Honeywell Duct Mount C02 Sensor with LCD

FEATURES

The C7232B Sensor and Controller is a stand-alone carbon dioxide (CO2) sensor for use in determining ventilation necessity with HVAC controllers. The C7232B measures the CO2 concentration in the duct. The C7232B is 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.

• Used for CO2 based ventilation control.
• LCD that provides sensor readings and status information.
• Non-Dispersion-Infrared (NDIR) technology used to measure carbon dioxide gas.
• Device provides voltage or current output based on CO2 levels.
• Models available with SPST relay output.
• Automatic Background Calibration (ABC) algorithm based on long-term evaluation reduces required typical zero-drift check maintenance.

SPECIFICATIONS

• Sensor Performance Ratings:
• Response Time: 1 min.
• Carbon Dioxide Sensor:
• Operation: Non-dispersive infrared (NDIR).

Sampling: Diffusion.
• Range: 0 to 2000 ppm
• Accuracy: ± (30 ppm +2% of reading) (This product complies with CA Title 24, Part 6, CEC Standard for Residential and Non-Residential Buildings—2016, when installed according to instructions.)

• Power Supply: 24 Vac/dc ±20%, 50/60 Hz (Class 2).
• Maximum Power Consumption: 3W.
• Peak Current (at 20 ms): 600 mA.

Relay:
• Configuration: Shipped N.O.
• Contact Rating: 1A at 50 Vac/24 Vdc.
• Minimum Permissible Load: 1 mA at 5 Vdc.

Linear Analog Output:
• Voltage: 0/2-10 Vdc (resistive load greater than
• 5000 ohms).
• Current: 0/4-20 mA (resistive load less than 500 ohms).

• Analog: 0-10 Vdc (Default: 2-10 Vdc, 500 to 1500 ppm).
• Relay: Normally Open SPST (Default: Close at 800 ppm).

Temperature:
• Operating: +32°F to +122°F (0°C to +50°C).
• Storage: -4°F to +158°F (-20°C to +70°C).

• Relative Humidity (non-condensing): 0 to 95 percent.
• CO2 Pressure Dependence: 1.4% change in reading per 1 kPa deviation from 100 kPa.
• Wiring Connections: 20-gauge cable with six 6 in. lead wires.
• Mounting: Sheet metal duct with a sampling tube.
• Automatic Background Calibration (ABC) default: On.
• Calibration: This product is factory calibrated. No field calibration is necessary for the life of this product

Approvals:
• CE
• Underwriters Laboratories Inc. Listed, File No. E4436
• cUL
• Flammability Rating, UL94-5V
• C7232B: NEMA3