LPT-A Analog Transmitter
The LPT-A is a full featured, single sensor, analog transmitter available with a wide range of sensors and sensor types including electrochemical toxic, solid state refrigerants and catalytic combustibles. Operating as an analog transmitter or a stand-alone fixed system, the LPT-A offers 3-wire VDC or 4-wire VAC power, jumper selectable 4 - 20 mA or 0 - 10 VDC analog output, one dry contact relay, thermal resetting fuses, temperature compensation, back lit LCD display and audible alarm, all in a RoHS compliant package.
It 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 sensor so that less frequent calibrations are required. For use in non-hazardous, non-explosion rated commercial and light industrial applications.
LPT-A Analog Transmitter
Target Gas
Electrochemical Sensors (internal)
Ammonia (NH3), Carbon monoxide, Chlorine (Cl2), Chlorine dioxide (ClO2), Ethylene (C2H4), Ethylene oxide (C2H4O), Fluorine (F2), Formaldehyde (CH2O), Hydrogen (H2), Hydrogen chloride (HCl), Hydrogen cyanide (HCN), Hydrogen fluoride (HF), Hydrogen sulphide (H2S), Nitric oxide (NO), Nitrogen dioxide (NO2), Oxygen (O2), Ozone (O3), Phosphine (PH3), Silane (SiH4), Sulphur dioxide (SO2), TVOCs (Isobutylene)
Solid State Sensors (internal)
Refrigerants R22, R134A, R402A, R404A, R407C, R410A, R422D, R438A, R438A, R507A
Catalytic Sensors (internal or remote)
Hydrogen (H2), Methane (CH4), Propane (C3H8)
PID Sensors (remote)
TVOC
Infrared Sensors (remote)
Propane (C3H8)
Mechanical
Enclosure
ABS / Polycarbonate, corrosion resistant
Copper coated interior to reduce RF interference
IP54 rated with splash guard installed
Weight
363 g / 0.8 lbs
Size
127 x 127 x 53 mm / 5.0 x 5.0 x 2.1 inches
User Interface
Display
Graphic LCD, grey border
Magnetic switches to initiate calibration without opening the enclosure
Input/Output
Output
Linear 4 - 20 mA analog
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
Relay
1 SPDT dry contact, rated 30 Volts, 2 Amps max
Audible Alarm
Standard internal buzzer
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
Current Draw
125 mA @ 24VDC (max)
Wiring
VDC (or ground referenced AC): 3-conductor 18 AWG stranded, shielded
VAC: 4-conductor 18 AWG stranded, shielded
Fuses
Thermal, resetting