cGas Detector for Indoor Public Spaces

For monitoring: Carbon dioxide, Carbon monoxide, Formaldehyde, TVOCs, Particulates, RH & Temperature, Refrigerants

One or two channel gas detector with an aesthetically pleasing design to reduce noticeability when used in publicly occupied spaces such as hotels and schools

Applications

  • Hotels
  • Office Buildings
  • Hospitals
  • Apartment Buildings
  • Retirement Homes
  • Theatres / Auditoriums
  • Schools / Universities / Dormitories
  • 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
  • Pre-calibrated replacement sensors
  • Bright LCD display
  • Models available with user selectable 1PM, 2.5PM or 10PM particulate sensor
  • Optional 2A SPDT dry contact relay (Option -RLY)
  • Optional RH & Temperature sensor (Option -RHT)
  • Low profile to reduce noticeability in public spaces
  • USB port for configuration changes and firmware upgrades
  • RoHS compliant circuit boards

Description

This cGas Detector is designed for use in publicly occupied spaces where integrated demand controlled ventilation (DCV) is used for air quality and energy savings; for continuous monitoring of refrigerants where high-efficiency, high volume refrigerant cooling and heating systems (VRF) are used to keep the indoor environment comfortable; and for other continuous monitoring of hazardous gases in publicly frequented areas. 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 mounted proud of the wall or flush with the wall using a junction box.

Both the analog and digital models are powered by 24 VDC or ground referenced AC, come with an LCD display, temperature compensation and thermal resetting fuse. Sensor replacement is easy with true Plug & Play smart sensors that arrive pre-calibrated. The firmware and configuration can be upgraded in the field using the USB connection.

The digital models are user configurable in the field for BACnet® MS-TP RS-485 or Modbus® RTU RS-485 output for communicating with a controller, Building Automation System or other control panel.

Both the analog and digital models may be configured with an internal gas sensor or a remote refrigerant sensor (dongle). The internal sensor model is ideal for mounting flush with the wall. The remote refrigerant sensor model has a 9m / 29.5ft dongle cable that is ideal for use in packaged terminal air conditioner (PTAC) applications.

 

 

Target Gas
Gas Sensors
Carbon dioxide (CO2), Carbon monoxide (CO), Formadehyde (CH2O), TVOCs, Refrigerants
Target Other
Sensors
Particulates (user selectable 1PM, 2.5PM or 10PM)
RH & Temperature
Mechanical
Enclosure
White ABS / Polycarbonate, low profile with mounting plate
Weight
400 g / 14 oz
Size
127.7 x 119 x 40 mm 5.0 x 4.7 x 1.6 in
Dongle Cable Length
9 m / 29.5 ft (available with the CGAS-AP-RD and CGAS-DP-RD models)
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
Audible Alarm
none
Input/Output
Analog Output (CGAS-AP models)
One 4 - 20 mA analog signal used for gas reading
Digital Output (CGAS-DP 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)
RH & Temperature (Option -RHT)*
User selectable units DegC or DegF
Relay (Option -RLY)**
One SPDT dry contact, rated 30 volts, 2 amps max
Electrical
Power Requirement
16-30 VDC, 3 W, Class 2
12-27 VAC, 50-60 Hz, 3 VA, Class 2
Wiring (analog)
VDC (or ground referenced AC): 3-conductor 18 AWG (or larger) shielded, stranded within conduit
VAC 4-conductor shielded 18 AWG stranded within conduit
Wiring (digital)
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)
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
Analog Models
CGAS-AP-CO2-5K
Internal infrared carbon dioxide (CO2) sensor (0 - 5,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-CO2-5%
Internal infrared carbon dioxide (CO2) sensor (0 - 5% vol), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-CO
Internal electrochemical carbon monoxide (CO) sensor (0 - 200 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-CH2O
Internal electrochemical formaldehyde sensor (0 - 5 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-PM
Internal, user selectable PM1, PM2.5 (default) or PM10 Particulate sensor, no gas sensor, LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology (can use analog output back to a controller)
CGAS-AP-SLP
Internal PID TVOC sensor (0 - 30 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-SR410A
Internal solid state refrigerant (R410A) sensor (0 - 2,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-SR507A
Internal solid state refrigerant (R507A) sensor (0 - 2,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-RD
Single channel, set up to accept a remote dongle style (ESH-B) solid state refrigerant sensor, LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-AP-STVOC
Internal solid state TVOC sensor (0 - 500 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology
Digital Models
CGAS-DP-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, plug & play smart sensor technology
CGAS-DP-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, plug & play smart sensor technology
CGAS-DP-CO
Internal electrochemical carbon monoxide (CO) sensor (0 - 200 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-CH2O
Internal electrochemical Formaldehyde sensor (0 - 5 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-PM
Internal, user selectable PM1, PM2.5 (default) or PM10 Particulate sensor, no gas sensor, LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-SLP
Internal PID TVOC sensor (0 - 30 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-SR410A
Internal solid state refrigerant (R410A) sensor (0 - 2,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-SR507A
Internal solid state refrigerant (R507A) sensor (0 - 2,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-RD
Set up to accept a remote dongle style (ESH-B) solid state refrigerant sensor, LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-STVOC
Internal solid state TVOC sensor (0 - 500 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-CO-CO2-5K
Dual channel, internal carbon monoxide sensor and (0 - 200 ppm) carbon dioxide sensor (0 - 5,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-CO-CO2-5%
Dual channel, internal carbon monoxide sensor and (0 - 200 ppm) carbon dioxide sensor (0 - 5% vol), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-CO2-5K-PM
Dual channel, internal carbon dioxide sensor (0 - 5,000 ppm) and internal, user selectable PM1, PM2.5 (default) or PM10 Particulate sensor, LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-CO2-5%-PM
Dual channel, internal carbon dioxide sensor (0 - 5% vol) and internal,user selectable PM1, PM2.5 (default) or PM10 Particulate sensor, LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
CGAS-DP-CO-PM
Dual channel, internal carbon monoxide sensor (0 - 200 ppm) and internal, user selectable PM1, PM2.5 (default) or PM10 Particulate sensor, LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, plug & play smart sensor technology
Note: other refrigerant gases may be available upon request
CO sensor UL2075 Approved in models without Option -RHT
Remote Sensors
ESH-B-SR404A
Remote dongle style solid state refrigerant sensor R404A (0 - 2,000 ppm)
ESH-B-SR410A
Remote dongle style solid state refrigerant sensor R410A (0 - 2,000 ppm)
Factory Options
-RHT*
RH & Temperature sensor
Available with all models. Analog models will output signal for gas reading.
-RLY**
1 SPDT dry contact relay rated 30 volts, 2 amps max,digital model
Available with all models except dual channel models
-RHT-RLY
Available with single channel CO or CO2 models
NOTE: Analog models have one analog output. The factory default analog output is the gas reading.