Echotel Model 350/351 - magnetrol.commagnetrol.com/v2/pdf/mii\51-616.pdf · Read this Manual Before...

$Page 1: Echotel Model 350/351 - magnetrol.commagnetrol.com/v2/pdf/mii\51-616.pdf · Read this Manual Before Installing This manual provides information on the Echotel Model 350/351 Ultrasonic$
Ultrasonic

Non-Contact

Level

Transmitter

Echotel®

Model 350/351

Installation and Operating Manual

Read this Manual Before InstallingThis manual provides information on the Echotel Model350/351 Ultrasonic Non-Contact Level Transmitter. It isimportant that all instructions are read carefully andfollowed in sequence. Detailed instructions are includedin the Installation section of this manual.

Conventions Used in this ManualCertain conventions are used in this manual to conveyspecific types of information. General technical material,support data, and safety information are presented innarrative form. The following styles are used for notes,cautions, and warnings.

NotesNotes contain information that augments or clarifiesan operating step. Notes do not normally containactions. They follow the procedural steps to whichthey refer.

CautionsCautions alert the technician to special conditions thatcould injure personnel, damage equipment, or reducea component’s mechanical integrity. Cautions are alsoused to alert the technician to unsafe practices or theneed for special protective equipment or specific mate-rials. In this manual, a caution box indicates a poten-tially hazardous situation which, if not avoided, mayresult in minor or moderate injury.

WarningsWarnings identify potentially dangerous situations orserious hazards. In this manual, a warning indicates animminently hazardous situation which, if not avoided,could result in serious injury or death.

Safety MessagesThe Echotel Model 350/351 is designed for use inCategory II, Pollution Degree 2 installations. Follow allstandard industry procedures for servicing electrical andcomputer equipment when working with or around highvoltage. Always shut off the power supply before touchingany components. Although high voltage is not present inthis system, it may be present in other systems.

Electrical components are sensitive to electrostaticdischarge. To prevent equipment damage, observesafety procedures when working with electrostaticsensitive components.

This device complies with Part 15 of the FCC rules.Operation is subject to the following two conditions:(1) This device may not cause harmful interference,and (2) This device must accept any interferencereceived, including interference that may cause unde-sired operation.

WARNING! Explosion hazard. Do not connect ordisconnect equipment unless power has been switched offor the area is known to be non-hazardous.

Low Voltage DirectiveFor use in Category II installations. If equipment is usedin a manner not specified by manufacturer, protectionprovided by equipment may be impaired.

Notice of Trademark, Copyright, and LimitationsEchotel is a registered tradename of MagnetrolInternational.Copyright © 2004 Magnetrol International,Incorporated. All rights reserved.

Magnetrol/STI reserves the right to make changes to theproduct described in this manual at any time withoutnotice. Magnetrol/STI makes no warranty with respect tothe accuracy of the information in this manual.

WarrantyAll Magnetrol/STI 350/351 Ultrasonic Non-ContactLevel Transmitters are warranted free of defects in mate-rials or workmanship for one full year from the date oforiginal factory shipment.

If returned within the warranty period; and, uponfactory inspection of the control, the cause of the claim isdetermined to be covered under the warranty; then,Magnetrol/STI will repair or replace the control atno cost to the purchaser (or owner) other thantransportation.

Magnetrol/STI shall not be liable for misapplication,labor claims, direct or consequential damage or expensearising from the installation or use of equipment.There are no other warranties expressed or implied,except special written warranties covering someMagnetrol/STI products.

Quality AssuranceThe quality assurance system in place at Magnetrol/STIguarantees the highest level of quality throughout thecompany. Magnetrol/STI is committed to providingfull customer satisfaction both in quality products andquality service.

Magnetrol’s quality assurance systemis registered to ISO 9001 affirming itscommitment to known internationalquality standards providing thestrongest assurance of product/servicequality available.

Table of Contents

1.0 Installation1.1 Unpacking ..............................................................11.2 Mounting ...............................................................1

1.2.1 Unit Mounting Location .............................11.2.2 General Unit Mounting Requirements ........21.2.3 Remote Transmitter Mounting Procedure ....21.2.4 Sensor Mounting Procedure.........................3

1.2.4.1 Remote Sensor Cabling.........................31.3 Electrostatic Discharge (ESD)Handling Procedure...31.4 Wiring ....................................................................4

1.4.1 Power Wiring ...............................................41.4.2 Sensor Wiring (Model 351 Remote Only)....41.4.3 4–20 mA Output Signal Wiring...................5

2.0 Set Up and Operation2.1 User Interface .........................................................52.2 Main Menu Layout.................................................62.3 General Set Up Procedures .....................................72.4 Mode of Operation...............................................11

2.4.1 Height or Distance Selection .....................112.4.2 Height Mode .............................................112.4.3 Distance Mode...........................................11

2.5 Special Menus.......................................................122.5.1 Mode Selection ..........................................122.5.2 Loop Current Check..................................132.5.3 Service Menu .............................................13

3.0 Reference Information3.1 Description...........................................................143.2 Principle of Operation ..........................................143.3 Troubleshooting....................................................14

3.3.1 Loss Displayed ...........................................143.3.2 Output Not Tracking Level........................14

3.4 Agency Approvals .................................................153.5 Specifications ........................................................16

3.5.1 Electronic...................................................163.5.2 Transducer .................................................163.5.3 Performance...............................................163.5.4 Model 350 Dimensional ............................173.5.5 Model 351 Dimensional ............................18

3.6 Replacement Parts ................................................193.6.1 Parts Identification.....................................193.6.2 Sensors — 350 Integral..............................203.6.3 Sensors — 351 Remote..............................20

3.7 Model Numbers ...................................................213.7.1 Model 350 Integrally Mounted

Level Transmitter .......................................213.7.2 Model 351 Remote Mounted

Level Transmitter .......................................223.7.3 Connecting Cable ......................................223.7.4 Model 395 Remote Mounted Transducer ..23

NOTES ..............................................................................24

Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter

51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter1

SpanMax.

Range

12" (305) Dead Zone

L I Q U I D

Figure 1Transducer Dead Zone

1.0 Installation

Caution: Please read the entire installation section carefully prior tostarting installation.

1.1 Unpacking

Unpack the instrument carefully. Make sure all compo-nents have been removed from the packing material.Inspect all components for damage. Report any concealeddamage to the carrier within 24 hours. Check the contentsof the packing slip and report any discrepancies to thefactory. Check the nameplate model number to be sure itagrees with the packing slip and purchase order. Checkand record the serial number for future reference whenordering parts.

1.2 Mounting

1.2.1 Unit Mounting Location

The level transmitter should be mounted in a location thatpermits easy access for maintenance. Avoid locations thatare exposed to direct sunlight, flooding, high levels ofradiated electromagnetic interference, and excessivevibration or shock.

Model 350/351 sensors must be mounted directly over thematerial to be measured. This may be accomplished withthe NPT mounting.

Proper mounting and wiring of this ultrasonic unit is ofutmost importance. Accuracy can be adversely affected ifthe sensor is mounted off axis, or where obstacles existbetween the sensor face and the liquid surface.

NOTE: The 350/351 requires a dead zone distance between thebottom of the sensor and the maximum level of material to bemeasured. Minimum dead zone = 12 inches (305 mm).Maximum dead zone should be limited to about 10 ft(3 meters) as this blanking distance is extended at theexpense of the useful span over which the instrumentoperates satisfactorily. At temperatures greater than +140° F(+60° C) the minimum dead zone is extended to 18 inches(457 mm).

51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter 2

1.2.2 General Unit Mounting Requirements

1. Make sure that there are no obstructions between the faceof the sensor and the liquid level. Ultrasonic energy radi-ates from the sensor face in a cone-shaped beam of approx-imately 12° width (diameter). Any object within the sig-nal's path may produce an echo that can mask the trueecho returned by the liquid surface.

2. Position the sensor so that the radiating surface or sensorface is exactly parallel to the target surface. This will pro-vide the strongest return signals and enhance the reliabilityof the 350/351.

3. In applications where the material level can reach the topof the tank, the sensor portion of the unit must be mount-ed in a short, flanged standpipe. The diameter of thestandpipe should be at least 8 inches (203 mm) and itslength should be limited to 12 inches (305 mm). Refer toFigure 2.

4. Avoid installing the sensor in tank top openings thatexhaust heated air or vapors. The boundaries between thevapors and the outside air often represent acoustic imped-ance gradients that can cause troublesome sound reflec-tions. In those installations, the sensor should be mountedwell away from the opening inside the tank, or in a stand-pipe as illustrated here. Refer to Figure 3.

1.2.3 Remote Transmitter Mounting Procedure

Remote mount Model 351 transmitters should be mountedin a location that permits easy access for maintenance.Avoid locations that are exposed to direct sunlight, flood-ing, high levels of radiated electromagnetic interference,and excessive vibration or shock.

1. Mount the enclosure to a wall or flat surface using appro-priate screws or bolts. A remote mounting bracket is avail-able from the factory, if required. Refer to mounting holepattern as shown in the dimensional drawing on page 18.

2. Provide watertight seals for all wiring entrances into theenclosure.

3. Install conduit for power and control wiring. Be sureall connections to the enclosure maintain the properNEMA rating.

4. Be sure to replace housing cover before proceeding tosensor mounting.

Figure 2Sensor Mounting in Standpipes

8" (203) Minimum I.D.

2" NPT

Transducer

This end welded or flanged

Standpipe

Maximum 12" (305 mm) or less

Figure 3Sensor Mounting for Tanks with Exhaust


1.2.4 Sensor Mounting Procedure

NOTE: Be sure the sensor location meets the requirements discussedunder Section 1.2.2, General Unit Mounting Requirements.

1. Position sensor over the tank opening. Install the 3⁄4" NPTor 2" NPT sensor in the tank fitting, flange, or mountwith an optional mounting bracket. Pipe thread com-pound is recommended on stainless steel sensors.

Caution: Unit should only be hand-tightened into the process con-nection. The wrench flats should only be used whenremoving the unit. Overtightening will cause transducererrors and will void the warranty.

1.2.4.1 Remote Sensor Cabling

1. Remote mount Model 351 units require installation ofa watertight conduit from the sensor to the transmitterenclosure.

2. Carefully pull the coaxial cable and temperature cableattached to the sensor through the conduit to the transmitter.

Caution: Avoid excessive twisting of both the sensor and tempera-ture cables.

NOTE: In high humidity applications, it is recommended that the sen-sor wiring be completely immersed in an insulating compoundwhere the conduit connects to the sensor. (3M #4441 GellaRe-enterable Encapsulating Compound or equivalent).

1.3 Electrostatic Discharge (ESD)Handling Procedure

Magnetrol’s electronic instruments are manufactured tothe highest quality standards. These instruments utilizeelectronic components which may be damaged by staticelectricity present in most work environments. The follow-ing steps are recommended to reduce the risk of compo-nent failure due to electrostatic discharge:

1. Ship and store circuit boards in anti-static bags. If an anti-static bag is not available, wrap board in aluminum foil.Do not place boards on foam packing materials.

2. Use a grounding wrist strap when installing and removingcircuit boards. A grounded workstation is also recommended.

3. Handle printed circuit boards only by the edges. Do nottouch components or connector pins.

4. Ensure that all electrical connections are completely madeand none are partial or floating. Ground all equipment to agood, earth ground.


1.4 Wiring

1.4.1 Power Wiring

NOTE: Before connecting the power line to the transmitter, be surethat the voltage identification on the nameplate matches thepower supply. DO NOT attempt to operate this unit at volt-ages other than as identified as it will damage the unit. Referto Figure 4.

NOTE: Ensure power is off before proceeding.

1. Remove housing cover and terminal strip cover.

2. No. 14 AWG wire size is the recommended maximum sizefor power wiring. The power and analog output terminalstrips are marked for proper identification.

3. Bring wires into housing.

4. Attach earth ground to housing base using the green headscrew.

5. Run power leads to power terminal strip on PC board.

6. Dress wiring to ensure no interference or contact withcover or circuit board components.

Caution: Observe all applicable electrical codes and proper wiringprocedures.

7. Prevent moisture seepage into the enclosure by installingapproved seal-drain fittings in the conduit run leading tothe unit.

8. Replace terminal strip cover and housing cover.

1.4.2 Sensor Wiring (Model 351 Remote Only)

The sensor contains two cables which must be connectedto the transmitter. The sensor cable is the round coaxialcable which consists of a center coaxial conductor and ashield wrapped around it. The temperature cable is atwisted pair.

NOTE: A minimal length of insulation should be cut off the sensorcabling to limit contact of the bare wires with the PC board.

1. Connect center conductor of sensor cable to X1 positionon TB2 on the amplifier PC board in the transmitter.

2. Connect shield of sensor cable to GND of TB2.

3. Connect black wire of temperature cable, (twisted pair), tonegative (–) TEMP terminal of TB2. Refer to Figure 5.

4. The other wire from twisted pair, (red or white), is con-nected to positive (+) TEMP terminal of TB2.

Figure 4Transmitter Wiring

GreenHead Screw,ProtectiveGround

V outRef.

GND

AC Hot

AC Neutral

Power

Loop +Loop –

Figure 5Sensor Wiring

X1Gnd+–

SensorCableTemp.Cable

TB2


NOTE: If sensor housing is provided, only use connecting cableordered from the factory. Use of cables not provided by thefactory may void the warranty.

1.4.3 4–20 mA Output Signal Wiring

The 4–20 mA output connections are made by looseningthe screws at the output connections terminal strip, insert-ing the wires with spade lugs and tightening the screws.Refer to Figure 4. The loop is optically isolated, hasnon-grounded outputs, and can drive a 1000 ohm load.Recommended wire is 22 gauge, twisted shielded pair.Shield and black wire should be terminated at the (–)output terminal. The shield should be floating at thedriven device.

1. Bring wires into housing.

2. Connect output wires to appropriate terminals.

3. Replace terminal strip cover.

4. Replace housing cover.

2.0 Set Up and Operation

2.1 User Interface

The Model 350/351 Transmitter can be programmed for avariety of level control applications. Configuration data isentered via three tactile-feedback push buttons located onthe circuit board under the cover of the enclosure (seeFigure 6). The push buttons and their functions areshown below.

Upon power up, the LED will display the followingmessage: MAGNETROL INT’L followed by a series of walkingdots as follows: ....., or one of the chosen displays.

NOTE: The 350/351 is able to display a choice of four display modes.This display may be changed by accessing the SpecialMenus described on pages 12 and 13.

IDLE – MAGNETROL INT’L… (Preferred Mode)

DIST – Displays distance in run condition

LEVL – Displays tank level in run condition

LOOP – Displays current output

UP/RAISE – Used to scroll up through menu selec-tions or raise numeric values. Holding down for a fewseconds will increase the rate of change.

LEDDisplay

ENT

Figure 6User Interface


DOWN/LOWER – Used to scroll down throughmenu selections or lower numeric values. Holdingdown for a few seconds will increase the rate of change.

ENTER – Used to select displayed value and tocontinue to next menu selection.

2.2 Main Menu Layout

ENT

PRESS ENT TO BEGIN

UNIT ENT FEET (XX.X)INCH (XXX.)M (X.XXCM (XXX.)MM (XXXX)

ENT

RNGE ENT MANL ENT XXX.

AUTO ENT XXX.

ENT

SPAN ENT MANL ENT XXX.

AUTO ENT XXX.

~ (1*) ~ ENT~ (2*) ~

SET? ENT : Saves parameters in memory:

SAFE ENT 4 mA (output on failure)

20 mA (output on failure)

LAST (hold last value)

ENT

DIST ENT XXX.ANY KEY

LEVL ENT XXX.

SGNL ENT XX%ANY KEY

LOOP ENT XX.XANY KEY

RUN? ENT Normal display as selectedin Initialization Menu.

UNIT

1* Path followed if no change is made to range or span.2* Path followed if range or span is altered.


2.3 General Set Up Procedures

After completing the Installation/Wiring sections (pages1–5) and studying the Main Menu Layout (page 6), powerup the unit.

Caution: Power the Model 350/351 and perform all calibration in anon-hazardous area.

There are nine steps in the initial set up. All nine stepsmust be accessed in order to provide optimum control foryour application. After the initial set up, any of the nineprogrammable functions can be accessed without poweringdown the unit. All set up procedures are written based onthe HEIGHT Mode selection. Refer to Section 2.4.1,Height or Distance Selection on page 11. If using theDISTANCE Mode, all measurements are taken from thesensor face.

NOTE: It is recommended that the user determine the values to beprogrammed into the unit prior to entering values using thekeypad. This is due to a security feature which places a 30second time limitation in various stages of the menu. If a timeout occurs during parameter selection, the unit assumes theprevious value for that parameter, continues to control underthose values and will revert to the display mode selected fromthe Special Menu. Refer to page 12. If a time out occurs dur-ing span selection, the range as well as span will revert to theprevious setting. All set up procedures are written based onthe IDLE display mode as the unit shipped from the factory.The DIST, LEVL, or LOOP display modes may be chosen atany time. Refer to Section 2.5, Special Menus on page 12.

Upon power up, the unit will display the normal operatingmessage followed by the walking dots as follows:

MAGNETROL INT’L..........

STEP 1

To enter into the menu, press the key. The display willread UNIT. UNIT is the unit of measurement used for allcalculations and display within the 350/351. Press a second time to display the current units selected. Tochange UNITS, use the or arrow key to scrollthrough the UNIT selections. Press to select thedisplayed UNIT desired. The display will now readUNIT once again. Press the push button to proceedto STEP 2 – RANGE (RNGE).

ENT

ENT

ENT


STEP 2

RANGE (RNGE) (4 mA) – Range is the distance fromthe face or the bottom of the transducer to the farthestpoint to be measured. The maximum range for theModel 350/351 is approximately 25 feet (7.6 m). WithRNGE displayed, press to continue. The display willread MANL for manual entry of the range value. Use eitherthe or key to toggle between MANL and AUTO.If MANL is selected, press to display the current oper-ating value. Use the or keys to raise or lower thenumeric value. Holding down the keys for several secondswill increase the rate at which the values are changed.When the desired value is displayed, press the key toaccept this value and to exit RANGE.

Selecting AUTO will allow for the 350/351 to actuallymeasure the distance between the face of the transducerand the current liquid level. This selection can be used as aconvenience when the level of the material being measuredis at a desired minimum level. Press to display the cur-rent range. There is no time limitation in this selection.Press once again to accept the value and to exitRANGE. Press the key to proceed to STEP 3 – SPAN (SPAN).

NOTE: When using the AUTO mode in range or span, the 350/351must first be manually programmed with values for range andspan which are larger than the expected values. This allowsthe 350/351 to automatically measure the correct values with-in the programmed window of accepted signals.

STEP 3

SPAN (SPAN) – Span is the difference between the lowestlevel (empty tank) and the desired maximum level.Maximum span is the range value, less the 12" dead zonein which measurement cannot take place. With SPAN dis-played on the LED, press to display MANL for manualentry of the span value. Use either the or key totoggle between MANL and AUTO.

If MANL is selected, press to display the current oper-ating value. Use the or key to raise or lower thenumeric value. When the desired value is displayed, pressthe key to accept this value and to exit SPAN.

Selecting AUTO will allow the 350/351 to actually mea-sure the distance between the face of the transducer andthe current material level, and calculates the span based onthat measurement. This selection is used in applicationswhen the level of the material being measured is at a desiredmaximum level. Press to display SPAN VALUE.ENT

ENT

ENT

ENT

ENT

ENT

ENT

ENT

ENT


NOTE: There is no time limitation in this selection. If OVER or UNDRflashes, an illegal parameter has been selected. Review rangevalues and re-enter the correct value. Press once again toaccept this value and to exit SPAN. Press the key to pro-ceed to STEP 4 – SAFE.

STEP 4

FAIL-SAFE (SAFE) – SAFE is designated as the fail-safecondition of the transmitted output and the desiredcondition of the output in the event of a loss of echo for30 seconds or more. The user has a choice to drive theunit to 4 mA, 20 mA, or to remain at the LAST value.Press to display the last chosen fail-safe condition. Press

or arrow until desired fail-safe condition is dis-played. Press to accept the setting. Press the arrowto proceed to STEP 5 – DISTANCE (DIST).

Caution: If the actual level falls below the maximum range of theunit, the fail-safe selection must be set up so that thedesired output is transmitted. When the level falls belowthe programmed range, the display will show LOSS. If thiscondition occurs, the fail-safe actions will take place.

WARNING: If level exceeds the programmed span, false display oroutput/control errors will occur. Sensor should beinstalled and unit programmed to assure that this levelcondition cannot occur.

STEP 5

DISTANCE (DIST) – Distance is the measurement fromthe face or the bottom of the transducer to the level of thematerial being measured. This step is a read only display,meaning a continuous display of distance in the unitsselected in STEP 1. There is no time limitation in thisstep. When DIST is displayed, press to display thedistance. Press any key to exit DIST and press the keyto continue to STEP 6 – LEVEL (LEVL).

STEP 6

LEVEL (LEVL) – Level is the measurement from the bot-tom of the level span to the actual level of the materialbeing measured. This step is a read only display, continu-ously displaying the level within the tank or vessel in theunits of measurement selected in STEP 1. There is no timelimitation in this step. When LEVL is displayed, press to display the level. Press any key to exit LEVL and pressthe key to continue to STEP 7 – SIGNAL (SGNL).

ENT

ENT

ENT

ENT

ENT


STEP 7

SIGNAL (SGNL) – Signal refers to the strength of thesignal being received from the surface level of the materialbeing measured. With SGNL displayed, press to dis-play the signal strength. There is no time limitation in thisstep. The representation of the signal strength is displayedin a value from 0–100% in 5% steps. Ideally the readingshould be between 40–95%. If the readings are less than25%, improper alignment or poor installation proceduresmay be the cause. Contact factory for assistance. If thereading is within the acceptable range, press any key toexit SGNL and press the key to continue to STEP 8 –LOOP (LOOP).

STEP 8

LOOP (LOOP) – Loop is a continuous display of theactual loop output mA current. The display is limited to3 characters and a decimal point. The 350/351 uses a D/Aconverter with 8 bit resolution, and divides the operatingdistance (SPAN in Height Mode, RANGE – SPAN inDistance Mode) into 256 equal steps, each correspondingto a step change in current. Therefore the smallest stepchange in current is (20 – 4)/256 = 0.0625 mA. (Refer toHeight/Distance Selection for more information on resolu-tion of output or current). With LOOP displayed, press

to display the actual loop value. Any key will exitLOOP and press the key to continue to STEP 9 –RUN (RUN?).

STEP 9

RUN (RUN?) – This is the end of the GENERAL SET UPPROCEDURES and provides the operator the opportunityto check previous settings before leaving the main menu.Returning to the normal operating mode is accomplishedby pressing .

MAGNETROL INT’L.... will then be displayed, or the previouschosen display (DIST, LEVL, or LOOP) as described inSection 2.5, Special Menus on page 12.

ENT

ENT

ENT


2.4 Mode of Operation

2.4.1 Height or Distance Selection

The Model 350/351 allows the user to choose the MODEof Operation, HEIGHT, (HGT ) or DISTANCE (DIST). Thischoice is made in a special SET-UP menu which is accessedby pressing the button three times from the normalrun condition. The Model 350/351 responds by displayingMODE. Press to display either HGT for HEIGHT mode orDIST for DISTANCE mode. The and buttons allowthe user to change the mode. Press to accept thedisplayed mode.

NOTE: Almost all level applications are configured in the HEIGHTmode.

2.4.2 Height Mode

The HEIGHT mode will provide a 4 mA output when themonitored fluid level is at the bottom of the tank, at thedistance defined by the RANGE setting which the cus-tomer has chosen. The current output at the top of thetank, as defined by the customer programmed SPAN, is20 mA. The output current that the 350/351 provides atlevels between the bottom and top of the tank is deter-mined by an 8 bit D/A converter. This divides the pro-grammed operating distance into 256 equal steps, each ofwhich has its own predefined output current. This 8 bitD/A conversion is the limiting factor in the resolutionof the current loop. The resolution is the programmedSPAN/256. At the maximum SPAN of 24 feet (7.3 m),the resolution is 1.125 inches (29 mm).

Resolution is improved in normal operation with a morelimited operating distance. For example, if a 10 foot (3 m)SPAN is chosen, the resolution is less than 1⁄2" (12 mm)and at 2 feet (0.6 m), the resolution is less than 1⁄8" (3 mm).Therefore the resolution is dependent on the SPAN select-ed for the particular application.

2.4.3 Distance Mode

The DISTANCE mode allows the RANGE and SPANto be programmed as the distance from the face of thetransducer. The distance mode is typically only used fordemonstration or diagnostic purposes, as opposed tolevel measurement.

NOTE: The resulting loop current output in this mode is reversed fromthe HEIGHT Mode. When setting these parameters, be sure allvalues are calculated based on the same MODE of Operation.

ENT

ENT


2.5.1 Mode Selection

The Mode selection is accessed by pressing the buttonthree times from the normal display mode or RUN. Theunit will display MODE. Press to display present mode(HGT or DIST). Use the or keys to choose desiredmode. Refer to Section 2.4, Mode of Operation for addi-tional information.

NOTE: In the DISTANCE Mode, all values of range and span aremeasured from the sensor face instead of the reference pointor range point. Although distance selection is measured fromthe sensor face, the output can only be set between the SPANand RANGE.

Changing MODE will reset range and span. All set-up pro-cedures must be repeated if MODE is changed.

ENT

In the DISTANCE Mode, when the liquid level is at thebottom of the tank, defined by the RANGE setting, theloop output current is 20 mA. When the liquid is at thetop of the tank, as defined by the SPAN set point, mea-sured from the sensor face, the output is 4 mA.

2.5 Special Menus

The Special Menus allow setting of the mode of opera-tion, maximum gain, and the desired default display in therun condition. Shown below is the menu screen:

ENT

ENT

ENT IDLEDISTLEVLLOOP

ENT

ENT ENT ADDRHOST

TERM

OFF BAUD

ENT

ENT

ENT

ENT

ENT

ENT

44

ENT

MODE

MAXG

DISP

COMM

UNIT

DIST

HGT

00

9600480024001200


Press and unit will display normal run condition ifmode was changed. If the mode of operation is notchanged, the display will show the next selection MAXG(Maximum Gain Limit).

Press to display current maximum gain limit. Thefactory default valve for MAXG is 44. Use the and arrow to change limit. Press to save maximumgain value and exit MAXG.

IDLE – MAGNETROL INT’L…

DIST – Displays distance in run condition

LEVL – Displays tank level in run condition

LOOP – Displays mA current value

Use the or arrow to select and press and thenthe arrow to exit and return to the normal operatingmode.

NOTE: The COMM menu is not used.

2.5.2 Loop Current Check

This mode is accessed by pressing four times from thenormal display mode or RUN.

The unit will display LOOP. The LOOP set up allowsthe output current loop to be driven to 4 mA or 20 mAregardless of the monitored fluid level. This feature isespecially beneficial for customer setup of new systemswith the 350/351 as the loop driver. Press to exit LOOPand to display UNIT.

2.5.3 Service Menu

If in the event of a problem with the Model 350/351, itmay be necessary to access the Service Menu located with-in the unit. To access this menu, the keypad must bepressed two times while the unit is in the normal operatingmode and displaying the MAGNETROL INT’L… message, orother chosen display.

When the button is depressed twice, SRVC will bedisplayed. Press to display either GAIN, TEMP, PEAK,TOFF or VERS.

will display the value for each of the selections. Usethe or key to scroll to the next parameter.

ENT

ENT

ENT

ENT

ENT

ENT

SRVC

UNIT

GAIN

TEMP

PEAK

TOFF

VERS

XXXX

ENT

ENT

ENT

ENT


NOTE: These values are read only parameters and cannot bechanged by the operator. They are for reference use only, how-ever, in the event of a question or problem with the 350/351,an authorized representative or service technician will requestthe values displayed in this menu. Become familiar with thisService Menu and the corresponding instructions in the eventof the need to access this Special Menu.

3.0 Reference Information

3.1 Description

Model 350/351 non-contact ultrasonic transmitters detectlevel in a wide variety of liquid level applications. The non-contact sensor may be mounted integrally or it may bemounted up to 100 feet (30 m) from the micro-processor-based electronics. All parameters are entered by means of aneasy to use menu-based keypad housed within the unit.

3.2 Principle of Operation

Pulses generated by the microprocessor-based electronicsare directed via the sensor to the liquid surface. Thereturning echo signal is detected by the sensor. The micro-processor amplifies and converts the signal into a digitalrepresentation of the distance from the reflecting surface.A 4–20 mA output current loop is supplied providingthe monitored level data to external control devices. All

operating parameters are entered via three tactile-feedbackpush buttons and displayed on a four character LEDdisplay located under the transmitter cover.

3.3 Troubleshooting

3.3.1 Loss ( LOSS ) Displayed

1. The transmitter will display LOSS when the level falls belowthe selected range value. Signal maintains fail-safe selectionand will return to normal output when level returns to a valuewithin selected range. Increase range if this is not desirable.

2. Echo lost. Check for surface foam, vapors or non-vertical(off center) mounting of sensor.

3.3.2 Output Not Tracking Level

1. Check for obstruction in tank causing false echo.

2. Incorrect calibration mode (HEIGHT/DISTANCE) Refer to Section 2.4.1, Height or Distance Selection on page 11.If unit was set up in the DISTANCE mode, change to theHEIGHT mode to verify transmitter performance.


3.4 Agency Approvals

FM 351-60XX-000 orNon-hazardous NEMA 4X environments351-R0XX-000 with

395-XXXX-0XX

350-60XX-05X orNon-hazardous NEMA 4X environments

350-80XX-05X

Explosion ProofClass I, Div. 1; Groups C & D

350-80XX-05EClass II, Div. 1; Groups E, F & G

350-80XX-05FClass III, NEMA 4X, T6

Explosion ProofClass I, Div. 1; Groups B, C & D

395-XEXX-XXX Class II, Div. 1; Groups E, F & GClass III, NEMA 4X, T6

Explosion ProofClass I, Div. 1; Groups A, B, C & D

395-XEXX-003 Class II, Div. 1; Groups E, F & GClass III, NEMA 4X, T6

CSA 351-50XX-000 orNon-hazardous Type 4X environments351-R0XX-000 with

395-XXXX-0XX

350-50XX-05X orNon-hazardous Type 4X environments

350-80XX-05X

351-X0XX-000 withClass I, Div. 2; Groups A, B, C & D

395-XX1X-0XXNon-incendive locations Class II, Div. 2; Groups E, F & G

Class III, Type 4X

350-50XX-05E

Non-incendive locationsClass I, Div. 2; Groups A, B, C & D

350-50XX-05FClass II, Div. 2; Groups E, F & G

350-80XX-05EClass III, Type 4X

350-80XX-05F

351-R0XX-000 withClass I, Div. 1; Groups C & D

395-XE1X-0XXExplosion Proof Class II, Div. 1; Groups E, F & G

Class III, Type 4X

350-80XX-05E orClass I, Div. 1; Groups C & D

350-80XX-05FExplosion Proof Class II, Div. 1; Groups E, F & G

Class III, Type 4X

395-XE0X-0XXClass I, Div. 1; Groups A, B, C & D

Explosion Proof Class II, Div. 1; Groups E, F & GClass III, Type 4X

AGENCY MODEL APPROVED APPROVAL CATEGORY APPROVAL CLASSES


3.5 Specifications

3.5.1 Electronic

3.5.2 Transducer

3.5.3 Performance

Supply voltage 120 VAC or 240 VAC, 50–60 Hz

Power consumption 5 watts maximum

Output (Controller) Two (2) SPDT 120/240 VAC relays, adjustable differential, 10 A resistive

Output (Transmitter) 4–20 mA isolated, maximum 1000 ohm loop resistance

Fail-safe (Controller) User selectable; on (energized) or off (de-energized)

Fail-safe (Transmitter) User selectable; 4 mA, 20 mA, or hold last value

Time delay (Controller) 1–120 seconds adjustable for each relay set point

Electronics -40° to +160° F (-40° to +71° C)

Humidity 95% Non-condensing (electronics)

Maximum range 25 feet (7.6 meters) from transducer face

Span 2 inches (51 millimeters) minimum

24 feet (7.3 meters) maximum

Frequency 50 kHz

Minimum dead zone 12 inches from -20° to 140° F (305 millimeters from -30° to +60° C)

18 inches from +140° to +160° F (457 millimeters from +60° to +71° C)

Ambient temperature ➀ -20° to +160° F (-30° to +71° C)

Temperature compensation Automatic over range of transducer operating temperature

Operating pressure -10 to +50 psig (0.689 to +3.45 bar)

Beam angle 12° Conical

Cable length 100 feet (30 meters) maximum between transducer and electronics

➀ Kynar and 316SS transducers temperature rating -20° F to+200° F (non-operational to +250° F).

Response time 1 second minimum

Repeatability ±0.125" (±3 mm)

Accuracy ±0.25% of full scale


3.5.4 Model 350 Dimensional

Notes:1. Allow 8 in. (203 mm) overhead

clearance for removal of cover.2. Do not attempt to disassemble

transducer.

Housing Legend

A. NEMA 4XB. NEMA 4X/7/9

3/4" NPT

A 4.69 (119)B 4.62 (117)

1.90(48)

2" NPTThread

6.00 (152) or 10.00 (254)depending upon model

RotationClearance

A 3.25 (83)B 3.00 (76)

A 6.75 (200)B 5.50 (218)

A 3.12 (79)B 4.00 (102)

OptionalMounting

Flange

Model 350Integral Mount

Floor Mount Bracket

3.00

29.00

1.503.12

6.12

20.50

22.50

2.00

3/4" MNPT (P/N 36-3813-002)2" FNPT (P/N 36-3813-001)

2"�FNPT

inches (mm)


3.5.5 Model 351 Dimensional

inches (mm)

20.50

22.50

3.00

1.50

2.00

3.12

3/4" MNPT (P/N 36-3812-002)2" FNPT (P/N 36-3812-001)

Wall Mount Bracket

3/4" NPT�Conduit�Connection

2 Holes�.38 (10) Dia.

3.00�(76)2.00�

(51)

2.37�(60)

3.50�(89)

1/2" NPT (std.)�or 3/4" NPT (opt.)�Transducer/�Amplifier�Cable �Connection

3.25�(83)

3.75�(95)

8.62�(219)

Bracketfront view

Side view

Model 351Remote Mount (NEMA 4X)

2" NPT Sensor w/ Housing 395-5X10-00X

Sensor w/ Housing 395-1X10-00X

Sensor w/o Housing395-1X00-00X 395-5X00-00X

OptionalMountingFlange

3.00(76)

4.63 (118)Dia.

2.75(70)

3.00(89)

3.00 (76),6.00 (152) or10.00 (254)dependingupon model

3/4" NPT2" NPT

3.00(76)

4.63 (118)Dia.

2.75(70)

3.00(89)

3.00 (76),6.00 (152) or10.00 (254)dependingupon model

3/4" NPT

3/4" NPT

2"NPT

3.00 (76),6.00 (152) or10.00 (254)depending

upon model

3/4"NPT

3/4"NPT

6.00 (152) or10.00 (254)depending

upon model

3/4"NPT

3.00(76)


3.6.1 Parts Identification

3.6 Replacement Parts

9

3

1

7

10

52

6

4 2

103

1

8

12

9

3

1

11

10

52

6

4

7

11

Lexan® is a registered trademark of General Electric

No. Description 350 Integral351 Remote

Transmitter Sensor

1 BaseNEMA 4X 004-9160-002 N/A

NEMA 4X/7/9 004-9104-001 004-9153-001 004-9104-001

2 Cover

NEMA 4X Lexane 089-6596-001 N/A

NEMA 4X Steel 089-6596-002 N/A

NEMA 4X/7/9 089-6595-001 004-9149-001 089-6597-001

3 O-RingNEMA 4X 012-1318-001 N/A

NEMA 4X/7/9 012-2101-245 012-2101-253 012-2101-345

4 Main PC Board Z30-3502-002 N/A

5 Amplifier Board Z30-3501-002 N/A

6 Voltage PC Board120 VAC Z30-3514-001 N/A

240 VAC Z30-3514-002 N/A

7 RS-485 PC Board Z30-3526-001 N/A

8 Sensor PC Board N/A Z30-3515-001

9 Terminal Block Cover 009-6164-001 N/A

10 BracketNEMA 4X 005-6649-001 N/A

NEMA 4X/7/9 005-6647-001 005-6650-001 005-6634-001


3.6 Replacement Parts (cont.)

3.6.2 Sensors — 350 Integral

3.6.3 Sensors — 351 Remote

No. SensorHousing Connection Sensor

LengthSensor Material

Kynar/CPVC Kynar Stainless Steel

12

w/Housing(short cables)

3⁄4" NPT3" Z58-1070-019 Z58-1071-019 Z58-1119-0046" Z58-1070-020 Z58-1071-020 Z58-1061-016

10" Z58-1070-021 Z58-1071-021 Z58-1061-017

2" NPT3" Z58-1070-022 Z58-1071-022 Z58-1061-0186" Z58-1070-023 Z58-1071-023 Z58-1061-019

10" Z58-1070-024 Z58-1071-024 Z58-1061-020

w/o Housing(20 ft. of cables)

3⁄4" NPT3" Z58-1070-013 Z58-1071-013 Z58-1119-0026" Z58-1070-014 Z58-1071-014 Z58-1061-011

10" Z58-1070-015 Z58-1071-015 Z58-1061-012

2" NPT3" Z58-1070-016 Z58-1071-016 Z58-1061-0136" Z58-1070-017 Z58-1071-017 Z58-1061-014

10" Z58-1070-018 Z58-1071-018 Z58-1061-015

No. Connection Sensor LengthSensor Material

Kynar/CPVC Kynar Stainless Steel

11 2"6" Z58-1070-023 Z58-1071-023 Z58-1061-019

10" Z58-1070-024 Z58-1071-024 Z58-1061-020


3.7 Model Numbers

3.7.1 Model 350 Integrally Mounted Level Transmitter

1 4–20 mA isolated

0 120 VAC

1 240 VAC

INPUT VOLTAGE

3 5 0 0 1 0 5

350 Integrally mounted level transmitter

5 Carbon steel cover, NEMA 4X rating, single 3⁄4" NPT conduit hub

6 Transparent Lexan®`cover, NEMA 4X rating, single 3⁄4" NPT conduit hub

8 Cast aluminum cover, NEMA 4X/7/9 rating, dual 3⁄4" NPT conduit hubs

BASIC MODEL NUMBER

HOUSING ➀

OUTPUT

SENSOR CODE

C Kynar/CPVC, 6" (152 mm) length, 2" NPT

D Kynar/CPVC, 10" (254 mm) length, 2" NPT

E 316 SS, 6" (152 mm) length, 2" NPT

F 316 SS, 10" (254 mm) length, 2" NPT

K Kynar, 6" (152 mm) length, 2" NPT

L Kynar, 10" (254 mm) length, 2" NPT

TRANSDUCER

➀ All three housings have a cast aluminum base.

5 Standard


3.7.2 Model 351 Remote Mounted Level Transmitter

5 Carbon steel cover, NEMA 4X rating, single 3⁄4" NPT conduit hub6 Transparent Lexan®`cover, NEMA 4X rating, single 3⁄4" NPT conduit hub

R Cast aluminum cover, NEMA 4X rating, dual 1" NPT conduit hubs

HOUSING ➀

1 4–20 mA isolated

OUTPUT

3 5 1 0 1 0 0 0

0 120 VAC1 240 VAC

INPUT VOLTAGE

0 3 7 3 1 7 0

CABLE LENGTH IN FEET

10 feet (3 m) minimum, 100 feet (30 m) maximum lengthExample: 12 foot cable length = 037-3170-012

351 Remote mounted level transmitterBASIC MODEL NUMBER

➀ All three housings have a cast aluminum base,

3.7.3 Connecting Cable


1C ➀ Kynar/CPVC with 3⁄4" NPT5C Kynar/CPVC with 2" NPT

1K ➀ Kynar with 3⁄4" NPT

5K¡ Kynar with 2" NPT

1E ➀ 316 Stainless Steel with 3⁄4" NPT

5E 316 Stainless Steel with 2" NPT

TRANSDUCER MATERIAL AND PROCESS CONNECTION

395 Remote mounted transducer

BASIC MODEL NUMBER

0 No transducer housing – comes with 20 feet (6 meters) of cable

1 Transducer housing – cable ordered separately (page 10)

TRANSDUCER HOUSING AND CABLE

➀ The 3⁄4" NPT transducer when supplied with transducer housing code 1 does not have aprocess connection. Refer to transducer with housing illustration on page 7.

0 None

1 Wall Mount with 3⁄4" NPT

2 Floor Mount with 3⁄4" NPT

3 Wall Mount with 2" NPT

4 Floor Mount with 2" NPT

MOUNTING BRACKET

003 3" (76 mm)

006 6" (152 mm)

010 10" (254 mm)

TRANSDUCER INSERTION LENGTH

3.7.4 Model 395 Remote Mounted Transducer

3 9 5


NOTES:

BULLETIN: 51-616.4EFFECTIVE: June 2004SUPERSEDES: June 1997

5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317

5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4028 • Fax 630-969-9489 • www.sticontrols.com

Copyright © 2004 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International.STI and STI logotype are registered trademarks of Magnetrol International.

Performance specifications are effective with date of issue and are subject to change without notice.The brand and product names contained within this document are trademarks or registered trademarks of their respective holders.

Service Policy

Owners of Magnetrol/STI controls may request the returnof a control or any part of a control for complete rebuildingor replacement. They will be rebuilt or replaced promptly.Controls returned under our service policy must be returnedby Prepaid transportation. Magnetrol/STI will repair orreplace the control at no cost to the purchaser (or owner)other than transportation if:

1. Returned within the warranty period; and2. The factory inspection finds the cause of the claim to

be covered under the warranty.

If the trouble is the result of conditions beyond our control;or, is NOT covered by the warranty, there will be chargesfor labor and the parts required to rebuild or replace theequipment.

In some cases it may be expedient to ship replacement parts;or, in extreme cases a complete new control, to replace theoriginal equipment before it is returned. If this is desired,notify the factory of both the model and serial numbers ofthe control to be replaced. In such cases, credit for the mate-rials returned will be determined on the basis of the applic-ability of our warranty.

No claims for misapplication, labor, direct or consequentialdamage will be allowed.

Return Material Procedure

So that we may efficiently process any materials that arereturned, it is essential that a “Return MaterialAuthorization” (RMA) number be obtained from thefactory, prior to the material's return. This is availablethrough Magnetrol/STI’s local representative or bycontacting the factory. Please supply the followinginformation:

1. Company Name2. Description of Material3. Serial Number4. Reason for Return5. Application

Any unit that was used in a process must be properlycleaned in accordance with OSHA standards, before it isreturned to the factory.

A Material Safety Data Sheet (MSDS) must accompanymaterial that was used in any media.

All shipments returned to the factory must be by prepaidtransportation.

All replacements will be shipped F.O.B. factory.

NOTE: See Electrostatic Discharge Handling Procedure onpage 3.

ASSURED QUALITY & SERVICE COST LESS

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