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Honeywell C7632 Carbon Dioxide (CO₂) Sensors

Carbon Dioxide (CO₂) Sensors

The Carbon Dioxide (CO₂) Sensors offer a fixed 0-2000ppm and fixed 0-10Vdc output. No adjustments are necessary. Like the C7232 sensors, these are for use in determining ventilation necessity with HVAC controllers.

The sensor measures the CO₂ concentration in the ventilated space or duct. The sensors are used in ventilation and air conditioning systems to control the amount of fresh outdoor air supplied to maintain acceptable levels of CO₂ in the space.

• Non-Dispersion-Infrared (NDIR) technology used to measure carbon dioxide gas
• Gold-plated sensor provides long-term calibration stability
• Fixed 0-2000ppm, fixed 0-10Vdc output
• Used for CO₂ based ventilation control (Demand Control Ventilation (DCV))
• Automatic Background Calibration (ABC) algorithm based on long term evaluation reduces required typical zero-drift check maintenance

Select a link under the "item" tab below to order.

Cat #IncludesMountingDisplayinchmm
C7632A1004Honeywell LogoWall mountNo4 1/8 in high x 3 7/8 in. wide x 1 1/16 in. deep104mm high x 99 mm high x 27 mm deep
C7632B1002Honeywell LogoDuct mountNo5 5/8 in. high x 3 5/16 in. wide x 1 13/16 in. deep x plus 8 in. long sensing tube142 mm high x 84 mm wide x 87 mm deep x plus 203 mm sensing tube
Models C7632 Sensor and Controller. A stand-alone carbon dioxide (CO₂) sensor with one 0-10 Vdc analog output
C7632A Wall mount model
C7632B Duct mount model
Ambient Ratings
Operating Temperature +32°F to +122°F (0°C to +50°C)
Temperature Storage -4°F to +158°F (-20°C to +70°C)
Automatic Background Calibration (ABC) default On.
Electrical Ratings
Power Supply 24 Vac ±20%, 50/60 Hz (Class 2)
Maximum Power Consumption Average: 1W
Peak: 2W
Peak Current (at 20 ms) 300 mA
Linear Analog Output 0-10 Vdc
C7632A Vertical surface with standard single-gang junction box
C7632B Sheet metal duct with a sampling tube
CO₂ Pressure Dependence 1.6% change in reading per 1 kPa deviation from 100 kPa
Output Analog: 0-10 Vdc, 0-2000 ppm (fixed)
Sensor Performance Ratings
Response Time 1 min
Carbon Dioxide Sensor
Operation Non-dispersive infrared (NDIR)
Sampling Diffusion
Range 0 to 2000 ppm (fixed)
Annual Drift ±10 ppm (nominal)
Accuracy ±(30 ppm+2%) at normal temperature/pressure
Wiring Connections
C7632A Terminal block
C7632B 20-gauge cable with three 6 in. leadwires
Approvals CE
Underwriters Laboratories Inc. Listed, File No. E4436
C7632B Flammability Rating, UL94-5V
C7632A NEMA1
C7632B NEMA3

The C7632 Sensor and Controller is a stand-alone carbon dioxide (CO₂) sensor for use in determining ventilation necessity with heating ventilation and air conditioning (HVAC)controllers. The C7632 measures the CO₂ concentration in the ventilated space or duct. The C7632 is used in HVAC systems to control the amount of fresh outdoor air supplied to maintain acceptable levels of CO₂ in the space.

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