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Process AnalyticsIsolation Amplifiers Transmitters Indicators Process Analytics Portable Meters Laboratory Meters

Product catalog

Sensors

Fittings

Table of Contents

Introduction Sensors Range .............................................................4 Fittings Range ..............................................................6 Process Analyzers Range ..............................................8 Intro ..........................................................................10 Perfection as Standard ...............................................12 Excursus.....................................................................14 Contactless. Digital. MEMOSENS. ............................20 Compact. Modular. Low-maintenance. ......................26 Illuminated. Colored. Flexible. ....................................32 Sensors Sensor Overview ........................................................36 Sensors for pH Measurement............................38 SE 531 pH Sensor ......................................................40 SE 532 pH Sensor ......................................................42 SE 532 Memosens pH Sensor ...................................44 SE 533 pH Sensor ......................................................46 SE 533 Memosens pH Sensor ...................................48 SE 551 pH Sensor ......................................................50 SE 551 Memosens pH Sensor ...................................52 SE 552 pH Sensor ......................................................54 SE 552 Memosens pH Sensor ...................................56 SE 553 pH Sensor ......................................................58 SE 554 Memosens pH Sensor ...................................60 SE 555 Memosens pH Sensor ...................................62 SE 559 Memosens pH Sensor ...................................64 SE 560 pH Sensor ......................................................66 SE 545 pH Sensor ......................................................70 SE 546 Memosens pH Sensor ...................................72 SE 535 ORP Sensor ....................................................74 Sensor Accessories: pH Measurement ........................76 Sensors for Conductivity Measurement .........78 SE 610 Conductivity Sensor........................................80 SE 604 Conductivity Sensor........................................82 PortaSim Cond A .....................................................86

PortaSim Cond B......................................................87 SE 604 Memosens Conductivity Sensor ....................88 SE 605H Memosens Conductivity Sensor..................92 SE 620 Conductivity Sensor........................................96 PortaSim Cond C .....................................................98 SE 630 Conductivity Sensor......................................100 SE 630 Memosens Conductivity Sensor ..................102 SE 600 Conductivity Sensor......................................104 SE 603 Conductivity Sensor......................................110 SE 660 Electrodeless Conductivity Sensor .................114 SE 670 Electrodeless Conductivity Sensor .................118 SE 655 Electrodeless Conductivity Sensor .................122 SE 656 Electrodeless Conductivity Sensor .................128 Sensor Accessories: Conductivity Measurement ........134 Sensors for Oxygen Measurement ................138 SE 703 Oxygen Sensor .............................................140 SE 706 Oxygen Sensor .............................................142 SE 706 Memosens Oxygen Sensor..........................144 SE 707 Oxygen Sensor .............................................148 SE 707 Memosens Oxygen Sensor..........................150 Sensor Accessories: Oxygen Measurement ...............154 Fittings and Controllers Overview of Fittings and Controllers.........................158 Immersion Fittings ............................................160 ARD 220 Immersion Fitting ......................................160 ARD 230 Immersion Fitting ......................................166 Flow-Through Fittings.......................................172 ARF 101 Flow-Through Fitting..................................172 ARF 200/ARF 202 Flow-Through Fitting....................174 ARF 201 Flow-Through Fitting..................................180 ARF 220 Flow-Through Fitting..................................184 ARF 215 Flow-Through Fitting..................................186 ARF 210 Flow-Through Fitting..................................192 ARF 240 Flow-Through Fitting..................................196 ARF 105 Flow-Through Fitting..................................200

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Isolation Amplifiers Transmitters

Laboratory Meters

Process Analytics

Portable Meters

Indicators

For up-to-date information, please visit www.knick.de

All dimensions in mm.

Inline Fittings......................................................202 ARI 106 (H) Inline Fitting ..........................................202 Accessories: Immersion/Flow-Through/Inline Fittings ..206 Retractable Fittings ...........................................208 WA 125 Retractable Fitting ......................................208 SensoGate Sensor Lock-Gates .......................210 SensoGate H (Hygienic) ..........................................220 SensoGate WA 130 ...............................................222 SensoGate WA 130 H ............................................230 SensoGate WA 131 ...............................................240 SensoGate WA 131 H ............................................248 SensoGate WA 131 M ...........................................256 SensoGate WA 131 MH .........................................262 Accessories: SensoGate Sensor Lock-Gates.............270 Ceramat Sensor Lock-Gate.............................276 Ceramat WA 150 ...................................................280 Ceramat WA 160 ...................................................288 Accessories: Ceramat .............................................298 Controllers ...........................................................306 Uniclean 900 .........................................................306 Unical 9000 ...........................................................318 Process Analysis Systems Device Overview ......................................................331 Overview of Process Analysis Systems .......................332 Protos 3400 (X) Process Analysis System.....334 Protos pH Modules ................................................362 Protos Conductivity Modules..................................374 Protos Oxygen Modules .........................................382 Protos Communication Modules ............................402 Protos ComFu 300 Wireless Set............................424 Stratos Pro Process Analyzers .......................434 Stratos Pro 4-Wire Devices .................................440 Stratos Pro A4 MSPH .............................................444 Stratos Pro A4 MSPH/MSPH ...................................448 Stratos Pro A4 MSPH/MSOXY ................................452

Stratos Pro A4 PH ..................................................458 Stratos Pro A4 MSCOND ........................................462 Stratos Pro A4 COND .............................................466 Stratos Pro A4 CC ..................................................470 Stratos Pro A4 MSCONDI .......................................474 Stratos Pro A4 CONDI ............................................478 Stratos Pro A4 MSOXY...........................................484 Stratos Pro A4 OXY................................................488 Stratos Pro 2-Wire Devices .................................494 Stratos Pro A2 MSPH .............................................498 Stratos Pro A2 PH ..................................................502 Stratos Pro A2 MSCOND ........................................506 Stratos Pro A2 COND .............................................510 Stratos Pro A2 CC ..................................................514 Stratos Pro A2 MSCONDI .......................................518 Stratos Pro A2 CONDI ............................................522 Stratos Pro A2 MSOXY...........................................526 Stratos Pro A2 OXY................................................530 Stratos Eco 2405 Process Analyzers.............538 Stratos Eco 2405 pH ..............................................542 Stratos Eco 2405 Cond ..........................................548 Stratos Eco 2405 CondI .........................................554 Stratos Eco 2405 Oxy .............................................560 Stratos PROFIBUS Analyzers ..........................568 Stratos PROFIBUS 2221 X pH .................................572 Stratos PROFIBUS 2221 X Cond .............................576 Stratos PROFIBUS 2222 X CondI.............................580 Stratos PROFIBUS 2221 X Oxy ................................584 Stratos FIELDBUS Analyzers ..........................588 Stratos FF 2231 X pH .............................................590 Stratos FF 2231 X Cond .........................................596 Stratos FF 2232 X CondI ........................................602 Stratos FF 2231 X Oxy ............................................608 Index Index .......................................................................616

3

Sensors

Fittings

Sensors Range

2 electrodes

4 electrodes

Parameters

Inductive

, , , , , , , , , , , , , , , , , , , , , ,

SE 531 SE 532 SE 533 SE 551 SE 552 SE 553 SE 560 SE 545 ISFET SE 532 Memosens SE 533 Memosens SE 551 Memosens SE 552 Memosens SE 554 Memosens SE 555 Memosens SE 559 Memosens SE 546 Memosens ISFET SE 604 SE 630 SE 610 SE 620

pH value

, , , , , Conductivity , , , , , , , , , , Oxygen

, ,

100 80 96 88 92 102 104 110 122 122 128 128 114 118 140 142 148 144 150

, , , , , , ,

, , ,

SE 604 Memosens SE 605H Memosens SE 630 Memosens SE 600 SE 603 SE 655 SE 655 X SE 656 SE 656 X SE 660 SE 670 (digital) SE 703

, , , , , ,

SE 706 SE 707 SE 706 Memosens SE 707 Memosens

4

Page 40 42 46 50 54 58 66 70 44 48 52 56 60 62 64 72 82

SE 703 SE 610 SE 532

SE 531

SE 706 SE 604 SE 532 Memosens

SE 706 Memosens SE 604 Memosens SE 533

SE 707

Sensors for pH Measurement

Sensors for Oxygen MeasurementSE 533 Memosens

SE 707 Memosens

SE 605 H Memosens

Sensors for Conductivity MeasurementSE 551

SE 620 SE 551 Memosens



SE 552 Memosens

SE 600

SE 553

SE 554 Memosens

SE 603 SE 555 Memosens SE 660 SE 559 MemosensIsolation Amplifiers Transmitters

SE 670

SE 560

Indicators


Process Analytics

Portable Meters

SE 656

SE 535

Laboratory Meters

5

Sensors

Fittings

Fittings Range

Automatic

Stainless Steel

Hygienic

Modular

Variant

Plastic

Immersion

, ,

, ,

, ,

ARD 220 ARD 230

160 166

, Flow-Through , , , , , , Inline , , , , , , ,

ARF 101 ARF 200/202 ARF 201 ARF 215 ARF 210 ARF 240 ARF 220 ARF 105 ARI 106 (H)

172 174 180 186 192 196 184 200 202

, Retractable Fittings , , , , , , , , , , , , , , , , , , , , , ,

, , , , , , , ,

WA 125 SensoGate WA 131 M SensoGate WA 131 MH SensoGate WA 131 SensoGate WA 131 H SensoGate WA 130 SensoGate WA 130 H Ceramat WA 150 Ceramat WA 160

208 256 262 240 248 222 230 280 288

6

Page

Immersion Fittings

WA 125 ARF 101

Retractable FittingsARF 200/202 ARD 220

Flow-Through Fittings

SensoGate WA 130 (H) ARF 201 ARD 230 ARF 220


SensoGate WA 131 (H) ARF 215

ARF 210

Inline Fitting

SensoGate WA 131 M(H)

ARF 240 ARI 106 (H)Isolation Amplifiers Transmitters

Ceramat WA 150

Indicators

Process Analytics

Portable Meters

Ceramat WA 160 ARF 105Laboratory Meters

7Sensors Fittings

Process Analyzers Range

Hazardous area Zone 1

Hazardous area Zone 2

BUS (PA/FF)

Parameters

Multiparameter

4-wire

2-wire

HART

, , , , , pH value , , , , , , , , , , , ,

, , , , , , , ,

, ,

, , , ,

, , , , , , , ,

Protos 3400 C Protos 3400 S Protos 3400 X C Protos 3400 X S Stratos Pro A2 PH Stratos Pro A2 MSPH Stratos Pro A4 PH Stratos Pro A4 MSPH Stratos Pro A4 MSPH/MSPH Stratos Pro A4 MSPH/MSOXY Stratos Eco 2405 pH Stratos PROFIBUS 2221 X pH Stratos FIELDBUS 2231 X pH

334 334 334 334 502 498 458 444 448 452 542 572 590 334 334 334 334 510 522 506 518 514 466 478 462 474 470 548 554 576 580 596 602 334 334 334 334 530 526 488 484 452 560 584 608

, , , , , , , ,

, ,

, , , , , , , , , , Conductivity , , , , , , , , , , , , , , , , Oxygen , , , , , , , , 8 , , , , , , , , , , , , , , , , , , , , , , , , , ,

, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Protos 3400 C Protos 3400 S Protos 3400 X C Protos 3400 X S Stratos Pro A2 COND Stratos Pro A2 CONDI Stratos Pro A2 MSCOND Stratos Pro A2 MSCONDI Stratos Pro A2 CC Stratos Pro A4 COND Stratos Pro A4 CONDI Stratos Pro A4 MSCOND Stratos Pro A4 MSCONDI Stratos Pro A4 CC Stratos Eco 2405 Cond Stratos Eco 2405 CondI

, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Stratos PROFIBUS 2221 X Cond Stratos PROFIBUS 2222 X CondI Stratos FIELDBUS 2231 X Cond Stratos FIELDBUS 2232 X CondI Protos 3400 C Protos 3400 S Protos 3400 X C Protos 3400 X S Stratos Pro A2 OXY Stratos Pro A2 MSOXY Stratos Pro A4 OXY Stratos Pro A4 MSOXY Stratos Pro A4 MSPH/MSOXY Stratos Eco 2405 Oxy Stratos PROFIBUS 2221 X Oxy Stratos FIELDBUS 2231 X Oxy

Page


Laboratory Meters

Process Analytics

Portable Meters

Indicators


Analyzers for pH Measurement

Protos 3400 (X) C

Protos 3400 (X) S

Stratos Pro A4 MSPH A4 MSPH/MSPH A4 MSPH/MSOXY A4 PH A2 MSPH A2 PH

Stratos Eco 2405 pH

Stratos PROFIBUS 2221 X pH

Stratos FIELDBUS 2231 X pH

Process Analyzers for Conductivity Measurement

Protos 3400 (X) C

Protos 3400 (X) S

Stratos Pro A4 MSCOND A4 COND A4 CC A4 MSCONDI A4 CONDI A2 MSCOND A2 COND A2 CC A2 MSCONDI A2 CONDI

Stratos Eco 2405 Cond 2405 CondI

Stratos PROFIBUS 2221 X Cond 2222 X CondI

Stratos FIELDBUS 2231 X Cond 2232 X CondI

Process Analyzers for Oxygen Measurement

Protos 3400 (X) C

Protos 3400 (X) S

Stratos Pro A4 MSOXY A4 OXY A4 MSPH/MSOXY A2 MSOXY A2 OXY

Stratos Eco 2405 Oxy

Stratos PROFIBUS 2221 X Oxy

Stratos FIELDBUS 2231 X Oxy

9

Sensors

Fittings

Intro

About UsYou have in your hands the first comprehensive catalog of process analytics from Knick. In producing this catalog, we are responding to a frequent request from our customers, and moving towards our goal of supporting you still more fully in addressing your measurement needs. This catalog is basically broken down into sensors, fittings, fitting controllers, and process analyzers. New digital and contactless sensors for pH, conductivity, and oxygen parameters to the Memosens standard, configured for various loadings and uses, are complemented by a broad selection of traditional analog sensors.

The fittings range has also been expanded; alongside established classics like Ceramat, SensoGate and SensoGate H (hygienic), Knick has added the manual SensoGate M retractable fitting family and the ARI 106 (H) modular static inline fitting.

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Laboratory Meters

Process Analytics

Portable Meters

Indicators


In addition to constantly expanding modular Protos process analysis system for the highest individual requirements, Knicks portfolio is completed by further new milestone products. On the one hand, these include the multitalents in the Stratos Pro series with 2- and 4-wire technology as well as Stratos Eco devices for all basic applications. As a turnkey supplier, Knick guarantees expert analysis of your measurement requirements and provides qualified advice for all points of measurement.

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Sensors

Fittings

Perfection as Standard

The CompanyFor over half a century, the name Knick has been a by-word for exceptional quality in the manufacture of electronic measuring devices. Back in 1945, company founder Dipl.-Ing Ulrich Knick began manufacturing highly accurate zero-pointstabilized DC amplifiers in Berlin, laying the foundation stone for the modules product range. These amplifiers made it possible to produce reliable and precise pH measuring devices whose zero point did not have to be readjusted every day. Thanks to integrated operational amplifiers, modern pH transmitters no longer have offset problems today. By contrast, electromagnetic interference of the measuring signal and the dynamic range of signal processing create new challenges, especially in low-power components. Knick analyzers are known for their reliability, stability, precision, and unique warranty services, all with optimal functionality. Completely new sensor monitoring functions such as information on the expected remaining sensor lifetime, new operating concepts with functional colored backlighting, and 2-wire fed, intrinsically safe transmitters with a previously unknown range of functions are just some examples of the latest process analytics. Knick is also the only supply of explosion-protected portable meters for pH, oxygen, and conductivity.

Alongside the process analytics business area, Knick develops and distributes a broad range of interface modules for industrial analog signal processing, transmitters for temperatures, and digital indicators for analog signals. Great emphasis is placed on functional safety and explosion protection, where the firm has made a name for itself with its high level of expertise.

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Laboratory Meters

Process Analytics

Portable Meters

Indicators


Traditionally Innovative Today, company policy still focuses on a high technical level and a highly innovative orientation. Every fourth employee works in Research and Development. A large number of patents and licensing agreements are the result. The strategy of achieving business success with optimal technical solutions for demanding tasks has proven itself beyond doubt and also promises stability and independence with solid growth in the future. The economic independence of the company allows for the far-sighted work of the development department focused on innovation and sustainability. Although this is necessary to create and manufacture products and systems of ever increasing complexity today, it can by no means be taken for granted. As the result of this exemplary commitment, Knick will continue to offer its customers products perfectly suited to their particular tasks and problems and safeguard investment security for many years.

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Sensors

Fittings

Excursus

The Point of MeasurementIn analytical measurement loops consisting of a sensor, fitting, and process analyzer (transmitter), the application is crucial to the choice of individual components. The measurement problem can rarely be reduced to the transmitter alone, but usually comes down to understanding the complete interplay between the individual elements of the point of measurement. By confronting the problems directly where they arise, Knick has been able to gain significant additional knowledge from the close interaction of customer know-how and the experience and expertise of its own employees. Some years ago, to complement Knicks more than sixty years of expert knowledge of circuit technology and pH electrodes, the company acquired the Hagen-based specialists Regnault, known for their ultrapure-water applications with steel fittings and conductivity sensors, and integrated its products within its own range. In its usual way, Knick began by addressing the most complicated applications with the greatest challenges, starting where existing fittings fail. This required a huge investment in terms of time and materials and resulted in the set-up of mechanical production centers of the highest standard.

Protos 3400 process analysis system

Controller Unical 9000/Uniclean 900

Service switch

Metering pumps with cleaning and calibration solutions

Sensor Lock-Gate SensoGate WA/ Ceramat WA

pH sensor14


Laboratory Meters

Process Analytics

Portable Meters

Indicators

Product Range

Process SensorsSensors as the direct interface to the process must be perfectly matched to the chemistry of the measured medium and to the prevailing pressure and temperature conditions. These essential requirements for error-free, low-maintenance, and reliable recording of process parameters are perfectly met by the new, upgraded range of Knick sensors. This serves a wide range of different applications: pH sensors with applicationspecific properties pH sensors from Knick are fitted with integrated temperature detectors. Modern contactless sensors are conected using the Memosens standard, analog sensors use the multi-pin Variopin (VP) cap connector. Most of the pH sensors offered by Knick are available not only in the standard length of 120 mm but also in 225 mm length for use in the Unical 9000 and Uniclean 900 automatic cleaning and calibration systems. Retractable fittings with ideal functionality for this purpose are Ceramat and SensoGate. Conductivity sensors for the complete measuring range The conductivity of aqueous media covers a range of more than eight decades, starting with ultrapure water with 0.055 S/cm and going as far as fully dissociated acids or bases with more than 1,000 mS/cm. The applications for conductivity measOxygen sensors with low maintenance effort Sensors from Knick for measuring dissolved oxygen are characterized by a high level of process safety. The robust design using durable materials and the modular structure of the sensors lead to a high level of reliability and low maintenance. As a module, the steel-mesh-reinforced, PTFEcoated membrane can be replaced quickly and easily, as can the electrode system with its complete inner body. The sensors offer a high resolution of 6 ppb. With a version for trace measurement, a value of 0.1 ppb can be achieved, while its insensitivity to high CO2 partial pressures also makes it outstandingly suited to the beverage industry.

urement vary accordingly: from checking the purity of feed water in power plants to measuring highly concentrated electrolyte solutions and concentrated sulfuric acid. Ideally, these very different requirements can only be fulfilled by different sensors, which are adapted to the application-specific conditions by means of special properties. Knick offers the whole range of sensor technologies for this: sensors that measure with two or four electrodes, or electrodeless on the inductive principle. All sensors are equipped with a temperature probe for automatic temperature compensation of the conductivity level.

15

Sensors

Fittings

Excursus

Process FittingsThere is a basic distinction between static fittings and retractable fittings. The static fittings are available as flow-through fittings, generally for by-pass or inline applications directly within the process flow, and as immersion fittings for measurements in basins, tanks, or channels. Retractable fittings better described from a functional point of view as sensor lock-gates can be used to remove and service a sensor under process conditions. This is done in either manual or pneumatic mode. This can be linked with an automatic cleaning and/or calibration function. Because of the variety of production conditions, the requirements for a fitting are as diverse as they are for a sensor. Pressure and temperature, the choice of materials and above all the type and symmetry of the installation and the desired functionality, are determined by the fitting. Electro-pneumatic controllers Ideally matched to the sensor lock-gates, the Unical 9000 and Uniclean 900 controllers provide for perfect fully automated interplay in a complete measuring station. Highly accurate measurements can then be taken, even under difficult process conditions such as high pressure, high temperatures, and high levels of impurities. When measuring in aggressive media or at high process temperatures, the sensor rests in the calibration chamber and is only briefly moved into the process for measurement. This method decisively increases the sensor life.

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Laboratory Meters

Process Analytics

Portable Meters

Indicators

Product Range

Process AnalyzersTogether with sensors and fittings from Knick, the following process analyzers and analysis systems form optimal measuring stations for all applications and needs. basic Stratos Eco series for simple industrial applications and system integrators universal power packs for all common measurement parameters advanced Stratos Pro series for challenging industrial applications also for hazardous locations complete family: power packs, 2-wire, 2-channel measurement, Fieldbus devices premium Protos 3400 modular process analysis system flexible measuring system for individual requirements, multichannel measurement asset management functionality with unbeatable variety modular hardware and software concept permits retrofitting at any time premium Protos measuring system advanced Stratos Pro Series Investment basic Stratos Eco Series

Performance

Fieldbus Connection With the Protos 3400 process analysis system, Unical 9000 and Uniclean 900 allow the systems to be integrated directly with PROFIBUS PA and Fieldbus FOUNDATION. Together with the new ProgaLog 3000 parameter setting and documentation tool, the system can be easily configured and documented offline on the PC.

17

Sensors

Fittings

Excursus

On the Subject of Hazardous ApplicationsFor more than 50 years, Knick has developed and produced hazardousarea equipment with the intrinsic safety type i protection preferred by the chemical industry. The product range of approved equipment includes standard-signal isolators, repeater power supplies and temperature transmitters as well as devices for liquid analysis, systems for fully automated process analysis and retractable fittings. The approvals are in line with IECEx standards, ATEX rules and, for North America, UL, FM, and CSA, as well as further regional standards. The intrinsic safety type of protection i is based on the limitation of voltages and currents or power outputs in order to reliably avoid explosive sparking or impermissible heating. The maximum permissible values were determined in comprehensive test series carried out by the German PTB and other institutes and were first specified in according standards. The European standards EN 60079, EN 61241, and EN 13463 currently serve as a basis for the development of explosion-protected equipment. The latest guidelines and regulations on the subject of explosion protection are always promptly implemented by Knick and continuously integrated into the development of equipment.

Explosion Protection Explosion protection has developed dynamically in recent years; this will continue in the future. A great deal of work in this respect has been and is being done by the International Electrotechnical Commission IEC, which also developed the series of standards IEC 60079 Electrical apparatus for explosive gas atmospheres and IEC 61241 Electrical apparatus for use in the presence of combustible dust, which now serve as the global basis of national standards. In Europe, the 94/9/EC directive requires comprehensive explosion protection for electrical and nonelectrical equipment. This requirement was carried out when the above IEC standards became EN standards further complemented by EN 13463 Non-electrical apparatus for use in hazardous locations. A range of changes have been added to the current bodies of standards; the following presents just a few examples of these: intrinsic safety i, introduction of type of protection ic in addition to ia, ib encapsulation m, division into types of protection ma, mb, mc introduction of Group III for dust atmospheres at risk of explosion, subdivided into IIIA, IIIB, IIIC introduction of information on EPL (Equipment Protection Level) Ga, Gb, Gc for gas and Da, Db, Dc for dust Directive 94/9/EC also requires that the latest technical level of knowledge, which is constantly changing, must be used promptly and as far as possible. The assumption here is that the latest standards also reflect the latest technology. Equipment must therefore be regularly adapted to the latest body of standards. The standards themselves are usually reviewed every 3 to 5 years. As every device is subject to several standards which naturally cannot all be superseded at the same time, the manufacturers must constantly work on revising their devices. This can mean that the identifier, the area of application, or the electrical data change. For this reason, users should check on every repeat order whether the relevant devices still meet their requirements. Protection of existing rights continues to apply for existing systems and devices used within them.

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Laboratory Meters

Process Analytics

Portable Meters

Indicators

Explosion Protection

Global Developments Explosion protection continues to develop not just within the European Union but also on a global scale. Standardization of norms is seen as a particularly relevant factor here, making approvals valid in many countries. The desired ideal condition is a single, globally applicable approval. A system like this does exist, building on the IEC norms, and is generally known as the IECEx system. Although many countries cooperate on this system, the IECEx approvals themselves are still only accepted by a few nations. However, in countries which do not recognize the IECEx approvals, national approvals on the basis of the IECEx approvals are possible. As a result, electrical equipment is increasingly first receiving an IECEx Certificate of Conformity (IECEx CoC) approval as per the IECEx standard. On the basis of this, approvals for the ATEX region, North America, Asia etc. are then carried out (IECEx CoC are available at www.iecex.com). The IECEx standards are established on a zone system which will become the norm throughout the world. The division system common in the U.S. and Canada will nevertheless remain in force for a while especially in the U.S., where new plants may still be built on this system. Both systems the zone and the division system have to date been used on a mutually exclusive basis in the U.S. and Canada; a mixture is not permissible.

Hazardous-area Quality Assurance Systems Quality assurance systems for hazardous areas are required by the various approval systems / offices for the development and/or manufacture of hazardous-area devices. Compliance with the relevant standards is checked in regular audits. For example, the audits for IECEx and ATEX take place every three years, with an interim audit after half this time in each case. FM, CSA, and UL audit the parent plant and production sites every three months.

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Sensors

Fittings

Contactless. Digital. MEMOSENS.

The Industry Standard for SensorsInductive connection for contactless energy and data transmission The inductive Memosens connector system offers contactless energy and data transmission between electrochemical sensors and process analyzers. The built-in intelligence allows sensor-related data close to the process to be saved and evaluated. In late 2008, the two companies Endress + Hauser and Knick agreed to work closely together in the development of and general cooperation on contactless and digital sensor technology. The result of this cooperation is Memosens (logo). A new generation with a greatly expanded range of functions is currently in the final stage of development. The new Memosens generation will display significantly enhanced predictive diagnostics, record sensor history, and reliably measure glass and reference impedances. Together with all common fieldbuses, Memosens can be used with all process control and asset management systems. In addition to digital pH measurement, Memosens technology is available for ORP, conductivity and oxygen parameters. As an open standard, Memosens is supported by many other manufacturers.

Advantages of Memosens at a Glance up to 40 % longer lifetime of sensors reduction in process downtimes with simple sensor replacement fewer calibration cycles thanks to longer sensor life more precise process management with exact calibration in the laboratory under reproducible conditions predictive maintenance as an integrated element of the sensor technology improved asset management

Intelligent pH Sensors With analog pH measuring points, humidity can cause faults and thus failure of the measuring point. Problems like these are effectively rectified by the contactless, inductive data transfer of Memosens technology. In outdoor areas, impurities20

in the plug connector present no measurement problems with digital Memosens pH sensors. Stresses on the pH sensor are logged and can be used for preventive maintenance. Memosens sensors can be precalibrated in the lab under optimal

conditions and then only need to be replaced on site. As a result, there is no need for calibration in dirty or dangerous conditions and measuring points which are difficult to access no longer present a problem.


Laboratory Meters

Process Analytics

Portable Meters

Indicators

New from Knick

Contacting Conductivity Sensors Memosens technology is also used for contacting conductivity sensors. The contactless and digital data transfer reduces the influence of cable capacitance, cable resistance, or contacts susceptible to corrosion. In addition, the fully galvanic decoupling of analyzer and sensor element simplifies wiring. Here, the corresponding transmitters in the Stratos Pro series or the Protos measuring systems complete the Memosens conductivity measuring point. Of course, the relevant measurement and process data, such as minimum and maximum conductivity value and the number of cleaning and sterilization cycles, are also stored in conductivity sensors with Memosens technology.

Oxygen Measurement Using Memosens oxygen sensors, the measured value is also digitized directly in the sensor and can be transmitted as an interference-free digital signal to the analyzer and processed further there. When a sensor is replaced, the last sensorspecific data are loaded onto the analyzer and operation promptly continues. The oxygen sensors can also be calibrated locally in the laboratory or workshop and then commissioned at short notice at the relevant installation point without further work. In addition to standard data such as sensor ID, various operating data are recorded and made available for asset management (number of calibrations, operating hours taking account of the different process conditions, SIP cycles, and electrolyte stress).

Patented Connector System The contactless Memosens system is characterized by a patented quick connector that enables easy opening/ closing without twisting the cable. www.memosens.de

21

Sensors

Fittings


Contactless Energy and Data Transfer The key element of the system is the signal processing carried out in the sensor cap using inductive, contactless data transfer and power supply.

Coupling element (inductive)

Coupling element (inductive)

Sensor pH/ORP controller/ ADC/ memory Sensor temperature

Power receiver and data modulator/ demodulator

Power transmitter and data modulator/ demodulator

Modem (RS 485) controller/ memory Primary electric supply

Data

Field

Energy

Elimination of Measurement Problems Memosens technology allows reliable measurement completely insensitive to ambient conditions such as humidity corrosion salt bridges poor contacts poor galvanic isolation cables that are unsuitable or too long The system can even be connected under water. The connector is metalfree. Perfect galvanic isolation enables disturbance-free data transfer, unaffected by ground potential. Connection of a solution ground or equipotential bonding (EB) is not required.

22


Laboratory Meters

Process Analytics

Portable Meters

Indicators

New from Knick

Time is Money Varying Workflows in the Use of Conventional and Memosens Sensors The following comparison illustrates the differences in workflow following an error message. The considerably less time required for maintaining the digital Memosens sensors on site reduces process downtimes. Together with the other benefits, such as the longer sensor lives, this results in quick amortization of the investment.

Workflow with use of conventional sensors

Workflow with use of Memosens sensors

Error message/ Maintenance request Take along cleaning solution Take along buffer solution 1 Take along new sensor, = Maintenance requirement

Error message/ Maintenance request Take along new sensor

, = Maintenance requirement

On Site: Replacement Cleaning Regeneration Calibration 1.) Register at control center 2.) Remove sensor 3.) Clean/calibrate or replace sensor 4.) Calibrate sensor with buffer 1 5.) Calibrate sensor with buffer 2 6.) Reinstall the sensor 7.) Enable measuring point 8.) Keep records

On Site: Replacement 1.) Register at control center 2.) Remove sensor 3.) Reinstall the sensor 4.) Enable measuring point

In the lab: Cleaning Regeneration Calibration Automatic record

On-site calibration mandatory

23

Sensors

Fittings


Overview of Knick Memosens Sensors

pH/ORP, SE 532 Memosens For standard applications with gel electrolyte and temperature detector, sterilizable, autoclavable and CIP compliant. Universal, lowmaintenance sensor for chemistry applications. , SE 533 Memosens For high pressure and heavily polluted media with solid polymer electrolyte, solution ground, and temperature detector. Reliable sensor for challenging chemical processes. , SE 551 Memosens Refillable liquid electrolyte sensor with long service life for special requirements and high-precision measurements. Elimination of typical junction problems. , SE 552 Memosens Low-maintenance and precise pH sensor with integrated temperature detector. CIP capable, steam sterilizable and autoclavable. For an extensive range of applications at moderate pressures. , SE 554 Memosens Low-maintenance sensor for demanding process application in the chemical industry. High accuracy, stability, rapidness and a long life cycle are achieved by the special design. , SE 555 Memosens Steam-sterilizable sensor providing high reliability and precision; enables a very fast and stable response and makes the sensor CIP- and SIP-capable, even in the harshest of environments. , SE 559 Memosens For uncomplicated measurement in ultrapure water, water, and analytical chemistry. The calibrated annular junction enables precise measurements in media of very low conductivity virtually without influence of flow.

SpecificationspH: 0 14 Temperature: 0 ... 80 C (135 C for sterilization) pH: 0 14 pH: 0 14 pH: 0 14 Temperature: 0 ... 100 C (135 C for sterilization) pH: 0 14 Temperature: 0 130 C pH: 0 14 Temperature: 0 135 C pH: 0 14 Temperature: 5 100 C Temperature: Temperature: 0 135 C 0 130 C (reduced service life above 110 C) Pressure: 1 to 6 bars Pressure: 1 to 6 bars Pressure: 16 bars Temperature detecTemperature detec- (25 C), 8 bars (130 C) tor: NTC 30 kohms Temperature detec- Sensor material: tor: NTC 30 kohms tor: NTC 30 kohms Sensor material: Highly alkali-resistant Highly alkali-resistant glass Reference system: Ag/AgCl with silver ion trap, gel electrolyte, acrylamide-free Junction: Ceramic (1 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6 Sensor material: Highly alkali-resistant glass glass Reference system: Ag/AgCl with silver ion Reference system: trap, gel electrolyte, Ag/AgCl, solid polymer, acrylamide-free incl. KCl, acrylamideElectrolyte: free Friscolyt-B ZU 0591 Junction: open hole junction (2 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6 Junction: Ceramic (2 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6

Pressure: Pressure: up to 4 bars up to 10 bars

Pressure: 1 to 10 bars Pressure: Temperature detec- up to 10 bars Temperature detector: NTC 30 kohms Sensor material: Low-impedance standard pH glass, fast response Reference system: Ag/AgCl, polymeric electrolyte Junction: Calibrated annular junction Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6

Temperature detec- Temperature detector: NTC 30 kohms tor: NTC 30 kohms tor: NTC 30 kohms Sensor material: Sensor material: Special pH glass for Sensor material: Highly alkali-resistant high temperatures (SIP) Low-impedance stanglass and high pH values dard pH glass, fast Reference system: response Reference system: Ag/AgCl, prepressurized liquid electrolyte with silver ion trap Junction: Ceramic (1 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6 Reference system: Ag/AgCl, polymeric electrolyte Junction: Hole (2 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6 Ag/AgCl, prepressurized liquid electrolyte with silver ion trap Junction: Ceramic (1 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6 Certificates: Cytotoxicity certificate

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Conductivity, SE 546 Memosens Break-resistant and glass-free pH sensor using ISFET technology. Broad range of applications; outstanding features for hygienic and sterile applications, food and pharmaceutical industry, biotechnology. , SE 604 Memosens Robust 2-electrode sensor. For precise and reliable measurement of low and very low conductivities, particularly in ultrapure water down to 200 S/cm. Coaxial stainlesssteel electrodes. , SE 605H Memosens Robust 2-electrode sensor. For precise and reliable measurement over a broad range of low and very low conductivities in hygienic applications, particularly in ultrapure water down to 200 S/cm with only one sensor model. , SE 630 Memosens Low-maintenance and precise 2-electrode sensor with integrated temperature detector. CIP capable, steam sterilizable and autoclavable. For an extensive range of applications at moderate pressures.

Oxygen, SE 706 Memosens Digital oxygen sensor in robust and hygienic stainless steel design. High accuracy and low detection limit. Simple and fast maintenance due to special membrane. , SE 707 Memosens Reliable measurement of oxygen traces also under sterile and hygienic conditions; signalstable and robust. Simple and costefficient sensor calibration in ambient air.

SpecificationspH: 0 14 Temperature 15 ... 110 C (hazardous areas), 135 C (safe areas) Pressure: 0 to 10 bars Temperature detector: NTC 30 kohms Sensor material: ISFET (ion-sensitive field-effect transistor) Reference system: Ag/AgCl, gel electrolyte Hygienic design: EHEDG-validated Process-wetted material: PEEK, EPDM, FDA-conforming Junction: Ceramic (1 x) Immersion depth: 120 mm/225 mm Explosion protection: II 1 G Ex ia IIC T3/T4/T6 Cell constant: 0.029/cm Range: 0.04 ... 200 S/cm Material: Cell and electrodes: 1.4571 stainless steel; Insulator: PVDF Cell constant: 0.029/cm Range: 0.04 ... 200 S/cm Material: Cell and electrodes: 1.4435 stainless steel; Insulator: PEEK Cell constant: 1/cm Range: 10 S/cm 20 mS/cm Material: Body: PES; electrodes: Special graphite

SpecificationsRange: pO2 < 1200 mbars Detection limit: 6 ppb Signal in ambient air: 50 110 nA Residual signal in O2-free medium: 0.1 % of signal in ambient air Dependency on flow: 5 % Permissible pressure range: 0.2 6 (12) bars absolute Temperature 0 80 C (5 135 C steam sterilizable/autoclavable) Range: pO2 < 1200 mbars Detection limit: 1 ppb Signal in ambient air: 290 500 nA Residual signal in O2-free medium: 0.1 % of signal in ambient air Dependency on flow: 5 % Permissible pressure range: 0.2 6 (12) bars absolute Temperature 0 80 C (5 121 C steam sterilizable/autoclavable)

Temperature probe protection: Gaskets: FKM (Viton) Temperature detec- Titanium Temperature detecTemperature detector: NTC 30 kohms tor: NTC 30 kohms tor: NTC 30 kohms Temperature Medium: Temperature: Temperature 20 135 C; Max. 135 C Medium: Environment: 20 120 C; Pressure: 25 80 C Environment: Max. 16 bars (20 C) 25 80 C Pressure: Process connection: max. 25 bars Pressure: G 1; (20 70 C); max. 25 bars max. 10 bars (135 C) Explosion (20 to 70 C); max. 10 bars (120 C) Process adaptation: protection: II 1 G Ex ia IIC T3/T4/T6 Process adaptation: See product line (p. 94) G 1; Explosion protection: Explosion II 1 G Ex ia IIC T3/T4/T6 protection: II 1 G Ex ia IIC T3/T4/T6

Explosion Explosion protection: protection: II 1 G Ex ia IIC T3/T4/T6 II 1 G Ex ia IIC T3/T4/T6 Certificates: EHEDG, Certificates: EHEDG, 3A, 3.1 (EN 10204) 3A, 3.1 (EN 10204)

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Compact. Modular. Low-maintenance.

A Quantum Leap in Technology: SensoGateThe unique modular system from Knick for innovative manual and pneumatic retractable fittings. Also ideal for hygienic applications. Manual versions, variants for use with simple commercial control units, or fully automated quality solutions the flexible sensor lock-gates in the SensoGate series offer a multitude of advantages and enable swift amortization through considerable time and cost savings. All SensoGate fittings are also available as EHEDG-certified hygienic versions and as versions for hazardous locations (marking: II 1 GD c II).

SensoGate for gel sensors

SensoGate for liquid-filled sensors

Design Innovations More than a dozen patent registrations speak for themselves with the SensoGate series of sensor lockgates, Knick succeeded in markedly improving the previously practiced principle of the push rod mechanism. The results are as pioneering as they are customer-friendly: over seventy percent time savings in initial installation and replacement of wearing parts compared to other devices. The benefits of genuine and unique modularity are seen here: for example, the immersion tube can be replaced in a single movement without removing the entire fitting. The drive unit with the immersion tube can be disconnected from the calibration chamber and the process adaptation by loosening a single coupling nut.

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Exemplary Modular Design The sophisticated design reduces stress on seals and ensures an increased service life. Divided calibration chambers enable especially easy replacement of the process seal. Complete modularity simplifies the installation and allows replacing different components such as the drive or the immersion tube without disassembling the unit. You can easily switch to other types of electrodes, other process adaptations or immersion depths. Virtually all maintenance work is easily done on the site. The sensor lock-gates, sophisticated down to the smallest detail, allow for cleaning and calibration of the sensor without interrupting the process. A quick exchange during the running process can be done without difficulty.

Sensor module

Multiplug

Bellows

Media connection SensoLock

Drive

Piston

Immersion tube

Conventional retractable fittings: deposits on unprotected limit position mechanism Calibration chamber rinse medium Calibration chamber process side Process adaptation27

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Quick Replacement All gaskets can be accessed and replaced quickly and easily thanks to the separability of the calibration chamber and the simple tools required. This is also helped by our special installation tools.

Complete replacement of all O-rings in just 30 seconds!

time 00:00

time 00:10

time 00:20

time 00:30

A Question of Material Today, conventional retractable fittings are available in the widest range of materials: PP, PEEK, PVC, PP, steel, Hastelloy, titanium etc. Plastics frequently provide advantages to resist chemical stresses, but these have been out-weighed to some extent by the disadvantages of the designs: They are thermally instable, tend to swell and therefore do not have enough dimensional stability. In particular, immersion tubes made of plastic are greatly limited in terms of their application, cannot move after swelling and often malfunction at an early stage.

Simple replacement in no time at all: PEEK, PVDF, PP, stainless steel, Hastelloy

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Processed Plastics By contrast, the plastic versions of the SensoGate are reinforced with carbon fiber. In addition to the chemical resistance of the reinforced PEEK, PVDF, or PP, the calibration chamber and the immersion tube retain their shape, even when exposed to higher temperatures. The immersion tubes made of carbonfiber-reinforced plastic are injectionmolded rather than cut so as to avoid tool marks. The advantage of this method is that all the fibers remain covered by the surface. Cutting such fiber-reinforced plastics on a lathe would expose fibers and the resulting surface would be too rough for the O-rings to slide over.

Attractive in Every Way The result of Knicks injection-molding is a straight pipe with a cohesive surface of excellent quality. The direct benefit for the customer is the minimal O-ring wear and the correspondingly long service life of the gaskets. At the same time these materials can also be used at a great cost advantage where until now serious chemical stress combined with high pressures and temperatures have required extremely expensive materials such as Hastelloy. In addition to the financial aspect, a further major advantage are the carbon fiber reinforced plastics used by Knick with thermal expansion characteristics similar to those of steel. There are thus no longer any pressure restrictions on the permissible temperature range, due to the division into pressurized components made of steel and process-wetted materials made of carbon-fiber-reinforced plastic. The pressure stability is the same at room temperature as it is at 120 C/140 C. Furthermore, the conductivity of plastic carbon-fiber-reinforced components especially suit the use of SensoGate in hazardous areas. The probe guard made of conductive plastic prevents the electrodes from building up electrostatic charge and, in turn, distorting the measurements.

Process Adaptation SensoGate retractable fittings can be adapted to various processes with a steel flange 1.4571 DN 32 to DN 100, dairy-pipe screw joint DN 50 to DN 100, ANSI 316 1 1/2; to 3; flange and Ingold sockets, or hygienic process connections. Other special adaptations such as for flow cells are possible.

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SensoGate HSafe Separation and Still Hygienic SensoGate H sensor lock-gates are the only EHEDG-certified retractable fittings on the market which combine hygiene and safe separation from the process. When sensor lock-gates are used in processes in the pharmaceutical and food industries, with their high hygienic requirements, further demands arise with regard to sterilizability. Unlike other conventional fittings on the market, not only the process side but also the calibration chamber has been EHEDG-certified in the SensoGate. This means that its suitability for unrestricted use in pharmaceutical and food applications has been attested. This also allows validation in FDA-regulated production processes.

Setting the Seal Previously, the combination of demands for a hygienic-compliant fitting and safe disconnection of the calibration chamber from the process was considered unfeasible. While nonhygienic process fittings frequently feature two or even three process seals for reasons of safety, this was previously not possible for hygienic lock-gates as the space between the seals cannot be rinsed and is therefore not hygienic. However, the consequences of the sealing principle are insufficient safety and a high level of wear to the seal. During movement of the lock-gate, the connection from the process to the inlet and outlet of the fitting is open; the risk of recontamination to the process is consequently high. In contrast to this, this presents no problems for the SensoGate. The new, patented lock-gate principle for the first time allowed us to create a hygienically certified retractable fitting safely cut off from the process during all movement.

Seal prevents contamination

Figure: left conventional hygienic fitting, right SensoGate WA 130H

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Best Cleaning Results The process-side O-ring gasket which fits flush and free of dead spots in the process adaptation can be rinsed by not only the process but also from the interior of the fitting. A special molding on the inner side ensures that the flow of rinse and sterilization medium is directed toward the interior of the gasket. This means that it is possible to clean the interior of the process connection and the exterior of the immersion tube all the way down to the process seal. Three high pressure nozzles arranged tangentially on the sensor ensure an optimal cleaning effect, triggering a cyclone circumflowing the sensor and stripping away impurities at high speed. The cleaning medium or hot steam for sterilization are supplied directly at the media connection, through an integrated check valve decoupled from the regular media connections of the multi-plug. This valve also has no dead spots and is easily accessible.

Circumferential gap

Sensor cleaning

Tangential cyclone nozzle

Extended Immersion Depths by Offsetting the Process Adaptation The hygience SensoGate variants also enable immersion depths not achievable with conventional hygienic fittings. As only the part of the immersion tube may be inserted into the process which was previously sterilized in the calibration chamber, immersion depths of more than 20 to 26 mm were formerly a problem. By contrast, immersion depths of 32 mm or 57 mm can be selected with SensoGate H fittings. As a result, 220 % of previously possible immersion depths is in future available for installation in flow cells and especially for installations in which every millimeter counts, e.g. in double walled tanks. This is achieved solely due to an adjustment of the process adaptation on the calibration chamber, while the rest of the structure remains the same. Once the sensor is inserted into the process, the immersion tube and calibration chamber can also be cleaned in this position down to the process seal and, where required, sterilized. For the first time, contamination from the rinsing chamber into the process while moving can be safely prevented with this solution, even after long measuring intervals. Retrofitting is also possible.

259

234

Figure: left: short, right: long immersion depth31

32.5

52

77

57.5

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lluminated. Colored. Flexible.

Stratos ProPioneering process analytics for pH, conductivity, and dissolved oxygen: 2-wire and 4-wire devices with unique color-guided user prompting on backlit widescreen display. Thanks to innovative enclosure technology, the process control devices in the Stratos series are ideally suited for use even under harsh conditions. They allow connection of all common analog sensors as well as digital ISM sensors and contactless digital sensors such as Memosens.

Intuitive Color System and Clear Display The Stratos series are currently the only process analyzers in their price and performance class to feature a widescreen LC display, whose highcontrast image with memorable and self-explanatory pictograms guide the user through the applications. To increase legibility, the text is not presented in jumping lines but as a scrolling ticker line. With the corresponding display backlighting, the user intuitively knows which operating mode the device is currently in.

Setting the Standard In normal measuring mode, the display is backlit white, displays in information mode appear in green, and the diagnostic menu is turquoise. HOLD mode, when the device is calibrating, for example, is signaled by an orange display. The display of this state is particularly important when the device is connected to a process control system and may not supply any invalid output values. Diagnostic messages such as required maintenance or sensor wear are shown in magenta. The operator is made aware of an alarm message by a bright red; if the display is flashing red, this indicates invalid input.

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White: Normal measuring mode

Red blinking: Alarm, errors

Orange: HOLD mode

Magenta: Maintenance request

Turquoise: Diagnostics

Green: Info texts

Safety in Operation In the Stratos Pro series, Knick has fully subjected design to the needs of safety. As investigations in real-world environments have shown that operator errors on analyzing devices lead to long downtimes, the developers set themselves the target of designing a device which can be operated intuitively and safely. This was achieved with color-coded operator guidance which signals the current operation status to the user with various color backlighting states on the display.

Shatter-Proof and Corrosion-Resistance Enclosure The extremely robust and corrosionresistant plastic enclosure of the Stratos Pro series is protected to IP67 and can be used even in harsh environments and in the process industry. The scratch-proof and UVresistant display window is made of hardened, 3-mm thick safety glass and is connected directly to the plastic enclosure during the molding process. The specially sealed elastomeric control keys are hardly protuding from the smooth front, making it insensitive to mechanical damage. All the devices electronics are completely encapsulated in the door module: there are no exposed PCBs.

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Illuminated. Colored. Flexible.

Sophisticated Design The large rear unit can be preinstalled separately and contains no electronics. It is fully available as a terminal compartment. A door contact switch records unauthorized opening of the enclosure and in such cases triggers an entry in the logbook a function absolutely necessary for audit trails as per 21 CFR Part 11 in pharmaceutical processes. The extremely low selfheating of the Stratos Pro not least ensures an extremely long service life.

International Approvals The intrinsically safe models are designed for operation in hazardous locations of Zone 1/Class 1 Division 1 (with sensor in Zone 0). Operation in hazardous locations from 20 C to +65 C is possible. The devices are designed for gas and dust explosion protection (G/D) and can naturally also be used outdoors (type 4 enclosure, UV resistant).

For Analog and Digital Sensors The innovative wiring technology of the Stratos Pro enables operation of all standard sensors. The device supports both conventional analog sensors as well as digital or contactless digital sensors of the new MEMOSENS standard.

Function Superiority From the wireless service interface to the complete HART communication system, the Stratos Pro series offers a wide range of reliable functions for 4- and 2-wire devices. The devices34

can be used in multidrop mode and are certified for the handheld and asset management systems of the leading manufacturers.

Unrivaled wiring technology ensures low self-heating and an extremely long service life.


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Stratos Pro 4-Wire DevicesFit For Global Use Thanks to VariPower Broad-Range Power Supply The 4-wire models from Stratos Pro are equipped with the VariPower broad-range power supply unit. This allows using the same device model with power supplies from 20 to 253 V AC/DC. Reliable operation is thereby guaranteed worldwide, even with fluctuating qualities of power supplies. 2 x RS 485 for 2-channel operation with contactless sensors 2-channel operation with Memosens sensors 4 relay contacts for alarm, limit values, maintenance request PID controller 2 parameter sets

Stratos Pro 2-Wire DevicesThe New Benchmark With Unique Range of Functions A number of outstanding technological properties make the Stratos Pro series the new benchmark for 2-wire analyzers. Colored screen backlighting has been implemented for the first time in this device class, with the lowest possible electrical power. In contrast to all 2-wire devices previously available on the world market, two digital inputs are available as well as an analog input plus a second output for another measured value. Full functionality with 2-wire supply RS 485 for operating contactless sensors Hazardous-area application from 20 C to +65 C 2 current outputs 2 digital inputs 1 analog input

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Sensor OverviewChem Energy Pharm Food Water

Overview of the Sensor RangeMeasured-value acquisition for every application

pH for every application virtually maintenance-free with polymeric electrolyte highly accurate with pressurizable liquid electrolyte glass electrode or ISFET sterilizable, autoclavable, CIP compliant integrated temperature detector operation in sensor lock-gates

pH/ORP Sensors

SE 532 Memosens

SE 533 Memosens

SE 551 Memosens

SE 552 Memosens

SE 554 Memosens

SE 555 Memosens

SE 559 Memosens

SE 546 Memosens< < < 100 C) linear 19.99 +19.9 %/K (reference temp. 25 C) 20.0 +200.0 C 20.0 +150.0 C 10.0 +130.0 C (4 +392 F) (4 +302 F) (14 266 F) : 700 700 mV

Adjustment range Resolution Measurement error1,2,3) Temperature compensation of process medium

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Specifications continuedOutput 1 Process variable*} Overrange*} Output filter*} Measurement error!} Start/end of scale*} Span allowed Output 2 Measured variable Overrange*} Output filter*} Measurement error!} Start/end of scale*} Span allowed Alarm contact 0/4 20 mA, max. 10 V, floating (galvanically connected to output 2) pH or mV value 22 mA in the case of error messages low-pass, filter time constant: 0 120 s < 0.3 % current value + 0.05 mA configurable within the measuring range for pH or mV pH 2.00 18.00/200 3000 mV 0/4 20 mA, max. 10 V, floating (galvanically connected to output 1) temperature 22 mA in case of temp error messages low-pass, filter time constant: 0 120 s < 0.3 % current value + 0.05 mA 20 200 C/4 +392 F 20 220 K (36 396 F) alarm relay contact, floating AC < 250 V / < 3 A / < 750 VA DC < 30 V / < 3 A / < 90 W N/C (fail-safe type) 10 s R1 relay contact, floating AC < 250 V / < 3 A / < 750 VA DC < 30 V / < 3 A / < 90 W N/C or N/O 0000 9999 s as desired within range 0.00 5.00 pH/0 500 mV clean relay contact AC < 250 V / < 3 A / < 750 VA DC < 30 V / < 3 A / < 90 W N/C or N/O 000.0 999.9 h (000.0 h = cleaning function switched off) 0000 1999 s

Contact response Alarm delay Limit contact

Contact response*} Delay*} Setpoints*} Hysteresis*} Cleaning contact

Contact response*} Rinsing interval*} Rinse duration*}

Process Analytics

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Process Analysis SystemsChem Energy Pharm Food Water

Stratos Eco 2405 pHSpecifications continuedDisplay Main display Secondary display Sensoface Mode indication Alarm indication Keypad Service functions Current source Device self-test Display test Last error Sensor monitor Data retention Protection against electric shock Power supply current specifiable for output 1 and 2 (00.00 22.00 mA) automatic memory test (RAM, FLASH, EEPROM) display of all segments display of last error occurred display of direct, uncorrected sensor signal parameters and calibration data > 10 years (EEPROM) protective separation of all low-voltage circuits against mains by double insulation to EN 61010-1 24 (15 %) 230 (+10 %) V AC/DC approx. 5 VA/2.5 W AC: 45 65 Hz overvoltage category II, Class II LC display, 7-segment with icons character height 17 mm, unit symbols 10 mm character height 10 mm, unit symbols 7 mm 3 status indicators (friendly, neutral, sad face) 4 mode indicators meas, cal, alarm, config further icons for configuration and messages red LED in case of alarm 5 keys: [cal] [conf] [?] [] [enter]

Nominal operating conditions Ambient temperature Transport/Storage temp Relative humidity EMC 20 +55 C 20 +70 C 10 95 %, not condensing EN 61326-1, EN 61326-2-3 emitted interference: Class B (residential area) immunity to interference: Industry FM CSA Class A: for mains > 60 V DC

Explosion protection

NI, Class I Div 2, Groups A, B, C & D T4, Ta = 55 C; Type 2 NI, Class I Zone 2, Group IIC T4, Ta = 55 C; Type 2 Class I Div 2, Groups A, B, C and D, T4 Ex nA IIC T4

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Specifications continuedEnclosure Color Assembly molded enclosure made from PBT (polybutylene terephtalate) bluish gray, RAL 7031 wall mounting pipe mounting ZU 0274, 40 60 mm, _ 30 45 mm panel mounting ZU 0275 cutout to DIN 43 700, sealed against panel H x W x D: 144 x 144 x 105 IP 65/NEMA 4X 3 knockouts for cable glands M20 x 1.5 2 knockouts for 1/2; NPT or rigid metallic conduit approx. 1 kg

Dimensions (mm) Ingress protection Cable glands Weight

*) user-defined 1) to IEC 746 Part 1, at nominal operating conditions 2) 1 count 3) plus sensor error

Process Analytics

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Stratos Eco 2405 CondConductivity Measurement Simultaneous display of conductivity/ resistance/salinity and temperature; large measurement symbols. Icons supply operating messages and signal unusual operating states. Mode indicators show the current operating mode. Suitable sensors: all common types of 2-electrode sensors all known types of 4-electrode sensors cell constant selectable from 0.005 to 20 cm! selectable temperature sensors Pt 100, Pt 1000, NTC 30 kohms, NTC 8.55 kohms

Recommended Installation Sets Flow SE 610 ARF 220

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Product LineStratos Eco 2405 Cond process analyzer for measuring conductivity using 2- and 4-electrode sensors

Order No. 2405 Cond

Mounting Accessories (see page 566)Pipe-mount kit Panel-mount kit Protective hood

Order No. ZU 0274 ZU 0275 ZU 0276

Connection Cond measurementPower supply

Control room/ station

20 253 V AC/DC mS, %, SAL, Sensocheck mA

0(4) 20 mA mS/cm

Pt 100 / Pt 1000 NTC 30 kohms NTC 8.5 kohms Balco 3 kohms

Stratos Eco 2405 CondmA Contacts Wash alarm Temperature Limit value

0(4) 20 mA Temp.

Water

Sensor cleaningPower supply

Alarm

Limit value

Terminal Assignments

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Stratos Eco 2405 CondSpecificationsConductivity input Effective ranges Ranges*} input for 2-electrode or 4-electrode sensors 0.2 S c 1000 mS c conductivity 0.000 9.999 S/cm 0.00 99.99 S/cm 0.0 999.9 S/cm 0 9999 S/cm 0.000 9.999 mS/cm 0.00 99.99 mS/cm 0.0 999.9 mS/cm 0.000 9.999 S/m 0.00 99.99 S/m 0.00 99.99 Mohms cm 0.00 9.99 % 0.0 45.0 (0 35 C) < 3 s (Sensocheck on)

resistivity concentration salinity Response (T90) Measurement error Concentration determination1,2,3

< 1 s (Sensocheck off) } < 1% meas. val. + 0.4 S c 1 2 3 4 5 NaCl HCl NaOH H2SO4 HNO3

0.00 9.99 % by wt 0.00 9.99 % by wt 0.00 9.99 % by wt 0.00 9.99 % by wt 0.00 9.99 % by wt

(0 100 C) (20 +50 C) (0 100 C) (17 +110 C) (17 +50 C)

Sensor standardization

input of cell constant with simultaneous display of conductivity and temperature input of conductivity of calibration solution with simultaneous display of cell constant and temperature product calibration temperature probe adjustment 0.0050 19.9999 cm! polarization detection and monitoring of cable capacitance provides information on the sensor condition (Sensocheck) direct display of measured values from sensor for validation (resistance/temperature) Pt 100 / Pt 1000 / NTC 30 kohms / NTC 8.55 kohms (Betatherm), 2-wire connection, adjustable Pt 100 / Pt 1000 NTC 30 kohms NTC 8.55 kohms 0.1 C/1 F 20.0 +200.0 C 20.0 +150.0 C 10.0 +130.0 C (4 +392 F) (4 +302 F) (14 266 F)

Permissible cell constant Sensocheck Sensoface Sensor monitor Temperature input*} Measuring range

Resolution Measurement error1,2,3

}

< 0.5 K (< 1 K bei Pt 100; < 1 K bei NTC > 100C) (OFF) (LIN) (NLF) (NaCl) (HCl) (NH3) without linear characteristic 00.00 19.99 %/K natural waters to EN 27888 ultrapure water with NaCl traces (0 120 C) ultrapure water with HCl traces (0 120 C) ultrapure water with NH3 traces (0 120 C)

Temperature compensation*} (ref. temperature 25 C)

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Specifications continuedOutput 1 Process variable*} Overrange*} Output filter*} Measurement error!} Start/end of scale*} Minimum span Output 2 Measured variable Overrange*} Output filter*} Measurement error!} Start/end of scale*} Span allowed Alarm contact Contact response Alarm delay*} Grenzwertkontakt Contact response*} Delay*} Setpoints*} Hysteresis*} Cleaning contact Contact response*} Rinsing interval*} Rinse duration*} 0/4 20 mA, max. 10 V, floating (galvanically connected to output 2) conductivity, resistivity, concentration, salinity 22 mA in the case of error messages low-pass, filter time constant 0 120 s < 0.3 % current value + 0.05 mA as desired within range 5 % of selected range 0/4 20 mA, max. 10 V, floating (galvanically connected to output 1) temperature 22 mA in case of temp error messages low-pass, filter time constant 0 120 s < 0.3 % current value + 0.05 mA 20 +300 C/4 +572 F 20 320 K/36 576 F relay contact, floating AC < 250 V / < 3 A / < 750 VA N/C (fail-safe type) 10 s relay contact, floating AC < 250 V / < 3 A / < 750 VA N/O or N/C 0000 9999 s as desired within range 0 50 % full scale clean relay contact AC < 250 V / < 3 A / < 750 VA N/C or N/O 000.0 999.9 h (000.0 h = cleaning function switched off) 0000 1999 s DC < 30 V / < 3 A / < 90 W DC < 30 V / < 3 A / < 90 W DC < 30 V / < 3 A / < 90 W

Process Analytics

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Stratos Eco 2405 CondSpecifications continuedDisplay Main display Secondary display Sensoface Mode indication Alarm indication Keypad Service functions Current source Device self-test Display test Last error Sensor monitor Data retention Protection against electric shock Power supply current specifiable for output 1 and 2 (00.00 22.00 mA) automatic memory test (RAM, FLASH, EEPROM) display of all segments display of last error occurred display of direct, uncorrected sensor signal (electrode) parameters and calibration data > 10 years (EEPROM) protective separation of all low-voltage circuits against mains by double insulation to EN 61010-1 24 (15 %) 230 (+10 %) V AC/DC approx. 5 VA/2.5 W AC: 45 65 Hz overvoltage category II, Class II LC display, 7-segment with icons character height 17 mm, unit symbols 10 mm character height 10 mm, unit symbols 7 mm 3 status indicators (friendly, neutral, sad face) 4 mode indicators meas, cal, alarm, config further icons for configuration and messages red LED in case of alarm 5 keys: [cal] [conf] [?] [] [enter]

Nominal operating conditions Ambient temperature Transport/Storage temperature Relative humidity EMC 20 +55 C 20 +70 C 10 95 %, not condensing EN 61326-1, EN 61326-2-3 emitted interference: Class B (residential area) immunity to interference: Industry FM CSA Class A: for mains > 60 V DC



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Specifications continuedEnclosure Color Assembly molded enclosure made from PBT (polybutylene terephtalate) bluish gray, RAL 7031 wall mounting pipe mounting ZU 0274, 40 60 mm, _ 30 45 mm panel mounting ZU 0275 cutout to DIN 43 700, sealed against panel H x W x D: 144 x 144 x 105 IP 65/NEMA 4X 3 knockouts for cable glands M20 x 1.5 2 knockouts for 1/2; NPT or rigid metallic conduit approx. 1 kg



Process Analytics

553

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Fittings


Stratos Eco 2405 CondIInductive Conductivity Measurement Simultaneous display of conductivity/ resistance/salinity and temperature; large measurement symbol. Icons supply operating messages and signal unusual operating states. Mode indicators show the current operating mode. Suitable sensors a wide variety of commercial European or US electrodeless sensors temperature sensors Pt 100, Pt 1000, NTC 100 kohms

Recommended Installation Sets Flow SE 660 ARF 215 Immersion SE 660 ARD 220

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Product LineStratos Eco 2405 CondI process analyzer for measuring conductivity using electrodeless sensors

Order No. 2405 CondI Order No. ZU 0274 ZU 0275 ZU 0276


Connection Cond measurementPower supply


20 253 V AC/DC mS, %, SAL, Sensocheck 0(4) 20 mA mA mS/cm

Stratos Eco 2405 CondImA Contacts Wash Alarm Temperature Water Limit value

0(4) 20 mA Temp.

Pt 100 / Pt 1000 NTC 100 kohms


Alarm

Limit value


Process Analytics

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Stratos Eco 2405 CondISpecificationsCond input Display ranges input for electrodeless conductivity sensors: SE 655, SE 656, SE 660 and others conductivity concentration salinity conductivity 0.000 1999 mS/cm 0.00 9.99 % by wt 0.0 45 (0 35 C) 0.000 9.999 mS/cm 0.00 99.99 mS/cm 0.0 999.9 mS/cm 0 1999 mS/cm 0.000 9.999 S/m 0.00 99.99 S/m 0.00 9.99 % 10.0 100.0 % 0.0 45.0 (0 35 C)

Ranges

concentration salinity Response time (T90) Measurement error1, 2, 3} Temperature compensation*} (reference temp 25 C) Concentration determination approx. 2 s 1% meas. val. + 0.005 mS (OFF) (LIN) (NLF) 1 2 3 4 5

without linear characteristic 00.00 19.99 %/K natural waters to EN 27888 (0 35C) NaCl HCl NaOH H2SO4 HNO3 0.00 9.99 % by wt (0 100 C) 0.00 9.99 % by wt (20 +50 C) 0.00 9.99 % by wt (0 100 C) 0.00 9.99 % by wt (17 +110 C) 0.00 9.99 % by wt (20 +50 C)

Sensor standardization

entry of cell factor with simultaneous display of conductivity and temperature entry of conductivity of calibration solution with simultaneous display of cell factor and temperature product calibration zero adjustment temperature probe adjustment 0.100 19.999 1.00 199.99 0.5 mS/cm primary coil and lines monitored for short circuit secondary coil and lines monitored for open circuit provides information on the sensor condition (evaluation of zero point, Sensocheck) sensor monitor for validation of sensor and complete measured-value processing (display: resistance/temperature) Pt 100 / Pt 1000 / NTC 100 kohms, 2-wire connection, adjustable Pt 100 / Pt 1000 NTC 100 kohms 0.1 C/1 F < 0.5 K (< 1 K for Pt 100; < 1 K for NTC > 100 C) 20.0 +200.0 C 20.0 +130.0 C (4 +392 F) (4 +266 F)

Permissible cell factor Permissible transfer ratio Permissible zero offset Sensocheck Sensoface Sensor monitor Temperature input*} Measuring range Resolution Measurement error1, 2, 3}

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Specifications continuedOutput 1 Process variable*} Overrange*} Output filter*} (attenuation) Measurement error!} Start/end of scale Minimum span Output 2 Measured variable Overrange*} Output filter*} (attenuation) Measurement error!} Start/end of scale*} Span allowed Alarm contact Contact response Alarm delay Limit contact Contact response*} Delay*} Setpoints*} Hysteresis*} Cleaning contact Contact response*} Rinsing interval*} Rinse duration*} 0/4 20 mA, max. 10 V, floating (galvanically connected to output 2) conductivity, concentration, or salinity 22 mA in the case of error messages low-pass, filter time constant 0 120 s < 0.3 % current value + 0.05 mA as desired within range 5 % of selected range 0/4 20 mA, max. 10 V, floating (galvanically connected to output 1) temperature 22 mA in the case of error messages low-pass, filter time constant 0 120 s < 0.3 % current value + 0.05 mA 20 +300 C/4 +572 F 20 320 K/36 576 F relay contact, floating AC < 250 V / < 3 A / < 750 VA N/C (fail-safe type) 10 s relay contact, floating AC < 250 V / < 3 A / < 750 VA N/C or N/O 0000 9999 s as desired within range 0 50 % full scale clean relay contact AC < 250 V / < 3 A / < 750 VA N/C or N/O 000.0 999.9 h (000.0 h = cleaning function switched off) 0000 1999 s DC < 30 V / < 3 A / < 90 W DC < 30 V / < 3 A / < 90 W DC < 30 V / < 3 A / < 90 W

Process Analytics

557

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Fittings


Stratos Eco 2405 CondISpecifications continuedDisplay Main display Secondary display Sensoface Mode indication Alarm indication Keypad Service functions Current source Device self-test Display test Last error Sensor monitor Data retention Protection against electric shock Power supply current specifiable for output 1 and 2 (00.00 22.00 mA) automatic memory test (RAM, FLASH, EEPROM) display of all segments display of last error occurred display of direct, uncorrected sensor signal (electrode) parameters and calibration data > 10 years (EEPROM) protective separation of all low-voltage circuits against mains by double insulation to EN 61010-1 24 (15 %) 230 (+10 %) V AC/DC approx. 5 VA/2.5 W AC: 45 65 Hz overvoltage category II, Class II LC display, 7-segment with icons character height 17 mm, unit symbols 10 mm character height 10 mm, unit symbols 7 mm 3 status indicators (friendly, neutral, sad face) 4 mode indicators meas, cal, alarm, config further icons for configuration and messages red LED in case of alarm 5 keys: [cal] [conf] [?] [] [enter]

Nominal operating conditions Ambient temperature Transport/Storage temp Relative humidity EMC 20 +55 C 20 +70 C 10 95 %, not condensing EN 61326-1, EN 61326-2-3 emitted interference: Class B (residential area) immunity to interference: Industry FM CSA Class A: for mains > 60 V DC



558


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Portable Meters

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Specifications continuedEnclosure Color Assembly molded enclosure made from PBT (polybutylene terephtalate) bluish gray, RAL 7031 wall mounting pipe mounting ZU 0274, 40 60 mm, _ 30 45 mm panel mounting ZU 0275 cutout to DIN 43 700, sealed against panel H x W x D 144 x 144 x 105 IP 65/NEMA 4X 3 knockouts for cable glands M20 x 1.5 2 knockouts for 1/2; NPT or rigid metallic conduit approx. 1 kg



Process Analytics

559

Sensors

Fittings


Stratos Eco 2405 OxyDissolved-Oxygen Measurement Simultaneous display of measured value and temperature; unit symbols shown in plain text. Icons supply operating messages and signal unusual operating states. Mode indicators show the current operating mode. Suitable sensors customary amperometric sensors with (e.g. 675 mV) or without polarization voltage temperature sensors NTC 22 kohms, NTC 30 kohms

Recommended Installation Sets Flow SE 703 ARF 201 ZU 0323 Inline SE 703 ARF 101 Immersion SE 703 ARD 230

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Product LineStratos Eco 2405 Oxy process analyzer for measuring dissolved oxygen

Order No. 2405 Oxy


Order No. ZU 0274 ZU 0275 ZU 0276

Connection DO measurementPower supply


O2 sensor %, mg/l

20 253 V AC/DC 0(4) 20 mA mA pH/mV

Stratos Eco 2405 OxymA Alarm contact Temperature Water Limit value

0(4) 20 mA Temp.


Alarm

Limit value


Process Analytics

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Stratos Eco 2405 OxySpecificationsO2 input Measuring current Resolution (at Vpol 800 mV and Vref 200 mV) Saturation (10 +80 C) Measurement error1, 2, 3} Concentration (10 +80 C) Measurement error1, 2, 3} Permissible guard current Polarization voltage*} Process pressure*} Salinity correction*} Sensor standardization Operating modes Calibration range O2 saturation (automatic) O2 concentration (automatic) product calibration, zero calibration zero slope Calibration timer*} Pressure correction*} Sensocheck Sensoface Temperature input*} Measuring range Adjustment range Resolution Measurement error1, 2, 3} 2 nA 25 130 nA (at 25 C, 1013 mbars) 2 +1800 nA 0.05 nA 0 200% 0.5 % meas.val. + 0.5 % 0.00 20.00 mg/l 0.00 20.00 ppm 0.5 % meas.val. + 0.05 mg/l (0.05 ppm) 20 A 0 1000 mV 1000 0 mV

0.000 9.999 bars ( 999.9 kPa / 145.0 PSI) 00.00 45.00 g/kg

0000 9.999 h 0.000 9.999 bars / 999.9 kPa / 145.0 PSI monitoring for short circuits / open circuits (can be disabled) provides information on the sensor condition (evaluation of zero/slope, response time, calibration interval, Sensocheck) NTC 22 kohms/NTC 30 kohms, 2-wire connection, adjustable 20.0 +150.0 C/4 +302 F 10 K 0.1 C/1 F < 0.5 K (< 1 K at > 100 C)

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Specifications continuedOutput 1 Measured variable*} Overrange*} Output filter*} Measurement error!} Start/end of scale Span allowed Output 2 Measured variable Overrange*} Output filter*} Measurement error!} Start/end of scale Span allowed Alarm contact Contact ratings Contact response Response delay Limit contact Contact response*} Delay*} Setpoints*} Hysteresis*} Cleaning contact Contact response*} Rinsing interval*} Rinse duration*} 0/4 20 mA, max. 10 V, floating (galvanically connected to output 2) O2 saturation/O2 concentration 22 mA in the case of error messages low-pass, filter time constant 0 120 s < 0.3 % current value + 0.05 mA as desired within range 5 200 %/0.5 50 mg/l (ppm) 0/4 20 mA, max. 10 V, floating (galvanically connected to output 1) temperature 22 mA in case of temp error messages low-pass, filter time constant 0 120 s < 0.3 % current value + 0.05 mA 20 +150 C / 4 +302 F 20 170 K / 36 306 F relay contact, floating AC < 250 V / < 3 A / < 750 VA N/C (fail-safe type) 10 s relay contact, floating AC < 250 V / < 3 A / < 750 VA N/C or N/O 0000 9999 s within selected range 0.00 5.00 pH / 0 500 mV clean relay contact AC < 250 V / < 3 A / < 750 VA N/C or N/O 000.0 999.9 h (000.0 h = cleaning function switched off) 0000 1999 s 563 DC < 30 V / < 3 A / < 90 W

DC < 30 V / < 3 A / < 90 W

DC < 30 V / < 3 A / < 90 W

Process Analytics

Sensors

Fittings


Stratos Eco 2405 OxySpecifications continuedDisplay Main display Secondary display Sensoface Mode indication Alarm indication Keypad Service functions Current source Device self-test Display test Last error Sensor monitor Data retention Protection against electric shock Power supply current specifiable for output 1 and 2 (00.00 22.00 mA) automatic memory test (RAM, FLASH, EEPROM) display of all segments display of last error occurred display of direct, uncorrected sensor signal (electrode) parameters and calibration data > 10 years (EEPROM) protective separation of all low-voltage circuits against mains by double insulation to EN 61010-1 24 (15 %) 230 (+10 %) V AC/DC approx. 5 VA/2.5 W AC: 45 65 Hz overvoltage category II, Class II LC display, 7-segment with icons character height 17 mm, unit symbols 10 mm character height 10 mm, unit symbols 7 mm 3 status indicators (friendly, neutral, sad face) 4 mode indicators meas, cal, alarm, config further icons for configuration and messages red LED in case of alarm 5 keys: [cal] [conf] [?] [] [enter]

Nominal operating conditions Ambient temperature Transport/Storage temp Relative humidity EMC 20 +55 C 20 +70 C 10 95 %, not condensing EN 61326-1, EN 61326-2-3 emitted interference: Class B (residential area) immunity to interference: Industry FM CSA

Class A: for mains > 60 V DC



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Laboratory Meters

Portable Meters

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Date post:	23-Nov-2014
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