LPT-A Analog Transmitter

    Key Features

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    Full featured, analog network or standalone transmitter
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    3-wire VDC or 4-wire VAC power
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    24 volt DC or AC power (nominal)
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    Linear 4 - 20 mA or 0 - 10 volt output signal
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    One SPDT dry contact relay (30 volts, 2 Amps max)
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    Single sensor: available with an internal electrochemical sensor or catalytic for combustibles (internal or external) or solid state for refrigerants or TVOCs (internal or external) sensor
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    LCD display (user selectable, on / off) available with optional heater
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    Audible alarm
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    Standard water / dust tight, corrosion resistant enclosure (drip proof). IP54 rated with optional splash guard installed
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    Auto resetting fuses
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    Automated calibration procedures for non-intrusive applications
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    RoHS compliant package

The LPT-A is an economical, single sensor, analog transmitter available with a wide range of gas sensors and sensor types including electrochemical, solid state, and catalytic. It is a full featured, standalone transmitter that offer three-wire VDC or four-wire VAC power,  jumper selectable 4 - 20 mA or 0 - 10 VDC analog output, standard dry contact relay (2 amps @ 30 V SPDT), automatic thermal resetting fuse, temperature compensation, back lit LCD digital display, and audible alarm, all in a RoHS compliant package.

All models in the LPT series of transmitters come standard with a water / dust tight, corrosion resistant ABS / polycarbonate enclosure with a hinged, secured door. An optional splash guard is also available for water spray or wash down applications. With the splash guard installed, the enclosure is IP54 rated.

Automated calibration and other maintenance procedures are simple and easily performed in the field. For parking garage applications, our proprietary Calibration Extending Firmware (CEF) takes into account the aging of the sensors so that less frequent calibrations are required.
 

LPT and LPT-A Product Overview VideoLPT and LPT-A Product Overview Video

 LPT-A Datasheet Differences between the LPT Series of Transmitters

APPLICATIONS

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    Parking Garages/Car Parks
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    Vehicle Repair Shops
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    Commercial Swimming Pools
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    Ice Arenas
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    Ice Cleaning Machine Rooms
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    Manufacturing Plants
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    Maintenance Facilities
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    ... and many more

Gas Types

Ammonia (NH3)
Carbon Monoxide (CO)
Combustible Gas (catalytic)
Chlorine (Cl2)
Chlorine Dioxide (ClO2)
Ethylene (C2H4)
Ethylene Oxide (C2H4O)
Formaldehyde (CH2O)
Fluorine (F2)
Hydrogen (H2)
Hydrogen Chloride (HCl)
Hydrogen Cyanide (HCN)
Hydrogen Fluoride (HF)
Hydrogen Sulphide (H2S)
Nitrogen Dioxide (NO2)
Nitric Oxide (NO)
Oxygen (O2)
Ozone (O3)
Phosphine (PH3)
Refrigerants (R22, R134A, R401A, R402A, R404A, R407C, R410A, R422A, R422D, R438A, R507A)
Silane (SiH4)
Sulphur Dioxide (SO2)
TVOCs (solid state)

Sensors


Mechanical

Enclosure: ABS / Polycarbonate, IP54 rated with splash guard installed. Copper coated interior to reduce RF interference.
Weight: 400 g (14 oz)
Size: 5.0” x 5.0” x 2.4” (127 mm x 127 mm x 60.96 mm)
Display Border Colour: Grey

Electrical

Power Requirement: 3-wire mode: 16 – 30 VDC, 3 W, Class 2
4-wire mode: 12 – 27 VAC, 50-60 Hz, 3 VA, Class 2
Wiring:

VDC (or ground referenced AC) three conductor shielded 18 awg stranded within conduit


VAC four conductor shielded 18 awg stranded within conduit

Fuses: Thermal, resetting

Input / Output

Outputs: Linear 4 - 20 mA
Maximum 216 Ω load (wiring plus termination resistor) @ 12 VDC
Maximum 316 Ω load (wiring plus termination resistor) @ 12 VAC

Voltage 0 - 10 volt
Minimum 1k ohm load

User Interface

Display: Graphic LCD, grey border
Magnetic Sensors:
Using a magnetic wand, initiate calibration without opening the enclosure


 

Environmental

Operating Temperature: -20°C to 40°C (-4°F to 104°F)

NOTE: Low temperature optional available to -40°C (-40°F).
Humidity: 15 - 90% RH non-condensing


Note: Measurements above are sensor dependent.

Certifications

Conforms to: CSA-C22.2 No. 205-12, UL508 (Edition 17):2007
Conforms to: EMC Directive 2004/108/EC
                        EN 50270:2006, Type 1, EN61010
Conforms to:  FCC. 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 interference received, including interference that may cause undesired operation.

More Brochures

Product Specifications

Application Brochures

Ice Arena Application Brochures
Ice Arena ApplicationIce Arena Application (QCC + LPT-A + DCC)
Ice Arena ApplicationIce Arena Application (QCC + LPT-A-NH3 + LPT-A-C3H8 +DCC-E-TCO-NO2)

Swimming Pool Application Brochures
Indoor Pool ApplicationCommercial Indoor Swimming Pool Application (DCC + LPT-A and QCC + LPT-A)

Hotel Application Brochures
Hotel Room Application BrochureAir Conditioned Hotel Room Application (LPT-A + ESH dongle)

Winery Application Brochures
Fermentation Room Application BrochureFermentation Room Application (QCC + LPT-A + AST-IS18)

Single Chiller Room Application Brochures
 Single Chiller Room Application BrochureSingle Chiller Room Application (LPT-A + ESH-A)

Double Chiller Room Application Brochures
 Double Chiller Room Application BrochureDouble Chiller Room Application (QCC + LPT-A)

Cold Storage or Freezer Room Application Brochures
 Cold Storage Room Application BrochureCold Storage / Freezer Room Application (QCC + LPT-A)

Drawings

Software


Sensor Specification


Engineering Specification Samples

DataSheets

Operation Manual

Part Numbers

Description Code
Single channel, no internal sensor (set up to accept an ESH-A remote sensor), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-R
Electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-NH3
Electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, sensor CEF, water / dust tight enclosure  LPT-A-COA
Electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, sensor CEF, water / dust tight enclosure  LPT-A-COB
Electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure with PTFE membrane sensor element protection  LPT-A-CL2
Electrochemical chlorine dioxide (ClO2) sensor (0 - 1.0 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-CLO2
Electrochemical ethylene (C2H4) sensor (0 - 200 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-C2H4
Electrochemical ethylene oxide (C2H4O) sensor (0 - 20 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-EETO
Electrochemical formaldehyde (HCHO / CH2O) sensor (0 - 5 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-CH2O
Electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-EH2
Electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range) 3 yr life span, LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-H2S
Electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range) 5+ yr life span, LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-H2SB
Electrochemical hydrogen chloride (HCl) sensor (0 - 20 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-HCL
Electrochemical hydrogen cyanide (HCN) sensor (0 - 100 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-HCN
Electrochemical nitric oxide (NO) sensor (0 - 100 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-NO
Electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, sensor CEF, water / dust tight enclosure  LPT-A-NO2A
Electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, sensor CEF, water / dust tight enclosure  LPT-A-NO2B
Electrochemical oxygen (O2) sensor (0 - 25% volume range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-O2
Electrochemical ozone (O3) sensor (0 - 2 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure with PTFE membrane sensor element protection  LPT-A-O3
Electrochemical phosphine (PH3) sensor (0 - 5 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-PH3
Electrochemical silane (SiH4) sensor (0 - 20 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SIH4
Electrochemical sulphur dioxide (SO2) sensor (0 - 20 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SO2
Solid state refrigerant (R22) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR22
Solid state refrigerant (R134A) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR134A
Solid state refrigerant (R402A) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR402A
Solid state refrigerant (R404A) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR404A
Solid state refrigerant (R407C) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR407C
Solid state refrigerant (R410A) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR410A
Solid state refrigerant (R422D) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR422D
Solid state refrigerant (R438A) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR438A
Solid state refrigerant (R507) sensor (0 - 2,000 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-SR507A
Solid state TVOC sensor (0 - 500 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-STVOC
Catalytic hydrogen (H2) sensor (0 - 100% LEL range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-CH2-100
Catalytic methane (CH4) sensor (0 - 100% LEL range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-CCH4-100
Catalytic propane (C3H8) sensor (0 - 100% LEL range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-CC3H8-100
Electrochemical fluorine (F2) sensor (0 - 1 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-F2
Electrochemical hydrogen fluoride (HF) sensor (0 – 10.0 ppm range), LCD display, 4 - 20 mA or 0 - 10 VDC output, three-wire VDC or four-wire VAC power, 2 A @ 30 VAC / VDC SPDT relay, audible alarm, water / dust tight enclosure  LPT-A-HF

Options

Description Code
Internal heater for cold environment applications down to -40°C / -40°F  H
Splash guard, factory installed, IP54 rating, not available with Cl2, HCl or O3 (sticky gas) sensors  S

Remote Sensors

Description Code
Catalytic Hydrogen (H2) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure  ESH-A-CH2-100
Catalytic Methane (CH4) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure  ESH-A-CCH4-100
Catalytic Propane (C3H8) ESH-A Remote Sensor (0 - 100% LEL), water / dust tight enclosure  ESH-A-CC3H8-100
Solid state refrigerant (R22) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR22
Solid state refrigerant (R134A) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR134A
Solid state refrigerant (R402A) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR402A
Solid state refrigerant (R404A) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR404A
Solid state refrigerant (R407C) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR407C
Solid state refrigerant (R410A) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR410A
Solid state refrigerant (R422D) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR422D
Solid state refrigerant (R438A) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR438A
Solid state refrigerant (R507) ESH-A Remote Sensor (0 - 2,000 ppm range), water / dust tight enclosure  ESH-A-SR507A
Solid state TVOC ESH-A Remote Sensor (0 - 500 ppm range), water / dust tight enclosure  ESH-A-STVOC
TVOC PID ESH-A Remote Sensor (0 - 30 ppm range), water / dust tight enclosure  ESH-A-SPL
TVOC PID ESH-A Remote Sensor (0 - 300 ppm range), water / dust tight enclosure  ESH-A-SPH
Infrared Propane (C3H8) ESH-A Remote Sensor (0 - 100% LEL) range), water / dust tight enclosure  ESH-A-JET

Remote Devices

Description Code
Remote self-contained sample draw pump unit, 24 VAC powered  PRU-24-A
Remote self-contained sample draw pump unit, 24 VDC powered  PRU-24-D
Remote Horn/Strobe Combo, rated 100 dB @ 3 m (10 ft)  RSH-24VDC
Remote Audible Alarm, rated 90 dB @ 30 cm (0.98 ft)  RAA-90
Remote Audible Alarm, water tight audible, rated 85 dB @ 60.96 cm (2 ft)  RAA-90-W

External Sensor Head (ESH)

Description Code
Dongle style remote ESH refrigerant (R410A) sensor (0 - 2000 ppm)  ESH-SR410A-Z

Metal Protective Guard

» 16 gauge, clear anodized metal protective guard
» Larger size for controllers & self-contained systems
» Smaller size for analog & digital transmitters

Calibration Kit

» Commonly used tools required for calibration in one convenient toolbox
 

GENie Calibration Systems

» Hand held, rugged design
» User adjustable gas concentration outputs
» Disposable gas vials do not expire and are non-hazardous for transport
» Traceable to NIST standards
 

RSH-24VDC Remote Strobe & Horn Combo (with Enclosure)

» Two alarm features combined into one device
» Light weight, weather and corrosion resistant
» Independent settings for horn, strobe or horn and strobe together
» Surface mount and 1/2” NPT conduit mount
» ABS / Polycarbonate water / dust tight enclosure

Remote Audible Alarm

» Loud remote audible alarm
» Easy installation
» 2-wire VDC
» Standard corrosion resistant enclosure
» Water tight option available for wet or wash down environments

Magnetic Wand

» Used for non-intrusive calibration of the LPT-A and SCC
» Use to access menu options and initiate non-intrusive calibration for the LPT-M, LPT-P, LPT-B, DCC and CXT
 

Bump Test Systems

» Hand held, easy to use
» Disposable gas generating cells do not expire
» Non-hazardous shipping (not a dangerous good)


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