SIMPLE HANDLING

NO NEED FOR INSTALLATION

Digital Pressure Indicator DPI

Cylinder Pressure MonitoringThe Digital Pressure Indicator DPI measures dynamic pressures. It is especially designed to analyze large two and four stroke Diesel engines.

2 Digital Pressure Indicator DPI

Hand-held data acquisition unit

Operating keys

ON/OFF switch

ABS resin case

LC display with background illumination, 4 x 20 alphanumeric characters for displaying the measuring data and menu texts

4-pin connector for pressure sensor

LEDs for indication ofbattery status andmeasurement activity

Features

• No need to install TDC sensors on the engine for power calculation

• Easy handling and Plug’n’Play installation of the soft- and hardware results in less user related problems

• Excellent price-performance ratio • No copy limitations of the software • Usage of standard AA rechargeable batteries

(can easily be replaced by the user) • Continuous operation of more than 6 hours • High accuracy • Usage of a high quality sensor

Description

The electronic pressure indicator DPI, also known as Pressure Measuring Instrument (PMI System), is designed to measure dynamic cylinder pressures of large two- and four-stroke Diesel and gas engines.

It is a state-of-the-art MIP-system with a very convin-cing price-performance ratio. The high accuracy data collected by the DPI is essential for optimizing engines’ performance and reducing emissions. The self-explanatory handling of the Leutert PMI allows even unexperienced operators to take successful measurements in few minutes.

The following values can be monitored by using the DPI:

• Power/MIP calculation• P-Max• PV-plot• P-comp• DP (Derivative plot)• RPM

The included software allows evaluation transmitting (to superintendency), archiving, and much more with only a few clicks. Besides, the software offers the possibility for easy data sharing by e-mail, by simply pressing only one button.

The DPI is the most straightforward solution to reach optimum performance of your engine.

Measuring process

The pressure sensor is temporarily connected to the indicator valve (Thompson connection). Once the measuring series is being recorded, the some basic data can be read off the LC display of the hand-held unit. Afterwards, the data sets are saved to the internal memory and can be immediately transferred to any computer via USB “Plug’n’Play” connection for further evaluation/reporting.

Hand-held data acquisition unit

The battery powered hand-held unit is designed for a periodic monitoring of cylinder pressure, and provides important data for engine diagnostics and condition monitoring directly at the point of use.

The electronic components of the portable DPI hand-held are incorporated in a tough ABS resin (plastic) water resistant body. The figure below shows the hand-held data acquisition unit.

Digital Pressure Indicator DPI 3

Pressure sensor

The heart of the instrument is the pressure sensor. Using the latest technology its accuracy and lifetime are setting the standard. The type of quartz sensor used for the DPI has passed trials of 16,000 hours non-stop operation and is accepted world wide by all engine manufacturers. Furthermore the sensor has a calibration interval of approx. 8,000 hours.

The DPI system includes the pressure sensor displayed in the figure above which serves to determine the cylinder pressure in diesel and gas engines. It is characterized by a high level of precision and rugged design. The pressure sensor is connected to the DPI

hand-held by an armoured cable and plug.

Pressure sensor

Analyzing software

The simple, self-explanatory, and sophisticated software is saved on the internal memory of each handheld unit and has no copy limitations. This means that it is not necessary to purchase a second or even more licences for the computer(s) in the Engine Control Room and/or superintendents’ office.

Once you connect the handheld unit to the computer by USB “Plug’n’Play”, the software will automatically recognize the new measuring files for importing to the software. There is no need to install any drivers. After the new files have been imported there are different visualization modes available (pressure plot, pv plot, bar graphs, summarizing data info) which allow easy evaluation of the measuring data. The imported data can easily being exported and send by email for evaluation or storage by just one click. Future firmware and software updates are free of charge and can be done by the operator by simply copying one file.

Screenshots of the DPI software

4 Digital Pressure Indicator DPI

MADEIN

GERMANYSubject to change without notice. Issued 11/2016

Technical specifications

Pressure range : 0 to 250 barEngine range : 50 to 5,000 rpmAccuracy : < 0.5%A/D sampling precision : 16 bit (0.0092 bar/sample)Memory capacity : 50 engines, 24 cylinders each Battery type : Standard AA (4 pcs.), rechargeableBattery capacity : > 6 hrsBattery charging : via USB or adapter

Display : 20 x 4 alphanumeric characters backlight, high contrast

Standard connection : W 27 x 1/10”

Operating temperature range Hand-held unit : 0 to 55 °C Pressure sensor : 0 to 350 °C

Dimensions Hand-held unit : 211 x 100 (81) x 45 (26) mm Pressure sensor : Ø = 60 mm , L = 210 mm Weight Hand-held unit : 380 g Pressure sensor : 830 g

1) Less accurate than using calculation with CAE sensor2) After manual TDC correction in the software3) Using Planimeter with manual calculation, and engines fitted

with an indicator drum drive4) Choose correct indicator type according to RPM range

Indicator / Features DPI DPI-2 Type 50 MSI-3

Automatic power/MIP calculation with CAE

– 2 – –

Software based power/MIP calculation without CAE 1) 2 2) 2 2) 2 3) –

Analyzing Software 2 2 – –

Electronic data transfer and sharing 2 2 – –

P-Max 2 2 2 2

PV-Plot 2 2 2 –

P-comp 2 2 2 –

DP (Derivative plot) 2 2 – –

RPM 2 2 – –

Suitable for 2- and 4-stroke engines 2 2 2 4) 2

Manual available in English, Russian, Mandarin, and Spanish

DPI protective cover (optional)

Peak Pressure Indicator MSI-3

Cylinder Pressure MonitoringThe MSI-3 peak pressure engine indicator is designed for displaying the maximum value of gas pressures which are subject to constant and rapid variations. The device is particularly suitable for applicational tasks on Diesel engines.

2 Peak Pressure Indicator MSI-3

MADEIN

GERMANYSubject to change without notice. Issued 06/2015

Description

The MSI-3 peak pressure engine indicator is designed for displaying the maximum value of gas pressures which are subject to constant and rapid variations. The device is particularly suitable for applicational tasks on Diesel engines.

MSI-3 complete in wooden box

Technical specifications

Measuring ranges : 0 – 160 bar, 0 – 250 barError margin : ± 1.6 %Engine range : up to n = 2,500 rpmDimensions : 210 mm x 155 mm x 60 mmWeight : 1.8 kg without wooden box 3.0 kg with wooden boxStandard connection : W 27 x 1/10”

Features

• Measuring range up to 250 bar• Easy handling• High accuracy in all speed ranges• Extremely robust, low maintenance• Insensitive to vibration• Steel-manometer in safety construction• Light-weight

Standard accessories

1 wooden box with handle and two hinges1 hollow spanner - connecting nut1 test protocol1 operating instructions

Torque Measuring System TORXmeter

Shaft Power MeasurementThe Leutert Torque Measuring System TORXmeter is a system for continuous shaft power measurements and provides vital data for efficiency improvement and prevention of downtime.

EASY INSTALLATION, OPERATION & CALIBRATION

ROBUST DESIGN & OUTSTANDING DURABILITY

2 Torque Measuring System TORXmeter

Description

The TORXmeter is a permanent shaft power measuring system basically designed for seagoing vessels, but may be used also for other engine-driven applications. The provided data is vital for evaluating engine performance in relation to the power consumption (burning of fuel), thus helps to improve engine efficiency and to reduce fuel costs.

The TORXmeter is easy to install and requires no electronic/electric parts on the shaft. Only two magnetic sensor belts in a distance of 1.5 to 2 m have to be installed on the shaft and works contact free. This makes the system rugged and more durable than other comparable systems.

The simple installation and calibration makes presence of a service technician unnecessary and is usually done by the vessel’s crew.

The intuitive interface of the terminal box allows easy operation, permanent display, and automatic reports of following values:

• Torque (kNm)• Shaft power (kWh)• Shaft speed (RPM)

Data transmission to vessel’s automation system can be easily done via 4-20mA outputs.

Installation of several repeater displays (engine control room, bridge) is possible.

Screen Displays of the Terminal Box

The complete setup can be done at the terminal box. The touch-screen of the terminal box can be operated intuitively and offers various information at a glance.

Measurement screen

Daily report

Propeller curve

Torque Measuring System TORXmeter 3

4

1

3

2

6

3

4

5

TORXmeter overview (Scope of supply)

1) Terminal box, wall or console mounted version2) MWE box3) 2 sets of bracket and holders for EXFR sensors4) 2 pcs. EXFR sensors, depending on shaft diameter5) 2 pcs. sensor belts, depending on shaft diameter6) Pre-wired cable between MWE box and EXFR

sensors (approx. 3.7 m)

Installation Examples

4 Torque Measuring System TORXmeter

Subject to change without notice. Issued 11/2016MADE

INGERMANY

Technical specifications

Power supply : 100/240 VAC, 50/60Hz, 16 A

Temperature range : Terminal box and MWE box 0 to 60°C EXFR sensors and belts -40 to 85°C

Shaft diameter : 250 to 1,000 mm; < 250 mm on request

Sensor measuring accuracy : < 0.1 % FS

Speed range : up to 250 rpm; > 250 rpm on request

Torque/RPM measurement : high-resolution sensor, contact-free

Performance data output : 3 x 4 to 20 mA signals for torque, shaft power, shaft speed

Interface : RS485 (NMEA 183)

Alarm outputs : Engine overload, system error (potential free contacts)

Protection class : Terminal box and MWE box IP54 EXFR sensors and belts IP67

Firmware update : via USB stick (update file can be sent via e-mail)

Display : Illuminated touch screen

Optional equipment : Repeater display for ECR or bridge installation

Deflection Indicator

Crankshaft AlignmentThe Leutert Deflection Indicator allows easy and fast measurement of crankshaft deflection and cylinder liner ovality.

2 Deflection Indicator

Deflection Measurement

Most engineers are familiar with the importance of regular checks on Diesel engine crankshafts and cylinder liner. The old dial gauge for crankshaft alignment checks were time-consuming, unpleasant, dirty and gave uncertain accuracy. By using Leutert’s electronic Deflection Indicator DI-5 series the task will be much easier and the accuracy will be improved. As an option to the instrument you can connect the ovality kit to check the cylinder liner ovality and wear comparison.

The Deflection Indicator DI-5 series has been used by large numbers of engineers in over 90 countries worldwide. Our customers are Diesel engine manufacturers who equip their engines with an instrument for the service program, service companies and ship-ping companies.

Features

• A pleasant and clean operation comparing to use the old dial gauge.

• Download measurements to your computer to store, track, print and compare your engine wear.

• Measure deflections at the extreme precision of 0.001 mm

• Rechargeable battery operated for portable use • Large measuring distance 60 to 574 mm (with

different kind of transducers). • USB connection to PC

Crankshaft Measurement

Four push buttons on the DI-5C panel are used to select, change and accept values on the display such as temperature, engine number, number of cylinders, measurement direction and so on. Just push the OK button to store the value.

On completion of the first cylinder, move the transducer to the next cylinder and store measurement values. The generous measurement range allows the transducer to be moved between cylinders without mechanical adjustment. When all cylinders are completed hard copy can be downloaded to a PC for reference and future comparisons.

Deflection Indicator 3

Ovality Kit

The ovality kit is designed principally to measure cylinder liner wear and ovality. However, the device can be modified to take measurements from various applications according to your own requirements. The standard kit contains equipment to measure cylinder liners with diameters of 180 to 600 mm.

The supplied software with the deflection indicator DI-5C also handles the measurements taken with the ovality kit. By this, you can transfer ovality data to your PC and evaluate and compare, all with graphs and printouts.

Analyzing Software

The DI-5C will download your measured data to a PC using standard USB interface. The software is compatible with Windows up to version Windows 8, 32/64 bit.

Connecting cable, user information and program disc are supplied with the instrument.

4 Deflection Indicator

Subject to change without notice. Issued 06/2015

Technical specifications

Storage & transfer to PC : DI-5 no; DI-5C yes

Measuring distance : 89 to 565 mm (a smaller transducer is optional equipment)Measuring range : ± 2,048 mmResolution : 0.001 mmZero balance range : ± 2,048 mmZero drift : 0.001 mm / 5 minutes

Instrument operating range : 0°C to 55°C (32°F to 130°F)Transducer operating range 0°C to 80°C (32°F to 175°F)

Battery : 3.6 V Lithium Ion, rechargeableBattery life : 10 hours / charge, shelf life 5 years

Extension bars (invar alloy) : 10, 20, 40, 80 and 2 x 160 mmCable length : 7 mGross weight : 4 kg

Dimensions Instrument : 190 mm x 167 mm x 50 mm Transducer : Ø 31 mm x 81 mm Case : 300 mm x 280 mm x 140 mm

Engine Indicator Type 50System Maihak

Cylinder Pressure MonitoringThe mechanical pressure indicator type 50 measures dynamic pressures. It is especially designed to analyze large two stroke Diesel engines.

2 Engine Indicator Type 50

MADEIN

GERMANYSubject to change without notice. Issued 08/2016

Technical specifications

Measuring range : see spring table belowEngine range : up to n = 300 rpm or max. dp/dt = 9 x 10³ bar/secMax. diagram : 50 mm/80 mm (height/length)Drum diameter : 50 mmPaper size : 180 mm x 65 mmDimensions : 165 mm x 130 mm x 90 mmWeight : 1.5 kg (without wooden box) 4.4 kg (with wooden box)Standard connection : W 27 x 1/10”

Description

Leutert engine indicators are used on diesel engines, gas engines, air compressors, pumps, etc. A metal stylus draws a clear pressure-path diagram which records the pressure curve within the engine cylinders as influenced by the piston stroke. The recording drum can be moved by means of a string, which is pulled manually or by the engine. If the drum is driven by the engine, the diagram may be planimetered.

Our indicators are designed to cover various ranges of speed and rates of pressure-change.

It will always be advisable to operate with small diagrams as far as possible, in consideration of the oscillating masses. In doubtful cases it is suggested to forward particulars of the operating conditions, and on orders to give particulars regarding kind of engine, pressures to be measured, engine stroke and r.p.m.

The selection of the correct indicator size depends not only on the r.p.m but also on the rate of pressure rise at time unit dp/dt. If the above stated limit values are exceeded, the resulting acceleration would cause too high an indication of pressure. Size of piston and spring are selected such that the maximum natural frequency is attained. With regard to the accelerations, for best results the diagram length should be progressively reduced as the r.p.m. approaches the designed maximum of the indicator.

Features

• Individually calibrated high accuracy heat treated springs

• Unchanged, rugged and proven reliable Maihak design

• Easy and simple operation by unskilled operator• Cheapest way to analyze your engine• Ready-to-use equipment

Standard accessories

1 wooden box, 1 spring, 1 measuring scale, 1 block indicator paper each 40 sheets, 1 cord tightening hook, 1 oil can for piston and links, 1 screw driver, 1 hollow spanner, 1 cylinder cleaner, 1 stand for instrument, 1 tube incl. 5 recording pencils, 1 operating instructions

Table of Indicator Springs Type 50

Piston Scale Max. Pressure Spring-No. Part-No.

1/10 0.35 mm/bar 140 bar 50 / 14 bar 4651.0.71.14000

1/10 0.30 mm/bar 160 bar 50 / 16 bar 4651.0.71.15000

1/10 0.25 mm/bar 200 bar 50 / 20 bar 4651.0.71.16000

1/10 0.20 mm/bar 250 bar 50 / 25 bar 4651.0.71.17000

1/10 0.15 mm/bar 300 bar 50 / 30 bar 4651.0.71.18000

Piston diameter 6.41 mmType 50 complete in wooden box

Indicator Valve

Cylinder Pressure MonitoringIndicator valves are used for the connection of mechanical engine indicators and digital pressure indicators with Diesel engines.

2 Indicator Valve

MADEIN

GERMANYSubject to change without notice. Issued 06/2015

Dimensions

1) Indicator valve compl. with handwheel

2) Indicator valve with hexagon nut SW 17

3) Option: Handwheel, single for hexagon nut SW17

Technical specifications

Max. working pressure : 300 barMax. working temp. : 600°CMax. spindel stroke : approx.2.5 mm = 2 turns of handwheelWeight : approx. 0.6 kg

Design

• steel housing 1.7225 heat treated• tensile strength over 1,000 N/mm²• valve cone stainless steel• handwheel design is user-friendly

The prestressed spring action of the axially movable valve cone ensures excellent sealing on hot and cold engines. On request the indicator valve can be supplied with a protective cap, corresponding to DIN 6273.

Connections

Connection - engine end (A)M 20M 20 x 1.51/2“ NPTR 1/2“R 3/4“3/4“ WHother dimensions on request

Connection - indicator endsuitable for all mechanical and digital engine indicators with standardized thread W 27 x 1/10”.

Engine Indicator Type 30System Maihak

Cylinder Pressure MonitoringThe mechanical pressure indicator type 30 measures dynamic pressures. It is especially designed to analyze large two and four stroke Diesel engines.

2 Engine Indicator Type 30

MADEIN

GERMANYSubject to change without notice. Issued 06/2015

Technical specifications

Measuring range : see spring table belowEngine range : up to n = 1,000 rpm or max. dp/dt = 18 x 10³ bar/secMax. diagram : 30 mm/60 mm (height/length)Drum diameter : 40 mmPaper size : 145 mm x 45 mmDimensions : 120 mm x 105 mm x 85 mmWeight : 1.1 kg without wooden box 4.0 kg with wooden boxStandard connection : W 27 x 1/10”

Description

Leutert engine indicators are used on diesel engines, gas engines, air compressors, pumps, etc. A metal stylus draws a clear pressure-path diagram which records the pressure curve within the engine cylinders as influenced by the piston stroke. The recording drum can be moved by means of a string, which is pulled manually or by the engine. If the drum is driven by the engine, the diagram may be planimetered.

Our indicators are designed to cover various ranges of speed and rates of pressure-change.

It will always be advisable to operate with small diagrams as far as possible, in consideration of the oscillating masses. In doubtful cases it is suggested to forward particulars of the operating conditions, and on orders to give particulars regarding kind of engine, pressures to be measured, engine stroke and r.p.m.

The selection of the correct indicator size depends not only on the r.p.m but also on the rate of pressure rise at time unit dp/dt. If the above stated limit values are exceeded, the resulting acceleration would cause too high an indication of pressure. Size of piston and spring are selected such that the maximum natural frequency is attained. With regard to the accelerations, for best results the diagram length should be progressively reduced as the r.p.m. approaches the designed maximum of the indicator.

Features

• Individually calibrated high accuracy heat treated springs

• Unchanged, rugged and proven reliable Maihak design

• Easy and simple operation by unskilled operator• Cheapest way to analyze your engine• Ready-to-use equipment

Standard accessories

1 wooden box, 1 spring, 1 measuring scale, 1 block indicator paper each 40 sheets, 1 cord tightening hook, 1 oil can for piston and links, 1 screw driver, 1 flat plier, 1 hollow spanner, 1 cylinder cleaner, 1 stand for instrument, 1 bundle indicator cord, 1 tube incl. 5 recording pencils, 1 vacuum washer, 1 operating instructions

Table of Indicator Springs Type 30

Piston Scale Max. Pressure Spring-No. Part-No.

1/5 0.20 mm/bar 150 bar 30 / 30 bar 4611.0.71.14000

1/5 0.16 mm/bar 200 bar 30 / 40 bar 4611.0.71.16000

1/5 0.12 mm/bar 250 bar 30 / 50 bar 4611.0.71.17000

Piston diameter 9.06 mmType 30 complete in wooden box

Digital Pressure Indicator DPI-2

Cylinder Pressure MonitoringThe Digital Pressure Indicator DPI-2 measures dynamic pressures. It is especially designed to analyze large two and for stroke Diesel and gas engines.

2 Digital Pressure Indicator DPI-2

4 operating keys

Aluminum body

LC display with background illumination, 4 x 16 characters for displaying the measuring data and menu texts

Connectors and charginglevel LED

LED for indication of the low charge of battery

Description

The Digital Pressure Indicator DPI-2 measures dynamic pressures. It is especially designed to analyze large two and four stroke Diesel and gas engines. The main application area is the marine market and mobile and stationary power stations.

The DPI-2 is a powerful and easy-to-use high quality electronic engine indicator which can be characterized by its long life components. It provides the following essential engine values for analysis:

• Indicated power• Mean indicated pressure (mip)• Peak pressure (Pmax)• Minimum peak pressure (Pmin)• Average peak pressure (Pav)• Standard deviation of peak pressure (Sdev)• PV-plot• Compression pressure (P-comp)• Maximum gradient of pressure curve (dp/da)• Speed (rpm)

The measuring method of the DPI-2 is fast and simple: The pressure sensor is temporarily connected to the indicator valve (connection W27 x 1/10”). While the measuring series is being recorded, the data can be read off the LC display. After that, the data sets are saved to memory and can be transferred to the PC. The data may be evaluated and administered with the DPI software.

The DPI system works independently of the mains voltage. It uses its own integrated power supply.

An optional TDC sensor (4-stroke engine) relates the pressure curve to the crankshaft position. By using the crank angle encoder or incremental encoder on a 2-stroke engine the pressure values are measured in relation to the actual crankshaft angle.

All systems can be supplied as permanent installation for vessels or as plug-in version for service engineers. The DPI-2 is delivered in a tough waterproof carrying case.

Hand-held Data Acquisition Unit

The electronic components of the portable DPI hand-held are incorporated in a tough aluminium water resistant body. The figure below shows the hand-held data acquisition unit.

Features

• Menu controlled operation• Sufficient memory to analyze up to 32 cylinders• Measurement and display of cylinder pressure in

individual cycles or in up to 16 cycles on average• Storage of motor and measurement parameters• Selection of various filters• High sensitivity through 12-bit A/D converter• Real time clock• Integrated rechargeable batteries• Interface for PC (RS 232, adapter for USB)

Hand-held data acquisition unit

Digital Pressure Indicator DPI-2 3

Pressure Sensor

The DPI system includes the pressure sensor which serves to determine the cylinder pressure in the engine. It is characterized by a high level of precision and rugged design. This type of quartz sensor has passed a trial of non-stop 16,000 hours and is accepted worldwide by all engine manufacturers.

TDC Sensor

The TDC sensor is used on 4-stroke engines to determine the exact position of top dead centre on the cylinders. This is necessary for an accurate power and MIP calculation.

CAE Sensor

The CAE sensor is used in combination with a TDC sensor on 2-stroke engines to measure the angular position of the crankshaft and the cylinders for accurate power and MIP calculation.

Incremental Encoder

The incremental encoder delivers up to 2,048 pulses to the electronics system, thereby enabling a very precise recording of the engine data, such as the position of the top dead centre, or of the crankshaft angle. Therefore, no additional TDC sensor and CAE sensor is required here.

Pressure sensor

TDC sensor

CAE sensor

Incremental encoder for RT-flex engines

Leutert alpha lubricator connection kit

For Wärstilä RT-flex EnginesThe incremental encoder is delivered to you with a complete assembly kit for mounting on Wärtsila RT-flex engines.

For MAN Alpha Lubricator SystemsThe use of the Leutert alpha lubricator connection kit is optional and suitable exclusively for engines equipped with an MAN alpha lubricator system. It en-ables the use of the incremental encoder already stan-dard installed with the MAN alpha lubricator without impairing its function.

4 Digital Pressure Indicator DPI-2

MADEIN

GERMANYSubject to change without notice. Issued 06/2015

Technical specifications

Pressure range : 0 – 250 bar

Standard connection : W27 x 1/10”

Speed range : 35 – 800 rpm for 2-stroke engines 120 – 1400 rpm for 4-stroke engines

Pressure resolution : 0.07 bar for pressure range 0 – 250 bar

Accuracy : < 0.5%

Memory capacity : 9 engines (32 data sets)

Battery capacity : 6 hrs

Battery charger Input : 100 – 240 V AC, 50 – 60 Hz

Operating temperature range Hand-held unit : 0 – 55 °C Pressure sensor : 0 – 350 °C

Dimensions Hand-held unit : 220 mm x 130 mm x 45 mm Pressure sensor : Ø = 60 mm , L = 210 mm Carrying case : 470 mm x 365 mm x 146 mm

Weight Hand-held unit : 790 g Pressure sensor : 830 g Carrying case : 6500 g incl. contents

Screenshots of the DPI software Carrying case

Analyzing software

After measuring the pressure with the hand-held data acquisition unit and the pressure sensor, the measured data may be downloaded to any PC and analyzed with our analyzing software supplied with the DPI system.

Pressure relevant to crankshaft angle, peak pressure and the PV diagram may be displayed as well as the derivative plot. Additionally, the power of each cylinder and the total power of the engine may be calculated, see figures below.

Other functions including overlaying of measurements for comparisons and e-mail sending function assist in using the DPI system for condition based maintenance.