cGas Detector Carbon Dioxide (CO2) Transmitter

For monitoring: Carbon dioxide

Low maintenance Carbon dioxide (CO2) gas detector available in ppm or %vol with Plug & Play Smart Sensor 
Technology

Applications
Greenhouses, Wineries, Breweries, Marine Vessels, Fruit Ripening Rooms, CO2 Fire Suppression, CO2 Storage Rooms, 
CO2 Refrigeration Systems, Beverage Bottling Facilities and many more...

Key Features

• One 4-20 mA analog output or user in the field configurable BACnet® MS/TP RS-485 or Modbus® RTU
  RS-485 digital output signal to 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
• Standard water / dust tight, corrosion resistant enclosure (drip proof); IP54 rated with optional splash guard
  (Option -S) installed
• 24 VDC or VAC power (ground reference)
• RoHS compliant circuit boards

The cGas Detector Carbon Dioxide Transmitter is a low maintenance gas monitoring device designed for use in 
non-explosion rated, commercial applications that require continuous monitoring of CO2.

It offers one 4-20 mA analog output or a user selectable in the field digital output with your choice of BACnet® 
or Modbus® for communicating with a Building Automation System or ventilation controller. Ideal for use for 
applications where compressed CO2 is used and stored, climate control in commercial buildings and other processes 
requiring the continuous monitoring of CO2.

Powered by 24 VDC or ground referenced AC, the CO2 cGas Detector has an LCD display, temperature compensation, 
thermal resetting fuse and the firmware and configuration can be upgraded in the field using the USB connection. 
Pre-calibrated sensors with true Plug & Play Smart Sensor technology makes replacing sensors quick and easy.

The cGas CO2 Detector comes in a standard water / dust tight, corrosion resistant ABS/ polycarbonate enclosure 
with a hinged, secured door. With the optional, factory installed splash guard the enclosure is IP54 rated and 
provides protection in water spray or wash down applications.

Target Gas

Infrared Sensor				                Carbon dioxide (CO2)

Mechanical

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

User Interface

Display					                2-line by 16 character graphic LCD

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 updated 
                                                                / firmware upgrades

Input/Output

Analog Output (CGAS-A models)		        One linear 4 - 20 mA analog

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

Electrical

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)

Fuse(s)					                Automatic resetting thermal

Environmental

Operating Temperature			                0°C to 50°C (32°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