LPT Low Power Transmitter

LPT Low Power Transmitter
For monitoring: Ammonia, Carbon monoxide, Nitrogen dioxide, Chlorine, Ozone or Oxygen
Single channel, analog gas detector for enclosed parking facilities, recreational facilities, oxygen depletion 
Parking Facilities, Vehicle Repair Shops, Manufacturing Plants, Maintenance Facilities, Ice Rinks, Aquatic Facilities,
Chiller Rooms, Chemical Storage Rooms, Oxygen Depletion and many more...
Key Features
  • Single channel
  • Linear 4 - 20 mA output signal
  • 2-wire loop, 3-wire VDC or 4-wire VAC power
  • Standard water / dust tight, corrosion resistant enclosure (drip proof)
  • IP54 rated with optional splash guard installed

The LPT is an economical, single sensor, analog transmitter for monitoring toxic gases non-hazardous, non-explosion 
proof rated commercial and light industrial applications. This basic transmitter is designed to be part of a fixed
system with a Controller for applications such as car parks, vehicle repair, aquatic centers, ice rinks and oxygen
depletion applications. It features a two-wire loop power, three-wire VDC or four-wire VAC power, 4 - 20 mA linear
output signal, thermal resetting fuses, temperature compensation, and visual LED indication for power and fault
conditions, all in a RoHS compliant package. Comes standard with a water / dust tight, corrosion resistant ABS /
polycarbonate enclosure with a hinged, secured door. With the optional splash guard installed, the enclosure is IP54
rated and ideal for use in water spray or wash down applications.
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 acceptable in non-critical applications.
Target Gas
Gas Sensors Ammonia (NH3), Carbon monoxide (CO), Nitrogen dioxide (NO2), Chlorine (Cl2),
Ozone (O3), Oxygen (O2)


ABS / Polycarbonate, corrosion resistance Copper coated interior to reduce RF interference IP54 rated with optional splash guard installed

Weight				        200 g / 0.44 lbs

Size				                127 x 127 x 53 mm / 5.0 x 5.0 x 2.1 inches

User Interface
Single color status LED


Output				        Linear 4 - 20 mA 
				                Maximum 216 Ω load 
				                (wiring plus termination resistor) at 16 VDC 
				                Maximum 316 Ω load 
				                (wiring plus termination resistor) at 12 VAC

Power Requirement
2-wire mode: 16 - 30 VDC, 1 W, Class 2 3-wire mode: 16 - 30 VDC, 1 W, Class 2 4-wire mode: 12 - 27 VAC, 50-60 Hz, 1 VA, Class 2

Current Draw			        25 mA @ 24 VDC (max)

Wiring				        VDC 2-conductor 18 AWG stranded, shielded 
				                VDC 3-conductor 18 AWG stranded, shielded 
				                VAC 4-conductor 18 AWG stranded, shielded

Fuses				                Thermal, resetting

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

Operating Humidity		        15 - 90% RH non-condensing

Conforms to
CSA-C22.2 No. 205-M1983 (R2009), UL508 (Edition 17):2007 EMC Directive 2004/108/EC, EN 50270:2006, Type 1, EN61010 FCC. This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions:

This device may not cause harmful interference, and (2) this device must
accept any interference received,

including interference that may cause undesired operation. RoHS compliant circuit boards

Technical Library   Part Numbers
Visitors: 72,601