LPT Low Power Transmitter

For monitoring: Ammonia, Carbon monoxide, Nitrogen dioxide, Chlorine, Oxygen or Sulphur dioxide

Single channel, analog gas detector for enclosed parking facilities, recreational facilities, oxygen depletion applications

Applications

Parking Facilities
Vehicle Repair Shops
Manufacturing Plants
Maintenance Facilities
Ice Rinks
Aquatic Facilities
Chiller Rooms
Chemical Storage Rooms
Oxygen Depletion
and many more...

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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

Description

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.

Specifications

Target Gas

Gas Sensors

Ammonia (NH3), Carbon monoxide (CO), Nitrogen dioxide (NO2), Chlorine (Cl2), Oxygen (O2), Sulphur dioxide (SO2)

Mechanical

Enclosure

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

Display

Single color status LED

Input/Output

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

Electrical

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

Environmental

Operating Temperature

-20°C to 40°C (-4°F to 104°F)

Operating Humidity

15 - 90% RH non-condensing

Certifications

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: (1) 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

Product Codes

LPT-NH3

Single channel, electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LED indicator, 4 - 20 mA output, two-wire / three-wire / four-wire VAC power, water / dust tight enclosure

LPT-TCO

Single channel, electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LED indicator, 4 - 20 mA output, two-wire / three-wire / four-wire VAC power, sensor CEF, water / dust tight enclosure

LPT-CL2

Single channel, electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LED indicator, 4 - 20 mA output, two-wire / three-wire / four-wire VAC power, water / dust tight enclosure

LPT-END

Single channel, electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LED indicator, 4 - 20 mA output, two-wire / three-wire / four-wire VAC power, sensor CEF, water / dust tight enclosure

LPT-O2

Single channel, electrochemical oxygen (O2) sensor (0 - 25% volume range), LED indicator, 4 - 20 mA output, two-wire / three-wire / four-wire VAC power, water / dust tight enclosure

LPT-SO2

Single channel, electrochemical sulphur dioxide (SO2) sensor (0 - 20 ppm range), LED indicator, 4 - 20 mA output, two-wire / three-wire / four-wire VAC power, water / dust tight enclosure

Factory Options

-S

Splash Guard for non sticky gas sensors, factory installed, IP54 rating

-SN

Splash Guard for sticky gas sensors (Cl2, NO2, O3), factory installed, includes Calibration Adapter Slide Cap