cGas Detector for Indoor Public Spaces

For monitoring: Carbon dioxide, Carbon monoxide, Formaldehyde, Methane, 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...

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Key Features

Analog models have one 4-20 mA analog output or 0-10 volt or 2-10 volt output
Digital models have 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
1 SPDT dry contact relay, rated 30 volts, 2 amps max with or without internal buzzer*
Models available with user selectable 1PM, 2.5PM or 10PM particulate sensor
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.

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 vertical terminal air conditioner (VTAC) systems. The remote refrigerant sensor model has a 9m / 29.5ft dongle cable that is ideal for use in packaged terminal air conditioner (PTAC) applications.

Specifications

Target Gas

Gas Sensors

Carbon dioxide (CO2), Carbon monoxide (CO), Formaldehyde (CH2O), Methane (CH4), TVOCs, Refrigerants

Target Other

Sensors

Particulates (user selectable 1PM, 2.5PM or 10PM)

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

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

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)

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 & Buzzer*

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 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 (digital models)

Product Codes

Analog Models

CGAS-AP-CO2-2K

Internal infrared carbon dioxide (CO2) sensor (0 - 2,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, plug & play smart sensor technology

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, 1 internal relay and buzzer, plug & play smart sensor technology

CGAS-AP-CO2-10K

Internal infrared carbon dioxide (CO2) sensor (0 - 10,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, 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, 1 internal relay and buzzer, 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-CCH4-100

Internal catalytic methane sensor (0 - 100% LEL), 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-SPL

Internal PID TVOC low range sensor (0 - 30 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, plug & play smart sensor technology

CGAS-AP-SPH

Internal PID TVOC high range sensor (0 - 300 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-IR410A

Internal infrared refrigerant (R410A) sensor (0 - 2,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, plug & play smart sensor technology

CGAS-AP-IR507A

Internal infrared refrigerant (R507A) sensor (0 - 2,000 ppm), LCD display, 4-20 mA output, 24 VDC or VAC power, 1 internal relay and buzzer, 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-CO2-2K

Internal infrared carbon dioxide (CO2) sensor (0 - 2,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, 1 internal relay and buzzer, plug & play smart sensor technology

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, 1 internal relay and buzzer, plug & play smart sensor technology

CGAS-DP-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, 24 VDC or VAC power, 1 internal relay and buzzer, 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, 1 internal relay and buzzer, 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-CCH4-100

Internal catalytic methane sensor (0 - 100% LEL), 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-SPL

Internal PID TVOC low range 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-SPH

Internal PID TVOC high range sensor (0 - 300 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-IR410A

Internal infrared refrigerant (R410A) 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, plug & play smart sensor technology

CGAS-DP-IR507A

Internal infrared refrigerant (R507A) 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, plug & play smart sensor technology

Note: other refrigerant gases may be available upon request

CGAS-DP-CO2-2K-PM

Dual channel, internal carbon dioxide sensor (0 - 2,000 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-CO2-5K-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-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-CO2-2K

Dual channel, internal carbon monoxide sensor and (0 - 200 ppm) carbon dioxide sensor (0 - 2,000 ppm), LCD display, field configurable BACnet® MS/TP or Modbus® RTU RS-485 output, 24 VDC or VAC power, 1 internal relay and buzzer, 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, 1 internal relay and buzzer, 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, 1 internal relay and buzzer, 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

CO sensor UL2075 Approved in models without Option -RHT

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

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

-RBZ*

1 SPDT dry contact relay rated 30 volts, 2 amps max with internal buzzer rated 90 dB @ 10 cm / 4 in

-RLY**

1 SPDT dry contact relay rated 30 volts, 2 amps max

Important Notes on Options

*Options -RBZ or -RLY can be added to models with an electrochemical, combustible, solid state or PID sensor
*Single channel models with CO2 sensor come with relay and buzzer
*Dual channel models with CO and CO2 sensors come with relay and buzzer
*Dual channels with CO2 and PM sensors cannot have a relay and buzzer
*Analog models have one analog output. The factory default analog output is the gas reading