cGas Detector IR Refrigerant Transmitter

  • Accurate, low level leak detection
  • Long life, non-dispersive infrared refrigerant sensor, dual beam technology
  • Easy Plug & Play Smart Sensor replacement at end of life, comes pre-calibrated
  • One linear 4-20 mA or 0-10V analog output or field configurable BACnet® MS/TP RS-485 or Modbus® RTU RS-485 digital output signal to a BAS
  • 1 SPDT relay rated 30 volts, 2 amp max
  • Internal audible alarm rated 90 dB @10 cm/4 in
  • 24 VDC or VAC power (ground reference)
  • Bright LCD display
  • USB port for configuration changes and firmware upgrades
  • Standard water / dust tight, corrosion resistant enclosure (drip proof); IP54 rated with optional splash guard (Option -S) installed
  • RoHS compliant circuit boards

Infrared Sensor:  R22, R32, R123, R134A, R143A, R227ea, R402A, R404A, R407A, R407C, R407F, R410A, R417A, R422A, R422D, R427A, R434A, R438A, R442A, R448A, R449A, R450A, R452A, R453A, R454A, R454B, R455A, R507, R513A, R514A, HFO1234YF, HFO1234ZE, HFO1233ZD, RSF6, Carbon Dioxide (R744)

Enclosure:  Black ABS / Polycarbonate, corrosion resistant 

Copper coated interior to reduce RF interference 

IP54 rated with splash guard installed (Option -S)

Weight:  400 g / 14 oz

Size:  127 x 127 x 76 mm / 5.0 x 5.0 x 3.0 inches

Display (Standard):  2-line by 16 character graphic LCD
Operating Temp: 0°C to 40°C / 32°F to 104°F

Display (low temperature Option -LT)

2-line by 16 character OLED display
Operating Temp: -40°C to 40°C / -40°F to 104°F

Push Buttons:  Initiate calibration and menu options with internal UP, DOWN and ENTER push buttons

USB Port:  Internal port for USB memory stick for field configuration updates / firmware upgrades

Analog Output (CGAS-A models):  One linear 4 – 20 mA analog or 0-10 V (user configurable in the field)

Digital Output (CGAS-D models):  BACnet® MS/TP (version 1 rev 14) RS-485 or Modbus® RTU (version 1.1b3) RS-485 (user configurable in the field)

Relay:  1 SPDT relay rated 30 volts, 2 amp max

Audible Alarm:  Internal buzzer, rated 90 dB @ 10 cm / 4 in, enable/disable

Power Requirement:  16-30 VDC, 3 W, Class 2 

12-27 VAC, 50-60 Hz, 3 VA, Class 2

Analog Wiring (CGAS-A models):  VDC (or ground referenced AC): 3-conductor 18 AWG (or larger) shielded, stranded within conduit
VAC 4-conductor shielded 18 AWG stranded within conduit

Digital Wiring (CGAS-D models):  VDC or VAC (ground referenced) 4-conductor shielded 16 AWG stranded within conduit, network wiring (daisy-chain)

Conforms to:  CSA-C22.2 No. 205-12, UL508 (Edition 18):2018 

EMC Directive 2014/30/EU, EN 50270:2015, 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. 

Listed by BTL 

RoHS compliant circuit boards

  • Supermarkets
  • Convenience Stores
  • Grocery Stores
  • Refrigerated Mechanical Rooms
  • Commercial Chiller Equipment Rooms
  • Food Storage / Cold Storage Rooms
  • Walk-in Freezers
  • Food Processing Plants
  • Food Service Facilities
  • and many more…