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General Specification
Use:
Gas detector with default 3-wire, 4-20mA output for the protection of personnel and plant
from flammable and toxic gas hazards.
Electrical Specifications:
Input Voltage Range
Max Power Consumption
Current output
2.0 mA
4.0 mA to 20.0 mA
2.0 mA to 2.5 mA
21.0 mA
Terminals
Relays
Communication
Detector Body Specifications:
Material
Weight
Mounting
Entries
Environmental:
IP Rating
Operating
Temperature
Operating Humidity
Operating Pressure
Storage Conditions
PRS-UM-PC3-EN-Rev.04-06.2020
12 to 24VDC (24VDC nominal)
Max 5 Watts. at 24VDC
4-20mA
Fault
Normal gas measurement
Inhibit (during configuration/warm-up)
Maximum over range
3 x screw terminals suitable for wire diameter 0.5mm2 to 2.5mm2
(20AWG to 13AWG).
2 x screw terminals ( 0.5mm2 - 2.5mm2 (20AWG to 13AWG) for RS485
6 x screw terminals ( 0.5mm2 - 2.5mm2 (20AWG to 13AWG) for Relays
3 x (1A 30VDC, 0.5A 125VAC, 0.3A 80VDC). Selectable normally open or
normally closed (switch) and de-energized.
RS485, Modbus RTU
Table 13: Electrical specifications
Epoxy painted aluminium alloy (Sensor head is nickel plated brass)
Aluminium Alloy :1.33kg (with Sensor Header)
Wall mounting
½ NPT field cable entry, ¾ NPT sensor entry
Table 14: Detector body specifications
IP65
-20ºC to +50ºC / -4ºF to +120ºF
Continuous 20-90%RH (non condensing)
Intermittent 10-99%RH (non condensing)
90-110kPa
-30°C to +70°C (-22°F to +158°F)
Table 15: Environmental specifications
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