cGas Detector Digital Transmitter

For monitoring: Ammonia, Carbon monoxide, Carbon dioxide, Chlorine, Ethylene, Ethylene oxide, Formaldehyde, Hydrogen, Hydrogen fluoride, Hydrogen sulphide, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Sulfur dioxide, Ethanol, Dimethyl ether, Methanol, 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
  • Greenhouses
  • CO2 Fire Suppression
  • CO2 Storage Rooms
  • CO2 Refrigeration Systems
  • Microdistilleries
  • Chemical Plants
  • Perfume/Beauty Products Manufacturing
  • Household Products Manufacturing
  • Sewage Treatment Facilities
  • and many more...

Key Features

  • Up to 2 gas channel configurations
  • User in the field configurable BACnet® MS/TP RS-485 or Modbus® RTU RS-485 digital output signal
  • Easy Plug & Play Smart Sensor replacement at end of life, comes pre-calibrated
  • Bright LCD display
  • USB port for configuration changes and firmware upgrades
  • Internal 2A SPDT dry contact relay with or without internal buzzer (Option -RBZ or Option -RLY)
  • Optional RH & Temperature sensor (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), IP54 with optional splash guard installed
  • 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, relay 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), Ethylene (C2H4), Ethylene oxide (C2H4O), Formaldehyde (CH2O), Hydrogen (H2), Hydrogen fluoride (HF), Hydrogen sulphide (H2S), Nitric oxide (NO), Nitrogen dioxide (NO2), Oxygen (O2), Ozone (O3), Silane (SiH4), Sulphur dioxide (SO2)
Infrared Sensor
Carbon dioxide (CO2)
Solid State Sensors
Refrigerants R22, R32, R134A, R402A, R404A, R407C, R410A, R422D, R438A, R448A, R449A, R507A, R513A, R514A, TVOCs
Catalytic Sensors
Ammonia (NH3), Hydrogen (H2), Methane (CH4), Propane (C3H8), Ethanol or Dimethyl Ether (C2H6O), Methanol (CH4O)
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 graphic LCD
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
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
RH & Temperature (Option -RHT)
User selectable units DegC or DegF
Relay & Buzzer*
1 SPDT relay rated 30 volts, 2 amp max with
internal buzzer rated 90 dB @ 10 cm / 4 in, enable/disable
Relay (Option -RLY)
1 SPDT relay rated 30 volts, 2 amp max
Electrical
Power Requirement
16-30 VDC, 3 W*, Class 2
*dependent on sensor type
12-27 VAC, 50-60 Hz, 3 VA*, Class 2
*dependent on sensor type
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
0°C to 40°C (32°F to 104°F), temperatures below 0°C / 32°F require Option-LT
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
CO and NO2 Sensor Complies with
UL2075, 2nd Edition, Standard for Gas and Vapour Detectors and Sensors
Product Codes
4 Series Electrochemical Gas Sensors
Available with relay and buzzer - add Option -RBZ
CGAS-D-CO
Electrochemical carbon monoxide (CO) sensor (0 - 200 ppm range), UL2075 approved, 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-CO-100
Electrochemical carbon monoxide (CO) sensor (0 - 100 ppm range), UL2075 approved sensor, 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-CO-250
Electrochemical carbon monoxide (CO) sensor (0 - 250 ppm range), UL2075 approved sensor, 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-CO-300
Electrochemical carbon monoxide (CO) sensor (0 - 300 ppm range), UL2075 approved sensor, 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-CO-500
Electrochemical carbon monoxide (CO) sensor (0 - 500 ppm range), UL2075 approved sensor, 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-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-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), UL2075 approved sensor, 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-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 (NOTE: Cannot add -RBZ, order a CGAS-D-7SO2 instead)
4 Series Sticky Gas Sensors
Not available with a relay and/or buzzer.
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-CL2-10
Electrochemical chlorine (Cl2) 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-CLO2
Electrochemical chlorine dioxide (ClO2) sensor (0 - 1 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-F2
Electrochemical fluorine (F2) sensor (0 - 1ppm), 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 - 30 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-HCN
Electrochemical hydrogen cyanide (HCN) sensor (0 - 30 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-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-O3
Electrochemical ozone (O3) 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
7 Series Gas Sensors
Come standard with relay and buzzer.
CGAS-D-7NH3
Electrochemical ammonia (NH3) 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-7CO
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-7CL2
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-7CL2-10
Electrochemical chlorine (Cl2) 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-7CLO2
Electrochemical chlorine dioxide (ClO2) sensor (0 - 1 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-7C2H4
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-7C2H4-1500
Electrochemical ethylene (C2H4) sensor (0 - 1,500 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-7F2
Electrochemical fluorine (F2) sensor (0 - 1ppm), 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-7HCL
Electrochemical hydrogen chloride (HCL) sensor (0 - 30 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-7HCN
Electrochemical hydrogen cyanide (HCN) sensor (0 - 30 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-7HF
MS/TP output, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-7H2S
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-7NO2
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-7O3
Electrochemical ozone (O3) 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-7SIH4
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-7SO2
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
Carbon Dioxide Gas Sensors
Available with relay and buzzer - add Option -RBZ
CGAS-D-CO2-2K
Internal infrared carbon dioxide (CO2) sensor (0 - 2,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 1 internal relay and buzzer, 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, 1 internal relay and buzzer, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CO2-10K
Internal infrared carbon dioxide (CO2) sensor (0 - 10,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 1 internal relay and buzzer, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CO2-20K
Internal infrared carbon dioxide (CO2) sensor (0 - 20,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 1 internal relay and buzzer, 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, 1 internal relay and buzzer, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
CGAS-D-CO2-100%
Internal infrared carbon dioxide (CO2) sensor (0 - 100% vol), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 1 internal relay and buzzer, 24 VDC or VAC power, black ABS/PC water / dust tight enclosure, plug & play smart sensor technology
Solid State Refrigerant Gas Sensors
Available with relay and buzzer - add Option -RBZ. Also available with an NDIR refrigerant sensor - see CGAS Detector IR Refrigerant Transmitter product page.
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-SR32
Solid state refrigerant (R32) 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-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-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-SR448A
Solid state refrigerant (R448A) 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-SR449A
Solid state refrigerant (R449A) 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-SR513A
Solid state refrigerant (R513A) 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-SR514A
Solid state refrigerant (R514A) 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
Catalytic Combustible Gas Sensors
Available with relay and buzzer - add Option -RBZ
CGAS-D-NH3-3%
Single channel, catalytic ammonia (NH3) sensor (0 - 3.0% vol 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. NOTE: This is not a life safety device. This is a backup redundancy detector for monitoring potentially high levels of ammonia.
CGAS-D-CC4H10-100
Catalytic butane (C4H10) sensor (0 - 100% LEL range), LCD display, in field configurable Modbus RTU RS-485 or BACnet MS/TP RS-485 output, Plug & Play Smart sensor replacement, water / dust tight enclosure
CGAS-D-CC2H6O-100
Catalytic ethanol or dimethyl ether (C2H6O) sensor (0 - 100% LEL range), LCD display, in field configurable Modbus RTU RS-485 or BACnet MS/TP RS-485 output, Plug & Play Smart sensor replacement, water / dust tight enclosure
CGAS-D-CH2-100
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-CCH4O-100
Catalytic methanol (CH4O) sensor (0 - 100% LEL range), LCD display, in field configurable Modbus RTU RS-485 or BACnet MS/TP RS-485 output, Plug & Play Smart sensor replacement, water / dust tight enclosure
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
Other Sensors
Available with rely and buzzer - add Option -RBZ
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-SPH
PID TVOC sensor (0 - 300 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-RHT
Single channel relative humidity and temperature sensor, user configurable measurement units, 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-R
No internal sensor, add required ESH-A Remote Sensor
CGAS-D-RT
No internal sensor, add an analog transmitter
Two Channel Gas Detectors
Available with rely and buzzer - add Option -RBZ
CGAS-D-CO-NO2
Carbon monoxide (CO) sensor (0 - 200 ppm) & nitrogen dioxide (NO2) sensor (0 - 10 ppm), UL2075 approved sensors, 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-CO-100-NO2
Carbon monoxide (CO) sensor (0 - 100 ppm) & nitrogen dioxide (NO2) sensor (0 - 10 ppm), UL2075 approved sensors, 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-CO-250-NO2
Carbon monoxide (CO) sensor (0 - 250 ppm) & nitrogen dioxide (NO2) sensor (0 - 10 ppm), UL2075 approved sensors, 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-CO-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-CO-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-CO-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-CO-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 
CGAS-D-CO-R
Internal Carbon Monoxide (CO) sensor (0 - 200 ppm), UL2075 approved sensor, add required ESH-A Remote Sensor
CGAS-D-NO2-R
Internal Nitrogen Dioxide (NO2) sensor (0 - 10 ppm), UL2075 approved sensor, add required ESH-A Remote Sensor
CGAS-D-CO-RT
Internal Carbon Monoxide (CO) sensor (0 - 200 ppm), UL2075 approved sensor, add an analog transmitter
CGAS-D-NO2-RT
Internal Nitrogen Dioxide (NO2) sensor (0 - 10 ppm), UL2075 approved sensor, add an analog transmitter
Factory Options
-LT*
Low temperature package with OLED display and internal heater for cold environment applications down to -40°C / -40°F
-RBZ*
1 SPDT dry contact relay rated 30 volts, 2 amps max with internal audible alarm rated 90 dB @ 10 cm / 4 in
-RLY*
1 SPDT dry contact relay, rated 30 volts, 2 amps max
-RHT
RH and Temperature sensor, user selectable units DegC or DegF
-S
Splash Guard for non sticky gas sensors, factory installed, IP54 rating
-SN
Splash Guard for sticky gas sensors (Cl2, ClO2, HCl, HCN, HF, O3, PH3) and for configurations that include an internal NO2 sensor, factory installed
Important Notes on Options
*Option -LT is not available with CGAS-D-EETO
*Options -RBZ or -RLY can be added to all single channel 4-series electrochemical toxic gas sensors
*Options -RBZ or -RLY can be added to all combustible gas, solid state or PID TVOC gas sensors
*All 4 series sticky gas models cannot have a relay or buzzer.

Options, Accessories and More...