cGas Detector Digital Transmitter

For monitoring: Ammonia, Carbon monoxide, Carbon dioxide, Chlorine, Ethylene, Ethylene oxide, Fluorine, Formaldehyde, Hydrogen, Hydrogen sulphide, Hydrogen chloride, Hydrogen cyanide, Hydrogen fluoride, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Phosphine, Silane, Sulfur dioxide, Methane, Propane, Hydrogen, TVOCs, Refrigerants

One or two channel Modbus® or BACnet® gas detector with flexible customization options and Plug & Play Smart Sensor Technology

Applications

  • Parking Facilities
  • Vehicle Repair Shops
  • Ice Arenas
  • Swimming Pools
  • Refrigeration Rooms
  • Chiller Rooms
  • Battery Charging Rooms
  • Manufacturing Plants
  • Maintenance Facilities
  • and many more...

Key Features

  • 1 or 2 internal gas channel configurations
  • User in the field configurable BACnet® MS/TP RS-485 or Modbus® RTU RS-485 digital output signal with a BAS
  • Easy Plug & Play Smart Sensor replacement at end of life, comes pre-calibrated
  • Bright LCD display
  • USB port for configuration changes and firmware upgrades
  • Optional RH & Temperature sensor on select models (Option -RHT)
  • Optional low temperature operation package (Option -LT)
  • Optional factory installed splash guard (Option -S or Option -SN)
  • Standard black, ABS/polycarbonate, water / dust tight, corrosion resistant enclosure (drip proof)
  • Sensor Calibrating Extending Firmware (CEF) for enclosed parking applications
  • RoHS compliant circuit boards

Description

The cGas Detector is a digital, one or two channel gas detection transmitter that offers greater flexibility at a lower cost with customized sensor combinations and specialized options for adding only the functionality you need. It is ideal for monitoring toxic, combustible and refrigerant gases in commercial and light industrial, non-hazardous (non-explosion rated) environments.

Output is user selectable in the field with your choice of BACnet® or Modbus® for communicating with a Controller or a Building Automation System. Pre-calibrated sensors with true Plug & Play Smart Sensor technology makes replacing sensors quick and easy.

Powered by 24 VDC or ground reference AC, the digital cGas Detector it has an LCD display, temperature compensation, thermal resetting fuses and the firmware and configuration can be upgraded in the field using the USB connection. Specialized optional features include, relative humidity and temperature monitoring, low temperature operation and wash-down / water spray protection.

The digital cGas Detector comes in a standard water / dust tight, corrosion resistant ABS / polycarbonate enclosure with a hinged, secured door. With the optional, factory installed standard splash guard the enclosure is IP54 rated and provides protection in water spray or wash down applications.

Target Gas
Electrochemical Sensors
Ammonia (NH3), Carbon monoxide (CO), 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)
Solid State Sensors
Refrigerants R22, R134A, R402A, R404A, R407C, R410A, R422D, R438A, R438A, R507A, TVOCs
Infrared Sensor
Carbon dioxide (CO2)
Target Gas
Catalytic Sensors
Hydrogen (H2), Methane (CH4), Propane (C3H8)
PID Sensors
TVOC
Mechanical
Enclosure
Black ABS / Polycarbonate, corrosion resistant
Copper coated interior to reduce RF interference
IP54 rated with standard 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
User Interface
Display (standard)
2-line by 16 character LCD, black on green
Operating Temp: 0°C to 40°C / 32°F to 104°F
Display (Option -LT)
2-line by 16 character OLED display for cold environment applications down to -40°C / -40°F, yellow on black
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 firmware / configuration upgrades
Input/Output
Communication
User configurable in the field, BACnet® MS/TP (version 1 rev 14) RS-485 or Modbus® RTU (version 1.1b3) RS-485
Electrical
Power Requirement
16-30 VDC, 3 W, Class 2
12-27 VAC, 50-60 Hz, 3 VA, Class 2
Wiring
VDC or VAC (ground referenced) 4-conductor shielded 16 AWG stranded within conduit, network wiring (daisy-chain)
Fuse(s)
Automatic resetting thermal
Environmental
Operating Temperature
Standard: 0°C to 50°C (32°F to 122°F)
with Option -LT: -40°C to 50°C (-40°F to 122°F)
Operating Humidity
15 - 90% RH non-condensing
Certifications
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
Product Codes
CGAS-D-NH3
Electrochemical ammonia (NH3) sensor (0 - 500 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-LCO
Electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CO2-5K
Internal infrared carbon dioxide (CO2) sensor (0 - 5,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CO2-5%
Internal infrared carbon dioxide (CO2) sensor (0 - 5% vol), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CL2
Electrochemical chlorine (Cl2) sensor (0 - 5 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CLO2
Electrochemical chlorine dioxide (ClO2) sensor (0 - 1.0 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-C2H4
Electrochemical ethylene (C2H4) sensor (0 - 200 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-EETO
Electrochemical ethylene oxide (C2H4O) sensor (0 - 20 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-F2
Electrochemical fluorine (F2) sensor (0 - 1 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CH2O
Electrochemical formaldehyde (HCHO / CH2O) sensor (0 - 5 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-EH2
Electrochemical hydrogen (H2) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-HCL
Electrochemical hydrogen chloride (HCl) sensor (0 - 20 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-HCN
Electrochemical hydrogen cyanide (HCN) sensor (0 - 100 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-HF
Electrochemical hydrogen fluoride (HF) sensor (0 – 10.0 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-H2S
Electrochemical hydrogen sulphide (H2S) sensor (0 - 50 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-NO
Electrochemical nitric oxide (NO) sensor (0 - 100 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-NO2
Electrochemical nitrogen dioxide (NO2) sensor (0 - 10 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-O2
Electrochemical oxygen (O2) sensor (0 - 25% volume range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-O3
Electrochemical ozone (O3) sensor (0 - 2 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-PH3
Electrochemical phosphine (PH3) sensor (0 - 5 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SIH4
Electrochemical silane (SiH4) sensor (0 - 20 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SO2
Electrochemical sulphur dioxide (SO2) sensor (0 - 20 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR134A
Solid state refrigerant (R134A) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR22
Solid state refrigerant (R22) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR402A
Solid state refrigerant (R402A) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR404A
Solid state refrigerant (R404A) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR407C
Solid state refrigerant (R407C) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR410A
Solid state refrigerant (R410A) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR422D
Solid state refrigerant (R422D) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR438A
Solid state refrigerant (R438A) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SR507A
Solid state refrigerant (R507) sensor (0 - 2,000 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-STVOC
Solid state TVOC sensor (0 - 500 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-SPL
PID TVOC sensor (0 - 30 ppm range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CH2
Catalytic hydrogen (H2) sensor (0 - 100% LEL range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CCH4-100
Catalytic methane (CH4) sensor (0 - 100% LEL range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CC3H8-100
Catalytic propane (C3H8) sensor (0 - 100% LEL range), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-LCO-NO2
Carbon monoxide (CO) sensor (0 - 200 ppm) & nitrogen dioxide (NO2) sensor (0 - 10 ppm), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output,
24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology (if a splash guard is required, must order Option -SN)
CGAS-D-LCO-O2
Carbon monoxide (CO) sensor (0 - 200 ppm) & oxygen (O2) sensor (0 - 25% vol), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-LCO-C2H4
Carbon monoxide (CO) sensor (0 - 200 ppm) & ethylene (C2H4) sensor (0 - 200 ppm), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-LCO-H2S
Carbon monoxide (CO) sensor (0 - 200 ppm) & hydrogen sulphide (H2S) sensor (0 - 50 ppm), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-LCO-NO
Carbon monoxide (CO) sensor (0 - 200 ppm) & nitric oxide (NO) sensor (0 - 100 ppm), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-H2S-SO2
Hydrogen sulphide (H2S) sensor (0 - 50 ppm) & sulphur dioxide (SO2) sensor (0 - 20 ppm), LCD display, field configurable Modbus® RTU RS-485 or BACnet® MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology 
NOTE: other gases may be available upon request
Factory Options
-LT
Low temperature package with OLED display and internal heater for cold environment applications down to -40°C / -40°F
-RHT
RH and Temperature sensor (only available with CO models)
-S
Splash Guard for non sticky gas sensors, factory installed, IP54 rating
-SN
Splash Guard for sticky gas sensors (Cl2, ClO2, HCl, HCN, O3, PH3) and for CGAS-D-LCO-NO2, factory installed, includes Calibration Adapter Slide Cap

Options, Accessories and More...