cGas Detector for Indoor Public Spaces
Single channel gas detector with an aesthetically pleasing design to reduce noticeability when used in publicly occupied spaces such as hotels and schools.
- Analog models - 4-20 mA analog output or 0-10 volt or 2-10 volt output
- Digital models - field configurable BACnet® MS/TP RS-485 or Modbus® RTU RS-485 output to a BAS
- Easy Plug & Play Smart Sensor replacement at end of life
- Pre-calibrated replacement sensors
Description
Designed for use in publicly occupied and frequented spaces. Ideal for use where integrated demand controlled ventilation (DCV) is used to regulate a comfortable working environment, maintain air quality and promote energy savings. The low profile, aesthetically pleasing enclosure is designed to reduce the noticeability of the device by the public eye. It is secured by a mounting plate that can be used with or without a junction box.
The detector supports analog output as well as BACnet® and Modbus® communication protocols for integration with controllers or building automation systems. Designed with Plug & Play Smart Sensor Technology for easy installation and maintenance, it operates on 24 VDC or ground-referenced AC and includes an LCD display, internal buzzer, relay, temperature compensation, and a thermal resetting fuse. Firmware and configuration can be upgraded in the field via a USB connection, ensuring flexibility and long-term reliability.
Specifications
Target Gas
| Gas Sensors | Carbon dioxide (CO2), Carbon monoxide (CO), Formaldehyde (CH2O), Methane (CH4), TVOCs |
Target Other
| Sensors | RH & Temperature |
Mechanical
| Enclosure | Polycarbonate, white, low profile |
| Weight | 400 g / 14 oz |
| Size | 124.9 x 124.9 x 50.0 mm / 4.9 x 4.9 x 2.0 in |
User Interface
| Display | 2-line by 16 character graphic LCD, Operating Temp: 0°C to 40°C / 32°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 |
Input/Output
| Analog Output (CGAS-AP models) | One 4 - 20 mA analog signal used for gas reading or jumper selectable 0-10 volt or 2-10 volt output |
| Digital Output (CGAS-DP models) | Field configurable 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 (Option -RBZ)* | 1 SPDT dry contact relay, rated 30 volts, 2 amps max with internal buzzer rated 90 dB @ 10 cm / 4 in, enable/disable |
| Relay (Option -RLY)* | 1 SPDT dry contact relay, rated 30 volts, 2 amps 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 (analog) | VDC (or ground referenced AC) 3-conductor 16 - 18 AWG shielded, stranded within conduit, VAC 4-conductor shielded 16 - 18 AWG stranded within conduit |
| Wiring (digital) | VDC or VAC (ground referenced) 4-conductor 18 - 22 AWG twisted, shielded, 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) |
| 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. Listed by BTL (digital models) |
Detected Gases
Configure Your cGas Detector for Indoor Public Spaces
Select options below to filter configurations.78 configurations available
Showing 1–20 of 78 configurations
CGAS-O-HSG
CGas Office Mount Housing Assembly (no sensor)
CGAS-AP-CH2O
CGas Analog CH2O Transmitter (0-5 ppm), Public Space
CGAS-AP-CCH4-100-RLY
CGas Analog CH4 (methane) Transmitter 0-100% LEL w/Relay, public space
CGAS-AP-CO-RHT-RLY
CGas Analog CO Transmitter 0-200PPM w/RH & Temperature sensor and Relay
CGAS-AP-RD
CGas Analog Public Space Transmitter, 1 Channel Remote Dongle, Base Unit
CGAS-AP-RD-RLY
CGas Analog Public Space Transmitter, 1CH Remote, Relay Option
CGAS-AP-CO
CGas CO (0-200ppm) Analog Public Space
CGAS-AP-CO-RLY
CGas CO (0-200ppm) Analog Public Space w/ Relay
CGAS-DP-CO
CGas CO (0-200ppm) Digital Public Space
CGAS-DP-CO-RLY
CGas CO (0-200ppm) Digital Public Space w/ relay
CGAS-DP-CO-CO2-5K-RBZ
CGas CO 0-200ppm, CO2 0-5000ppm Digital public space with Relay and Buzzer
CGAS-AP-CO2-2K-RBZ
CGas CO2 0-2000 ppm Analog Transmitter - Public Space
CGAS-DP-CO2-2K-RHT
CGas CO2 (0 - 2,000 ppm) Office Mount w/ RH and Temp
CGAS-AP-CO2-2K
CGas CO2 (0-2000ppm) Analog Public Space
CGAS-DP-CO2-5%
CGas CO2 (0-5% Vol) Office Mount Digital Assembly
CGAS-AP-CO2-5K
CGas CO2 (0-5000ppm) Analog Public Space
CGAS-AP-CO2-5K-STVOC
CGas CO2 (0-5000ppm) Analog Public Space & TVOC
CGAS-AP-CO2-5K-RBZ
CGas CO2 (0-5000ppm) Analog Public Space, Relay Buzzer
CGAS-DP-CO2-2K
CGas CO2 0-2000ppm Office Mount Analog Assembly
CGAS-DP-CO2-2K-RBZ
CGas CO2 0-2000ppm Office Mount Analog Assembly w/ Relay, Buzzer
Not all configurations are listed here. Contact our sales team to discuss your specific requirements.
Documents
Application: Schools - FCS and CGAS Public Space
PDF • 659 KB • Application Guides
BTL Listing (PICS) for cGas Family
PDF • 202 KB • Certifications
cGas Detector Public Spaces Datasheet
PDF • 286 KB • Datasheets
Engineering Spec: Classroom - CGAS-AP-CO2-5K
DOCX • 382 KB • Engineering Specs
Calibration Kit Manual
PDF • 810 KB • Manuals
cGas Detector Public Spaces Installation Manual
PDF • 623 KB • Manuals
cGas Detector Public Spaces Operation Manual - firmware v2.05 onwards
PDF • 413 KB • Manuals
cGas Detector Public Spaces Operation Manual - up to firmware v2.04
PDF • 1.3 MB • Manuals
Product Spec: CGAS Detector RH and Temperature Sensor (Option -RHT)
PDF • 248 KB • Product Specs
Product Spec: CGAS-AP-CCH4-100 Catalytic Methane Sensor
PDF • 123 KB • Product Specs
Product Spec: CGAS-AP-CH2O Formaldehyde Electrochemical Sensor
PDF • 124 KB • Product Specs
Product Spec: CGAS-AP-CO Electrochemical Carbon Monoxide Sensor (standard)
PDF • 124 KB • Product Specs
Product Spec: CGAS-AP-CO2-2K Carbon Dioxide NDIR Sensor
PDF • 121 KB • Product Specs
Product Spec: CGAS-AP-CO2-5% Carbon Dioxide NDIR Sensor
PDF • 121 KB • Product Specs
Product Spec: CGAS-AP-CO2-5K Carbon Dioxide NDIR Sensor
PDF • 121 KB • Product Specs
Product Spec: CGAS-AP-SPH High Range TVOC PID Sensor
PDF • 122 KB • Product Specs
Product Spec: CGAS-AP-SPL Low Range TVOC PID Sensor
PDF • 122 KB • Product Specs
Product Spec: CGAS-DP-CCH4-100 Catalytic Methane Sensor
PDF • 122 KB • Product Specs
Product Spec: CGAS-DP-CH2O Formaldehyde Electrochemical Sensor
PDF • 122 KB • Product Specs
Product Spec: CGAS-DP-CO Carbon Monoxide Electrochemical Sensor (standard)
PDF • 123 KB • Product Specs
Product Spec: CGAS-DP-CO2-2K Carbon Dioxide NDIR Sensor
PDF • 119 KB • Product Specs
Product Spec: CGAS-DP-CO2-5% Carbon Dioxide NDIR Sensor
PDF • 119 KB • Product Specs
Product Spec: CGAS-DP-CO2-5K Carbon Dioxide NDIR Sensor
PDF • 119 KB • Product Specs
Product Spec: CGAS-DP-SPH High Range TVOC PID Sensor
PDF • 120 KB • Product Specs
Product Spec: CGAS-DP-SPL Low Range TVOC PID Sensor
PDF • 120 KB • Product Specs
cGas Modbus Holding Registers
PDF • 299 KB • Technical References
Video Library
ASK THE EXPERTS - Gas Detection System: How It Works
ASK THE EXPERTS - Gas Detection System: Your Design
ASK THE EXPERTS - Gas Detector: How it Works
ASK THE EXPERTS - Gas Detector: Mounting Locations
ASK THE EXPERTS - Gas Detector: Sensor Coverage
ASK THE EXPERTS - Gas Detector: Mounting Considerations
ASK THE EXPERTS - Gas Detection System: Interaction with VFD Fans
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Replacement Sensors for cGas Product Line
Replacement Plug & Play Smart Sensor Boards for CGAS-A, CGAS-D, CGAS-AP, CGAS-DP, CGAS-SC and CGAS-SD models. Gas sensors have a lifespan which means they expire and need to be replaced.