Omega LR31 Specification

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EchoPro

Pulse Radar Liquid Level Transmitter

LR31

Application

The intrinsically safe 26 GHz. pulse radar transmitter provides continuous level measurement up to 98.4’ (30m) with a 4-20 mA analog and HART digital signal output, and is configured via its remote push button display module or HART communicator. The non-contact liquid level sensor is intended for industrial wastewater, municipal storm or sewer lift station, reservoir, river, canal or open channel applications located below or above grade. Select this sensor for challenging process

conditions that may include light surface foam or agitation, small trash

or plant material, wind, condensation or vapor. Each comes with a

32.8’ (10m) cable, mounting bracket and display module. The sensor is designed for bracket mount installation suspended above the liquid

Features

Rugged IP68 sensor enclosure with 304 SS mounting bracket

Configuration via push button display or HART communicator

26 GHz. pulse radar is unaffected by sump process conditions

Wall mounted display with windowed enclosure rated IP67

12” (30cm) dead band enables utilization of the entire sump

LCD displays level in feet or meters with percent of span bar

Optional display mode indicates the echo signal return curve

Self diagnostics with selectable fail-safe signal outputs

Recognition, storage and rejection of false echo signal returns

Lift Stations

Industrial and municipal pump lift stations collect and transfer wastewater or stormwater into treatment. These receptacles are dynamic environments that contain dirt, grease, oil, agitation, sludge, foam, condensation, chemicals or vapor. The LR31 pulse radar sensor is unaffected by such challenging process conditions, and is designed for bracket mount installation, either downhole or above grade based on your needs.

LR31-0021-10-00

Shown

Push Button

Display Module

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2.91"

(73.9mm)

3.70"

(94mm)

1.57"

(40mm)

M20x1.5

0.75"

(19mm)

0.2"

(5mm)

3.70"

(94mm)

3.18"

(80.75mm)

3.70"

(94mm)

3.18"

(80.75mm)

EchoPro

Pulse Radar Liquid Level Transmitter

SENSOR

Range:

Frequency:

Accuracy:

Dead band:

Beam angle:

Supply voltage:

Max consumption:

Signal output:

Signal invert:

Signal fail-safe:

Process temp.:

Temp. comp.:

Pressure:

Enclosure rating:

Encl. material:

Cable type:

Cable length:

Cable jacket mat.:

Process mount:

DI SPL AY

Display type:

Display units:

Display bar:

Display graph:

Configuration:

Enclosure type:

Enclosure rating:

Encl. material:

Conduit entrance:

COMMON

Memory:

Storage temp.:

Classification:

Approvals:

Certification:

Compliance:

12” to 98.4’ (30cm to 30m)

26 GHz.

± 3mm

12” (30cm)

12º

21.6 to 26.4 VDC

22.5 mA

4-20 mA, two-wire, HART 7

4-20 mA, 20-4 mA

3.9 mA, 20.5 mA, 22 mA

F: -40º to 212º

C: -40º to 100º

Automatic

Atmospheric

IP68

Nylon

6-conductor, shielded

32.8’ (10m)

PVC

304 SS bracket or 1” NPT

LCD, dot matrix

Feet and meters

Percent of span

Echo signal curve

Push button, HART 7

Wall mount

IP67

Polycarbonate

(2) 1/2” NPT connectors

Non-volatile

F: -40º to 176º

C: -40º to 80º

Intrinsically safe

ATEX IIG Ex ia II C T6...T3 Ga

IEC Ex ia IIC T6...T3 Ga

CSA Class I, Div 1, Groups A, B, C & D;

Class II, Div 1, Groups E, F & G; (T6...T3);

Class I Zone 0 AEx ia IIC (T6...T3) Ga &

Zone 20 AEx ia IIIC (T76ºC to T146ºC) Da;

Ex ia IIC (T6...T3) Ga & Ex ia IIIC (T76ºC to

T146ºC) Ga

FCC

CE, RoHS

LR31

DimensionsSpeciﬁcations

1.54"

(39mm)

11.02" (280mm)

10mm

Hex

(155.4mm)

6.12"

5.12" (130mm)

1/2" NPT

4.88" (124mm)

1”

NPT

1.18"

(30mm)

Wide

1.22"

(31mm)

3.04"

(77.2mm)

3.18"

(80.8mm)

0.75"

(19mm)

0.75"

(19mm)

Display Front View

3.69"

(93.8mm)

ECHOPRO

12.34

ft SENSOR

ESC

™

1/2" NPT Adapter

Display Side View

3.70"

(94mm)

M20x1.5

1.57"

(40mm)

3.70"

0.16"

(4mm)

2.91"

(73.9mm)

0.2"

(5mm)

NOTES

Includes the sensor, bracket, cable and display.

If you want help in selecting a sensor for your application, please go to our

website and submit a Level Questionnaire. An engineer will review your

requirements and suggest a product solution via email.

Ordering

LR31-0021-10-00

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