Greyline Instruments LIT25 Operating Manual

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USER'S GUIDE

Installation & Operation

Instructions

Level Indicating Transmitter

Model LIT25

Manual Series 3.5.3

Note: This page has been left blank intentionally.

LIT25 Level Indicating Transmitter

INDEX

QUICK BENCH TEST ............................................................................................4

CONNECTIONS .....................................................................................................4

KEYPAD SYSTEM.................................................................................................6

MENU ......................................................................................................................7

CALIBRATION UNITS SELECTION ...................................................................8

4mA CALIBRATION .............................................................................................9

SIGNAL RELAY...................................................................................................10

DAMPING .............................................................................................................11

ECHO LOSS RESPONSE .....................................................................................11

OUTPUT SIMULATION ......................................................................................12

STORE (SAVE) CALIBRATION .........................................................................12

TEMPERATURE DISPLAY.................................................................................13

ENCLOSURE INSTALLATION ..........................................................................14

SENSOR MOUNTING .........................................................................................15

ERROR/WARNING MESSAGES ........................................................................18

FIELD TROUBLESHOOTING ............................................................................19

APPLICATIONS HOTLINE .................................................................................22

PRODUCT RETURN PROCEDURE ...................................................................23

APPENDIX A ........................................................................................................25

APPENDIX B ........................................................................................................31

CONVERSION GUIDE ........................................................................................33

SPECIFICATIONS ................................................................................................34

IMPORTANT NOTE: This instrument is manufactured and calibrated to meet product specifications. Please read this manual carefully before installation and operation. Any unauthorized repairs or modifications may result in a suspension of the warranty.

Available in English Available in Adobe Acrobat pdf format Disponible en français Disponible en español

Page 3

LIT25 Level Indicating Transmitter

QUICK BENCH TEST: Connect Sensor as shown below, then apply Power. When properly connected a soft clicking can be

heard from the sensor and figures will show on the LCD display. Test operation of the LIT25 by holding the sensor steadily and aiming at a flat, stable target 12 to 28" (305 to 711 mm) away from the end of the sensor. Allow a few seconds for the LIT25 to lock onto the target before displaying its distance. The LIT25 will now display range in inches or cm.

Note: The LIT25 will not detect targets beyond the user entered maximum range. CONNECTIONS: POWER INPUT: The standard model requires AC power input between 100 to 130VAC 50/60Hz (1

amp fuse is recommended). No adjustments are necessary for any voltage in this range. Option EI rating is 100-240VAC 50/60Hz. (See OPTIONS section of this manual for connection of optional 24VDC power input).

IMPORTANT NOTE: To comply with CSA/NRTL standards, AC power input and relay connection wires must have a water tight fitting conduit entry to the instrument enclosure.

14 AWG MAX

LINE

GROUND

NEUTRAL

IMPORTANT: MUST CONNECT TO A GOOD GROUND ( 1 Ohm) WITH 14 AWG CONDUCTOR

GND

RELAY (1 AMP)

CONNECT SHIELD

TO GROUND

(THIS END ONLY)

4-20mA

–

CURRENT SOURCE

SENSOR

TO SENSOR

RG62AU COAXIAL

DO NOT POWER LOOP

Page 4

LIT25 Level Indicating Transmitter

RECOMMENDED CONDUIT ENTRY

Use a screwdriver to "knock-out" conduit entry points at bottom of enclosure. Use one entry for power input and relay wires. Use separate entry for 4-20mA and sensor cable.

Page 5

LIT25 Level Indicating Transmitter

KEYPAD SYSTEM

The LIT25 has a simple 2-key calibration system. Operating and calibration modes are shown on the 4digit display. The keys are used to calibrate the LIT25, and to view operating mode and functions. If the keys are not used for 10 minutes, the LIT25 will automatically go to NORMAL MODE. Except in OUTPUT SIMULATION mode, the Relay and 4-20mA output are not affected by use of the keys until your calibration is stored.

PERCENT INCHES CM

ECHO

RELAY

4-DIGIT LCD DISPLAY

CALIBRATION KEYS

LIT25

LEVEL INDICATING TRANSMITTER

POWER CONNECTION

+–

GND

SENSOR CONNECTION

4-20mA CONNECTION

MENU - FLOW CHART

The following diagram shows the LIT25 Menu system. Arrows show the directions to leave a box. Pressing a corresponding key will move to the next box in the direction shown. Numeric values are changed by pressing and holding the  or  keys.

At the bottom of the Menu is a YES? prompt. To store the calibration values permanently (even through power failure), press the  key. If the  key is pressed from the YES? prompt no changes will be stored and the system will return to NORMAL mode.

Page 6

23c

TEMPERATURE Displays Temperature at Sensor

LIT25 Level Indicating Transmitter

See Page #

638.6

RANGE CM

123.4

LEVEL CM

CALU

PERCENT INCHES CM

20 =

roc1

3,5 1,2,4

ron

r oFF

dp10

762.0

40.6

721.4

706.9

RANGE DISPLAY Displays Distance from Sensor to Target (Does not affect 4-20mA output or Relay)

NORMAL MODE

CALIBRATION UNITS SELECTION Press Ç to select inches, cm or percent

4mA and 20mA CALIBRATION Wait for the Numeric value then press ÇÈ or decrease. Value displayed is Distance from the Sensor in inches or cm.

RELAY OPERATION CHOICE Press Ç to select:

1 = Level Alarm 2 = Level + Echo Loss

RELAY SET POINTS Wait for Numeric value and press adjust Set Points (in Units selected, or

DAMPING (0 - 20 SECS. ) Press to AdjustÇ

3 = Echo Loss Only 4 = Temperature Alarm 5=Off

or to increase

for Next FunctionWaitfor4=or20=andPress

ÇÈand to

C).°

Sb=n

ELC 1

-C.S-

YES?

YES

Press Ç to select "Y" (Yes) only when the instrument is equipped with an optional Intrinsic Safety Barrier for sensor mounting in hazardous locations. This setting compensates for the electrical characteristics of an Intrinsic Safety Barrier.

ECHO LOSS CHOICE (4-20mA OUTPUT) Press to Select action when echo lost

1 - Hold 2 = Go to 4mA 3 = Go to 20mA

0.0OPSL

OUTPUT SIMULATION Wait for Numeric value and press or to Increase or Decrease Simulated Output (Automatically returns to NORMAL mode in 10 min.).

STORE YES? Press to Store Calibration (Displays -C.S.-)Ç Press Calibration Not StoredÈ

ÇÈ

Page 7

NORMAL MODE

LIT25 Level Indicating Transmitter

Flashes when good echoes are received

ECHO

LEVEL CM

When Calibrated for 20mA at Maximum Range

4mA =

20mA =

When Calibrated for 20mA at Minimum Range (Maximum Level)

CALIBRATION UNITS SELECTION

Press  from NORMAL mode, Display will show:

RELAY

ON - Relay energized OFF - Relay de-energized

20mA =

4mA =

PERCENT INCHES CM

4-20mA

CALIBRATION

PERCENT

INCHES

Page 8

Echo light keeps flashing to show instrument still operating

4mA CALIBRATION

LIT25 Level Indicating Transmitter

The Display will alternate between

20 =

MAXIMUM VALUES: 600 inches / 1524 cm MINIMUM VALUES: 8 inches / 20.3 cm MINIMUM SPAN (distance between 4= and 20=): 2" (5 cm)

and

761.9

761.8

761.7

every 3 seconds.

762.1

762.2

762.3

20mA CALIBRATION

Wait for 4 = and press  to display 20 =. Now follow the same procedure to calibrate the distance from the Sensor for 20mA output.

Remember that the LIT25 automatically reads LEVEL if 20 = is set to the minimum distance from the sensor. Calibrate in RANGE mode by setting 20= to the maximum distance from the sensor.

20mA =

4mA =

LEVEL

(Inventory)

12"/30.5cm

2"/5cm

RANGE

(Outage)

12"/30.5cm

4mA =

2"/5cm

20mA =

Page 9

SIGNAL RELAY

LIT25 Level Indicating Transmitter

The LIT25 Relay is rated 1ampere, 24VDC, 120/240VAC. It includes an internally connected noise suppressor or “snubber” with 25K ohms impedance. Very low AC electrical loads may appear to “leak” current. Maximum leakage is: 10mA @ 110VAC 20mA @ 220VAC No leakage will be measured with DC electrical loads.

RELAY OPERATION CHOICE

The LIT25’s Signal Relay can be configured to operate as: ROC1 = Level Alarm

ROC2 = Level + Echo Loss Alarm ROC3 = Echo Loss only Alarm ROC4 = Temperature Alarm (measured at the Sensor)

ROC = 3,5

ROC = 1,2,4

ROC5 = OFF (de-energize) at all times Press  to select the ROC.

RELAY CALIBRATION

ROC1 (Level Alarm)

INTERNALLY CONNECTED SUPPRESSOR

RELAY (1 AMP)

ROC2

ROC3

ROC4

The Display will alternate between

and

721.3

721.2

721.1

every 3 seconds

0.0

0.1

0.2

ROC2 (Level + Echo Loss Alarm) - Relay will be energized when the Relay ON set point is

reached.

or if the echo is lost (no echoes for more than 20 seconds). ROC4 (Temperature Alarm) - Minimum Set Point -40°C (= -40°F)

- Maximum Set Point 100°C (= 212°F) NOTE: The Set Points are displayed in the units selected at CALU. Two different Set Points (RON and

ROFF) allows a Relay “deadband” for Pump Control and to avoid Relay chatter.

Page 10

LIT25 Level Indicating Transmitter

Example of Relay Calibration Span (Max Level) = 184 inches

RON in inches = 150 ROFF in inches = 30

RON

R OFF

DAMPING

Normal Setting: DP10 Fast Response (up to ½ inch /13 mm level change per

second): DP5 or less Slow Response (turbulence) DP15 or more NOTE: Damping Time (in seconds) is the response time to

indicate a new target. Longer Damping Times also reject false targets like agitators, splashing etc.

SENSOR

30"

150"

SPAN

DP11

DP12

20mA = 16"

4mA = 200"

20 SECS. MAXIMUM

INTRINSIC SAFETY BARRIER

Press  to select "Y" (Yes) only when the instrument is equipped with an optional Intrinsic Safety Barrier for sensor mounting in hazardous locations. This setting compensates for the electrical characteristics of an Intrinsic Safety Barrier.

ECHO LOSS RESPONSE

If no echoes are received for 20 seconds or longer the 4-20mA output can be programmed to respond as follows:

ELC1 = Hold last reading ELC2 = Output 4mA ELC3 = Output 20mA

When one valid echo is received the LIT25 will resume normal operation.

ELC2

ELC3

Page 11

OUTPUT SIMULATION MODE

LIT25 Level Indicating Transmitter

The Display will alternate between

and

721.4

721.3

0.1

0.2

The Output Simulation function controls the digital display 4-20mA output and control relay. Use it to simplify calibration of remote 4-20mA devices such as chart recorders or remote displays, and to test relay set-points.

Press  and  to simulate levels from 0% to 100% of your calibrated span. Increments will automatically accelerate when  or  is continuously pressed.

STORE (SAVE) CALIBRATION

RETURN TO NORMAL MODE

CALIBRATION STORED

Press  to Store calibration (LIT will display -C.S-). Calibration is stored in non-volatile memory (even through power interruptions).

Press  to return to NORMAL mode without storing any changes.

Page 12

LIT25 Level Indicating Transmitter

RANGE DISPLAY

From Normal Mode press  Displays distance from the Sensor to Target.

RANGE CM

Use to check measurements during calibration.

(RANGE and UNITS flash.)

RETURN TO NORMAL MODE

Note: The LIT25 will not detect targets beyond the user entered maximum range.

TEMPERATURE DISPLAY

Displays temperature in degrees Centigrade measured at the Sensor.

TEMPERATURE LOG

Displays maximum temperature in degrees Centigrade measured at the Sensor.

From normal Temperature display, press and hold  then .

RETURN TO NORMAL MODE

Page 13

LIT25 Level Indicating Transmitter

ENCLOSURE INSTALLATION

Locate the enclosure within 500 ft (150 m) of the sensor. It can be wall mounted with four mounting screws (supplied) or panel mounted with Option PM Panel Mounting Kit from Greyline Instruments. Avoid mounting the enclosure in direct sunlight to protect the electronics from damage due to overheating and condensation. Seal conduit entries to prevent moisture from entering enclosure.

NEMA4X (IP66) WITH CLEAR COVER

COVER

1. Remove enclosure cover.

ENCLOSURE

MOUNTING

HOLES

2. Insert #6 screws through the four enclosure mounting holes to secure enclosure to wall or mounting stand.

3. Replace Cover

ENCLOSURE

END VIEW

An additional conduit hole can be cut in the end of the enclosure if required. Use a screwdriver to "knock out" additional holes.

Note:

1. This non-metallic enclosure does not automatically provide grounding between conduit connections. Grounding must be provided as part of the installation. Ground in accordance with the requirements of the National Electrical Code. System grounding is provided by connecting grounding wires from all conduit entries to the steel mounting plate or another point which provides continuity.

2. Water tight “O” ring seals must be used if cable strain-reliefs are used.

Page 14

SENSOR MOUNTING LOCATION

LIT25 Level Indicating Transmitter

PREFERRED SENSOR

LOCATION

1 FT HORIZONTAL FROM SIDEWALL FOR EVERY 10 FT VERTICAL

NOTE: 2 FT FOR EVERY 10 FT DEPTH ON APPLICATIONS WITH ROUGH SIDEWALLS, LADDERS, REINFORCING RINGS ETC.

SENSOR MOUNTING

SENSOR FACE MUST BE HORIZONTAL ±1°

6" SCHEDULE 40 PIPE IF EXTENSION REQUIRED

MAX. LIQUID LEVEL

Each sensor is equipped with a ¾ inch “isolation coupling” which MUST be used in your installation. A threaded nipple or length of conduit may be used to position the sensor at the desired height.

The sensor should be hand-tightened (like a light bulb) by turning the sensor stem only. DO NOT use a wrench and do not over tighten. DO NOT clamp the sensor below the isolation coupling.

The standard PZ32T Sensor must be mounted 12" / 30.48 cm or more above the maximum liquid level. (Optional PZ12 sensor must be 8" / 20.3 cm above maximum level and optional PZ52T sensor must be 16" / 406 mm above maximum level.)

Page 15

SENSOR MOUNTING

Notes:

1. Use the ¾" NPT "Isolation Coupling" supplied and

only. Do not clamp sensor

tighten

body or stem.

2. Locate the sensor 1 ft (30 cm) from

the sidewall or obstruction for every

10 ft (3 m) depth.

3. mount in direct sunlight.

Do not

4. Extend sensor cable up to 500 ft (150 m) with RG62AU coaxial only.

CROSS BAR MOUNT

CLAMP

DO NOT

CLAMP IN

THIS AREA

hand

3/4" CONDUIT

ISOLATION COUPLING (SUPPLIED) MUST BE USED

FLANGE MOUNT

4" OR 6" BLIND FLANGE

TAPPED ¾" NPT

¾" NPT

NIPPLE

DO NOT

CLAMP IN

THIS AREA

LIT25 Level Indicating Transmitter

FLEXIBLE CONDUIT

JUNCTION

BOX

(OPTION JB)

ISOLATION COUPLING (SUPPLIED) MUST BE USED

CONDUIT MOUNT

3/4" CONDUIT

STANDPIPE LENGTH AS SHORT AS POSSIBLE STANDPIPE DIAMETER AS LARGE AS POSSIBLE

TYPICAL STANDPIPE: 4” / 100 mm DIAMETER 12” / 300 mm LENGTH

NARROW DIAMETER STANDPIPES (<4” / 100 mm) MAY AFFECT ACCURACY OF READING

STAND PIPE MOUNT

SMOOTH

GRIND OR FILE

PIPE EDGE

DO NOT

CLAMP IN

THIS AREA

3/4" NPT

DO NOT

CLAMP IN

THIS AREA

ISOLATION COUPLING (SUPPLIED) MUST BE USED

ANGLE MOUNT

NIPPLE

ISOLATION COUPLING (SUPPLIED) MUST BE USED

Page 16

LIT25 Level Indicating Transmitter

SENSOR MOUNTING/LOCATION

- Tank Level/Inventory Applications

Each LIT25 Level Transmitter includes a non-contacting ultrasonic sensor. The sensor must be installed in a position to obtain unobstructed echoes from the liquid or material being measured.

Mount the sensor away from pipes, ladders, or structural members which might cause continuous false echoes.

SOLIDS AND POWDERS

SENSOR MOUNTED AWAY FROM MATERIAL PATH. COARSE SOLIDS WILL USUALLY RETURN AN ECHO EVEN IF AT AN ANGLE

BAD

GOOD

90°

FINE POWDERS MAY NEED SENSOR TILTED NORMAL TO SURFACE TO OBTAIN GOOD ECHOES

Page 17

ERROR/WARNING MESSAGES

Instrument has detected Sensor connections/cable open.

Instrument has detected Sensor connections/cable short.

No valid echoes for 10 seconds.

No valid echoes for 20 seconds. See Troubleshooting (F).

LIT25 Level Indicating Transmitter

Illegal Span. Distance between 20 = and 4 = must be greater than 2" (5 cm)

Indicates target is further than the calibrated Maximum Range.

Indicates that the LIT25 has experienced electrical interference strong enough to corrupt the memory. The LIT25 must be reset and recalibrated. Reset Procedure 1 procedure: Press and hold

Always displayed at power-up (x.x indicates Software version). Otherwise indicates instrument has reset automatically. See Troubleshooting (C,D,E).

: Reset will clear all memory. LIT25 will need recalibration after this

and until the LIT25 displays----.ÇÈ

Indicates that the target is above the calibrated maximum level (too close to the Sensor).

Page 18

LIT25 Level Indicating Transmitter

FIELD TROUBLESHOOTING

SYMPTOMS CHECK Level Display - full scale

- zero

- erratic - random

- higher than actual

- fluctuating

A B C D E

ECHO LOSS prompt - flashing F

Calibration Non-Linear H

EEEE - memory corruption

SYMPTOMS

FAULTS SOLUTIONS

Unit “See’s Wrong Target Due To: A - sensor cover not removed

- remove protective cover after installation

A,C,D,F - sensor not aimed correctly A,D,F - dust/dirt buildup on sensor

- clean carefully (do not scratch sensor face)

- lower sensor

A,D,F - condensation on sensor

- insulate sensor mounting location

- wipe sensor face and body with Rain-X

A,D

- sensor mounting stand pipe

- too long/ - too narrow

- dirty/ - gasket intruding

- lower Sensor below stand pipe intrusion

D,E - agitator, strong turbulence - increase Damping C - material filling through sensor beam - increase Damping

Unit Picks-Up Acoustic Interference Due To:

A,C - noise from high pressure fill - install submerged fill pipe A,D - sensor coupling over tightened - hand tighten only (like a light bulb) A,D - sensor coupling not used - use isolation coupling supplied

- other ultrasonic sensor in close proximity

- separate Sensors

Electrical Interference:

C - sensor cable connections reversed C,D - through Sensor cable - use properly grounded metal conduit

C,D - through 4-20mA output cable

- sensor cable and/or junction not insulated

- use metal Junction Box

- use shield twisted pair (shield to AC ground)

Page 19

LIT25 Level Indicating Transmitter

SYMPTOMS FAULTS SOLUTIONS

C,D

C,D,E

Wiring Problems Due to Sensor Cable:

C,F - open circuit

F - short circuit F - too long (max. 500 ft, 150 m) C

C A - extended with wrong type of wire - use only RG62AU coaxial

C - close to high voltage/large motors

Non-Linearity Due To:

H - vapour - calibrate in-situ B,H - zero not set accurately - recalibrate

H - full scale not set accurately

- wiring or installation close to variable speed drive or inverter

- AC/Chassis Ground missing on instrument power connections

- relay sparking produces EMI interference

- instrument installed in the same panel with high voltage/large motor controls

- bundled/run in conduit with power cable

- sensor ground shorted to conduit/enclosure

- follow VSD manufacturer’s instructions for Drive grounding wiring and shielding

- install adequate Ground

- use snubber across Relay contacts (option SNUB)

- do not exceed 1 ampere load

- relocate or use metal enclosure

- check connections/continuity (8850 to 12700 ohms max./-30°C to +70°C )

- check connections/continuity (8850 ohms min.)

- insulate

- Note: Minimum Range must be  12” (30.5cm)

Page 20

LIT25 Level Indicating Transmitter

PZxx Series Sensors Troubleshooting

Resistance measured across the coaxial cable ends (between the shield and center wire) by m ultimeter indicates ambient temperature.

Resistance vs. Temperature

Page 21

LIT25 Level Indicating Transmitter

APPLICATIONS HOTLINE

For applications assistance, advice or information on any Greyline Instrument contact your Sales Representative, write to Greyline or phone the Applications Hotline below:

United States: Tel: 315-788-9500 Fax: 315-764-0419 Canada: Tel: 613-938-8956 Fax: 613-938-4857 Toll Free: 888-473-9546 Email: info@greyline.com Web Site: www.greyline.com

Greyline Instruments Inc.

Canada USA: 16456 Sixsmith Drive 105 Water Street Long Sault, Ont. K0C 1P0 Massena, NY 13662

Page 22

LIT25 Level Indicating Transmitter

PRODUCT RETURN PROCEDURE

Instruments may be returned to Greyline for service or warranty repair.

1) Obtain an RMA Number from Greyline -

Before shipping a product to the factory please contact Greyline by telephone, fax or email to obtain

an RMA number (Returned Merchandise Authorization). This ensures fast service and correct billing or credit.

When you contact Greyline please have the following information available:

1. Model number / Software Version

2. Serial number

3. Date of Purchase

4. Reason for return (description of fault or modification required)

5. Your name, company name, address and phone number

2) Clean the Sensor/Product -

Important: unclean products will not be serviced and will be returned to the sender at their

expense.

1. Rinse sensor and cable to remove debris.

2. If the sensor has been exposed to sewage, immerse both sensor and cable in a solution of 1 part household bleach (Javex, Clorox etc.) to 20 parts water for 5 minutes. Important: do not immerse open end of sensor cable.

3. Dry with paper towels and pack sensor and cable in a sealed plastic bag.

4. Wipe the outside of the enclosure to remove dirt or deposits.

5. Return to Greyline for service.

3) Ship to Greyline -

After obtaining an RMA number please ship the product to the appropriate address below:

Canadian and International USA Customers: Customers:

Greyline Instruments Inc. Greyline Instruments Inc. 16456 Sixsmith Drive 204 150th Avenue Long Sault, Ont. K0C 1P0 Madeira Beach, FL 33708

RMA# RMA#

Page 23

LIMITED WARRANTY

_____________________________________

Greyline Instruments warrants, to the original purchaser, its products to be free from defects in material and workmanship for a period of one year from date of invoice. Greyline will replace or repair, free of charge, any Greyline product if it has been proven to be defective within the warranty period. This warranty does not cover any expenses incurred in the removal and re-installation of the product.

LIT25 Level Indicating Transmitter

If a product manufactured by Greyline should prove defective within the first year, return it freight prepaid to Greyline Instruments along with a copy of your invoice.

This warranty does not cover damages due to improper installation or handling, acts of nature, or unauthorized service. Modifications to or tampering with any part shall void this warranty. This warranty does not cover any equipment used in connection with the product or consequential damages due to a defect in the product.

All implied warranties are limited to the duration of this warranty. This is the complete warranty by Greyline and no other warranty is valid against Greyline. Some states do not allow limitations on how long an implied warranty lasts or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Greyline Instruments Inc.

Page 24

LIT25 Level Indicating Transmitter

APPENDIX A - OPTIONS and ACCESSORIES

XC - Extra Sensor Cable up to 500 ft (152 m) length JB - Sensor Cable Junction Box ISB - Intrinsic Safety Barrier for Sensor and Cable installation in hazardous-rated locations

(factory-installed option/larger enclosure used) 24VDC - 24VDC Power Input (factory-installed option) 12VDC - 12VDC Power Input (factory-installed option) PM2 - Enclosure Panel Mount

EXTRA SENSOR CABLE - OPTION XC

Each Greyline level instrument includes 25 ft. (7.6 m) RG62AU coaxial cable. Additional RG62AU coaxial cable and Cable Junction Box (Option JB2X) may be installed to extend cable up to 500 ft (152m) as required during installation. No adjustment is required when the sensor cable is extended or shortened. Use only RG62AU (or RG62U) coaxial cable which is available from Greyline Instruments or your local distributor. Nominal impedance of RG62AU cable is 93 ohms.

Extended sensor cable maybe installed in metal or plastic conduit. Recommended installation with a junction box is illustrated below:

CORE

SHIELD

EXTENDED SENSOR CABLE TO ELECTRONICS ENCLOSURE

- MAX. TOTALCABLE LENGTH 500 ft (152m) RG62AU coaxial

- CONDUIT RECOMMENDED FOR MECHANICAL PROTECTION

TO SENSOR RG62AU COAXIAL

CORE

SHIELD

Page 25

LIT25 Level Indicating Transmitter

JUNCTION BOX - OPTION JB2X

NEMA4X (IP66) polycarbonate Junction Box with terminal strips is available from Greyline Instruments. Includes compression fittings for watertight coaxial cable entries.

90 mm / 3.54"

57 mm / 2.24"

3.9 mm

0.15" MOUNTING HOLES (X4)

JB2X

DIMENSIONS

TOP VIEW

90 mm / 3.54"

60 mm / 2.36"

END VIEW

EXTENDED SENSOR CABLE INSTALLATION IN MANHOLE

MANHOLE COVER

JBX

XC EXTENDED SENSOR CABLE UP TO 500 ft 152 m

CONDUITTO ELECTRONICS

ULTRASONIC SENSOR

Wetwell, Sump or Pump Station

Page 26

LIT25 Level Indicating Transmitter

SENSOR INTRINSIC SAFETY - OPTION ISB

Mounting

6.18“

157mm

SENSOR MODELS PZ32T/PZ32TE (with built-in temperature compensation)

When connected through an Intrinsic Safety Barrier, the Greyline PZ32T and PZ32TE sensors are CSA certified for installation in a hazardous location rated:

Mounting

6.18“

157mm

LIT25

LEVEL INDICATINGTRANSMITTER

FUSE

Class I, Groups C,D Class II, Groups E,F and G Class III

6.89“

175mm

Intrinsic Safety Barriers may be ordered with the Greyline

END

VIEW

instrument and are supplied mounted in the Greyline instrument enclosure. A larger enclosure is used.

Replacement barrier fuses (Part No. ISB-011239) may be

ELECTRONICS ENCLOSURE

purchased separately. Barriers must be installed in the sensor cable between the safe and hazardous locations, and must be mounted in either the safe or Div.2 area. Barriers may be plate, busbar or rail mounted.

6.89“ 175mm

ISB INTRINSIC SAFETY BARRIER

2.95“

75mm

Intrinsic Safety Barrier Specifications: Certified, rated 17.5V max, 95 ohms min.(Recommended: Stahl Model 9001/02-175-200-10).

CONNECTIONS (Stahl Model 9001/02-175-200-10)

HAZARDOUS LOCATION CLASS I, GROUPS C,D, CLASS II, GROUPS E,F,G CLASS III

SENSOR

NON-HAZARDOUS LOCATION

GREYLINE

INSTRUMENT

SEE

NOTE

: BARRIER-EQUIPPED UNITS ARE FACTORY-WIRED WITH GROUND THROUGH THE INSTRUMENT CHASSIS. POWER INPUT GROUND MUST BE GOOD GROUND (< 1 Ohm) WITH A 12AWG CONDUCTOR

REPLACEMENT FUSE ASSEMBLY ORDER PART number ISB-011239 (160mA)

CONNECTED TO A

SAFETY BARRIER

FUSE

TDR(WHITE)

SHIELD (GREEN)

INTRINSIC

Page 27

LIT25 Level Indicating Transmitter

24VDC POWER INPUT OPTION

LIT25 Level Indicating Transmitters may be ordered factory-configured for 24VDC power input.

12VDC POWER INPUT OPTION

LIT25 Level Indicating Transmitters may be ordered factory-configured for 12VDC power input.

QUICK BENCH TEST:

Connect Sensor as shown below, then Power. When properly connected a soft clicking can be heard from the sensor and figures will show on the LCD display. Test operation of the LIT25 by holding the sensor steadily and aiming at a flat, stable target 12 to 28" (305 to 711 mm) away from the end of the sensor. Allow a few seconds for the LIT25 to lock onto the target before displaying its distance. The LIT25 will now display Range (Distance) in inches or cm.

CONNECTIONS: POWER INPUT: Connect only 24VDC/0.5 Amps (or 12VDC) to the + and - terminals. The Power

Input GND must be connected to the nearest good Ground pole. Power Consumption is 4.32 W continuous.

14 AWG

MAX

OPTIONAL 24VDC

or OPTIONAL 12VDC

POWER INPUT

GND

24VDC

IMPORTANT: MUST CONNECT TO A GOOD GROUND (<1 Ohm) WITH 12 AWG CONDUCTOR

Page 28

8.40"

213.4 mm

Option PM2 Enclosure Panel Mount

6.43"

163.3 mm

5-3/16"

132 mm

7-3/16"

182 mm

LIT25 Level Indicating Transmitter

HOLE CENTRES

5.4" / 137.2 mm

INSTRUCTIONS Mark Panel using Flange as a Template. Cut Panel outside the line.

P A N E L C U T - O U T

PANEL CUT-OUT

HOLE CENTRES

5.68" / 144.3 mm

FLANGE

QTY 1 INCLUDED MATERIAL: 0.062 ALUMINUM FINISH: CLEAR IRIDITE

Z-BRACKET

QTY 2 INCLUDED WITH MOUNTING SCREWS

FLANGE

PANEL

1.75"

44.45 mm

INSTALLATION

INSTRUMENT ENCLOSURE

NEMA4X (IP67)

Page 29

Z-BRACKET

LIT25 Level Indicating Transmitter

ENCLOSURE SUNCREEN - Option SCR

Do not mount instrument electronics in direct sunlight. Overheating will reduce the life of electronic components and condensate may form during the heat/cool cycles and cause electrical shorts.

11" / 280 mm

Note:

Exposure to direct sunlight can cause overheating and moisture condensation which will reduce the operating life of electronics.

Protect Instruments from direct sunlight with this iridite finished aluminum sun screen (Greyline Option SCR).

Seal conduit entries with caulking compound to further reduce moisture condensation.

SENSOR SUNSCREEN - OPTION PZS

11"

280 mm

5" 127 mm

Page 30

LIT25 Level Indicating Transmitter

APPENDIX B - APPLICATIONS BACKGROUND

Conditions in the tank where the ultrasonic sensor is installed can affect the performance, range and accuracy of the system. The following notes are for general reference. Contact Greyline Instruments or your local representative for specific information on your application.

FOAM - Solid or dense surfaces such as a smooth liquid surface will give the best echoes in an ultrasonic level measuring system. Foam acts as a sound insulator and may eliminate, or reduce the strength of an echo. Measurement range may be reduced in a system where foam is present. Ultrasonics are not recommended where thick dense foam is continually present. Intermittent or thin layers of light foam (1/8 in. or less) can generally be disregarded. Use a stilling well in open channel applications.

LIQUIDS - The LIT25 is ideal to monitor tank liquid level or inventory. Caustic, corrosive or very viscous liquids can be monitored without contacting the liquid.

SOLIDS - The LIT25 will measure most granular material and powders as well as liquids. Powders will not generally provide the same echo strength as liquids. Therefore maximum expected range should be reduced to approximately 20 feet (6 m) for powders. There are many exceptions to this rule and installation of a test system is recommended when in doubt.

DUST - Any obstructions to the sound will affect performance of the system. In silo’s where heavy concentrations of dust are expected ultrasonics may not work. Where moderate dust is encountered care should be taken to mount the sensor in a position where dust accumulation will be minimized and where the sensor can be cleaned if necessary.

SENSOR TEMPERATURE - The standard sensor model PZ32T supplied with each Level Indicating Transmitter includes a built-in temperature sensor. The LIT25 automatically compensates for temperature fluctuations to retain high accuracy. Note the operating temperature ranges listed in the product specifications section. Do not exceed the sensor temperature ratings or damage may occur.

ELECTRONICS TEMPERATURE - Note operating temperature ranges listed in the product specifications. Temperatures higher than the maximum shown can reduce the operating life of the electronics. Moisture condensation from those temperatures below the range shown can also damage electronics components.

NOISE - Because the LIT25’s sensor operates at high sound frequency, regular process noise or vibration will not affect the system. Ultrasonic Sensors installed in close proximity to one another in the same tank may “cross-talk” and should be relocated.

VAPOUR - May affect operation. Severe vapour stratification can cause false echoes. Variable vapour cannot be compensated.

Page 31

LIT25 Level Indicating Transmitter

CHEMICAL COMPATIBILITY - The LIT25 Sensor is constructed of very durable materials with broad compatibilities. Tank contents should be checked for their compatibility with PVC. An all-teflon sensor is available for corrosive applications.

Page 32

LIT25 Level Indicating Transmitter

CONVERSION GUIDE

FROM TO MULTIPLY BY US GALLONS CUBIC FEET 0.1337 US GALLONS IMPERIAL GALS 0.8327 US GALLONS LITRES 3.785 US GALLONS CUBIC METERS 0.003785 LITRES/SEC GPM 15.85 LITRES CUBIC METERS 0.001 BARRELS US GALLONS 42 BARRELS IMPERIAL GALS 34.9726 BARRELS LITRES 158.9886 INCHES MM 25.4 DEGREES F DEGREES C (°F-32) x 0.556 POUNDS KILOGRAMS 0.453 PSI BAR 0.0676 FOOT² METER² 0.0929

VOLUME CALCULATION FOR ROUND TANKS: 3.142 x R² x H R = TANK RADIUS (½ TANK DIAMETER) H = TANK HEIGHT

Page 33

LIT25 Level Indicating Transmitter

SPECIFICATIONS

Mounting

4.21"

107 mm

Electronics Enclosure: NEMA4X (IP 66), watertight and dust

tight, fiberglass with clear, shatterproof Lexan cover

Accuracy: ±0.25% of Range or 2 mm (0.08"),

whichever is greater, Repeatability:

0.1%, Linearity: 0.1% Display: ¾" / 19 mm high, 4 digit LCD Programming: 2-button Menu selection. Calibration

Mounting

6.18"

157mm

LIT25

LEVEL INDICATING TRANSMITTER

parameters are permanent when Stored (even through power

interruptions) Power Input: 100-130VAC 50/60Hz, (6 W max.) Optional: 200-250VAC

4.92"

125 mm

50/60Hz, (6 W max.) Optional: 24VDC, (4.32 W max.) Fuse: internal, rated 0.5A Output: Isolated 4-20mA, 1000 ohm load

maximum Signal Relay: Qty 1, rated 120/240VAC or 24VDC,

END VIEW

1 ampere Temperature Compensation: Automatic, temperature probe built in

to level Sensor Electrical Surge Protection: Sensor, 4-20mA, AC power input Operating Temperature: -13 to 140°F (-25 to 60°C) (Electronics)

6.89"

175 mm

2.95"

75 mm

Standard Sensor PZ32T

Maximum Range: 32 ft. (10 m) Deadband (blanking): Programmable, minimum 12” (305 mm) Beam Angle: 8° Operating Frequency: 42 KHz Exposed Materials: PVC and Teflon Operating Temperature: - 40° to 150°F (-40° to 65°C) Operating Pressure: 20 psi (1.35 Bar) maximum Mounting: ¾” NPT (PVC isolation coupling

supplied) Sensor Cable: RG62AU coaxial, 25 ft. (7.6 m)

standard length Maximum Cable Length: 500 ft. (152 m) RG62AU coaxial Hazardous Rating: with optional Intrinsic Safet y Barrier:

CSA, Class I,II,III, Div. I,II, Groups

C,D,E,F,G

Page 34

3/4"

NPT

ISOLATION COUPLING

(SUPPLIED)

3/4"

NPT

SIDE VIEW

END

VIEW

PVC

1-3/4 "

44.5mm

TEFLON

TEF

25' (7.6 m) RG62AU COAXIAL CABLE

3-7/8 " 98mm

(127 mm)

OVERALL

LIT25 Level Indicating Transmitter

Optional Sensor PZ32TE

Maximum Range: 32 ft. (10m) Deadband (blanking): Programmable, minimum 12” (305

mm) Beam Angle: 8° Operating Frequency: 42 KHz Exposed Materials: Teflon Operating Temperature: -40° to 170°F (-40° to 76°C) Operating Pressure: 20 psi (1.35 Bar) maximum Mounting: ¾” NPT (Teflon isolation coupling

supplied) Sensor Cable: RG62AU coaxial, 25 ft. (7.6 m)

standard length Maximum Cable Length: 500 ft. (152 m) RG62AU coaxial Hazardous Rating: with optional Intrinsic Safet y Barrier:

CSA, Class I,II,III, Div. I,II, Groups

C,D,E,F,G,

3/4"

NPT

TEFLON

ISOLATION

COUPLING

(SUPPLIED)

3/4" NPT

SIDE VIEW

END

VIEW

TEFLON

1-3/4 "

44.5mm

TEFLON

TEF

25' (7.6 m) RG62AU COAXIAL CABLE

3-7/8 " 98mm

(127 mm)

OVERALL

Optional PZ15

Maximum Range: 15 ft (4.57m) Minimum Range (Deadband): 8" (203.2 mm) Operating Frequency: 92 KHz Beam Angle: 8° Operating Temperature: -40° to 150° (-40° to 65°C) Temperature Compensation: Automatic, continuous Max. Operating Pressure: 20 psi (1.35 bar) Sensor Face: PVC Sensor Body: PVC Mounting: ¾" NPT Cable Length: 25 ft. (7.6 m) continuous

RG62AU coaxial. Optional 50 ft.

(15 m) continuous Max. Cable Length: 500 ft. (152 m) RG62AU coaxial

(splice) Hazardous Rating: CSA rated Intrinsically Safe

Class I, Groups C,D, Class II,

Groups E,F,G with Optional

Intrinsic Safety Barrier.

~4.25"

(108 mm)

OVERALL

3.125"

79.4 mm

25 ft (7.6 m) RG62AU COAXIAL CABLE (50 ft 15 m OR 100 ft 30 m )OPTIONAL

3/4“ NPT

3/4" NPT

2.1" (53 mm)

ISOLATION COUPLING (SUPPLIED)

1.125"

(28.6 mm)

Page 35

LIT25 Level Indicating Transmitter

Optional PZ12T_F

Maximum Range: 12 ft (3.66 m) Minimum Range (Deadband): 8"(203.2 mm) Operating Frequency: 92 KHz Beam Angle: 8° Operating Temperature: -40° to 150° (-40° to 65°C) Temperature Compensation: Automatic, continuous Max. Operating Pressure: 20 psi (1.35 bar) Sensor Face: Teflon Sensor Body: PVC Mounting: ¾" NPT Cable Length: 25 ft. (7.6 m) continuous RG62AU coaxial. Optional 50 ft. (15 m)

continuous Max. Cable Length: 500 ft. (152 m) RG62AU coaxial (splice) Hazardous Rating: CSA rated Intrinsically Safe Class I, Groups C,D, Class II, Groups E,F,G

with optional Intrinsic Safety Barrier.

25 ft (7.6 m) RG62AU COAXIAL

CABLE

(50 ft 15 m OPTIONAL)

3/4“ NPT

~ 4.5"

(114 mm)

OVERALL

3.25"

82.5 mm

3/4¾" NPT

TEFLON FACE 0.01" / 0.25mm

BOLT CIRCLE DIAMETER

FLANGE DIAMETER

ISOLATION COUPLING (SUPPLIED)

(25.4 mm)

Page 36

LIT25 Level Indicating Transmitter

Optional PZ34

Maximum Range: 32 ft. (10 m)

25 ft (7.6 m) RG62AU COAXIAL CABLE (50 ft 15 m OPTIONAL)

3/4“ NPT

Minimum Range (Deadband): 16" (406.4 mm) Operating Frequency: 46 KHz Beam Angle: 8º Temperature Compensation: Automatic, continuous

ISOLATION COUPLING (SUPPLIED)

Operating Temperature: -40° to 150ºF (-40° to 65ºC) Maximum Operating Pressure: 20 psi (1.35 Bar) Exposed Materials: PVC Sensor Mounting: ¾” NPT

~ 4.75"

(120 mm)

OVERALL

3/4" NPT

Maximum Cable Length: 500 ft (152 m) Optional Hazardous Rating: CSA rated Intrinsically Safe

Class I, Groups C,D, Class

II, Groups E,F,G with

3.5”

89 mm

1.7”

43.2 mm

optional Intrinsic Safety

Barrier. Note: Max Range reduced to

25 ft (7.8 m) with ISB option.

3.95”

100 mm

Optional PZ34T_F

Maximum Range: 32 ft. (10 m) Minimum Range (Deadband): 16" (406.4 mm) Operating Frequency: 46 KHz Beam Angle: 8º Temperature Compensation: Automatic, continuous Operating Temperature: -40° to 150ºF (-40° to 65ºC) Maximum Operating Pressure: 20 psi (1.35 Bar) Sensor Face: Teflon Sensor Body: PVC (not exposed to tank contents) Cable Length: 25 ft. (7.6 m) continuous RG62AU coaxial Optional 50 ft. (15 m)

continuous Maximum Cable Length: 500 ft (152 m) RG62AU coaxial (splice) Hazardous Rating: CSA rated Intrinsically Safe Class I, Groups C,D, Class II, Groups E,F,G

with optional Intrinsic Safety Barrier.

~ 4.75" (120 mm) OVERALL

3.5"

89 mm

25 ft (7.6 m) RG62AU COAXIAL CABLE (50 ft 15 m OPTIONAL)

3/4“ NPT

3/4” NPT

TEFLON FACE

BOLT CIRCLE DIAMETER

FLANGE DIAMETER

Page 37

ISOLATION COUPLING (SUPPLIED)

(25.4 mm)

LIT25 Level Indicating Transmitter

LIT25 Calibration Record

23c

638.6

RANGE CM

123.4

LEVEL CM

CALU

PERCENT INCHES CM

4 =

20 =

roc1

3, 5 1, 2, 4

r on

PERCENT INCHES CM

SERIAL # _________________

DATE: ____________________

Circle Selected Units and Enter Values in the Blank Spaces

r oFF

dp10

Sb=n

ELC 1

OPSL

-C. S-

YES?

YES

Page 38

Greyline Instruments LIT25 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual