Honeywell C7232A

CO2 sensors are used to control ventilation systems and monitor indoor air quality. They can be stand-alone sensors or integrated into thermostats or air quality monitoring platforms.

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Honeywall C7232A Carbon Dioxide (C02) Sensor Image

Honeywell C7232A

The C7232A is a carbon dioxide sensor with display that can be used for long-term monitoring and demand control ventilation.

Hub Highlights:

Basic display of CO2 value
Easily connected to any building automation system for monitoring or ventilation control
Good performance on Hub CO2 accuracy testing protocols
Does not include additional sensors

Last Edited on: Sep 30, 2021

Model Number	C7232A
Sensor Type	Non-dispersive infrared (NDIR) Manufacturer: Senseair
Power Input	24 VAC/VDC ± 20%
Outputs	0-10 VDC
Altitude Correction Method	Unknown
Measurement Range	0-2,000 ppm
Reported Accuracy	±(30 ppm + 2% of reading)
Display of C02 Value	On Device
Uses Automatic Background Calibration (ABC)	Yes

Last Edited on: Sep 30, 2021

Model	C7232A
Date of Test (including warm-up period if device uses automatic background calibration)	November 2-17, 2020
Sample Size	10
Error of CO2 measurement @1100 ppm (average) (ppm)	-79
Error of CO2 measurement @ 1100 ppm (standard deviation) (ppm)	3
Noise of CO2 measurement @1100 ppm (Average) (ppm)	1
Accuracy Metric	<±125ppm
CO2 Full results	See Box Plot
Operating Power for Sensor (watts)	0.24
Operating Power for Gateway (watts)	N/A
Operating Power for Sensor + Gateway (watts)	0.24
Operating Power Metric	<±0.5 W
Maximum Number of Sensors per Gateway	N/A

Last Edited on: Sep 30, 2021

Data Source: Staff at the UC Davis Western Cooling Efficiency Center

User Interface

Can the sensor display the CO2 level to occupants? If yes describe.

Yes - Display on the sensor

User Interface

Can the sensor display a visual indicator to occupants that the CO2 level has exceeded a programmed threshold? If yes, describe (what does the indicator look like, what the default thresholds are, and can the threshold be changed).

Reporting Capabilities

Can the sensor alert facilities (such as an email, text, or call phone application) when the CO2 level has exceeded a programmed threshold? If yes, describe (what does the indicator look like and can the threshold be changed).

Yes - Alerts can be generated when sensor is connected to a building automation system. Alert functionality is determined by building automation system manufacturer.

Reporting Capabilities, Integration Capabilities

How can the CO2 sensor data be logged? If proprietary software, describe (what type of account is needed, what logging intervals are available, what does it look like, and describe its capabilities including data download capabilities).

Logging data is dependent on functionality of BAS that sensor is connected to

Integration Capabilities

Can the CO2 sensor interface with a building automation system (BAS) or demand control ventilation (DCV) system controller? If yes, describe if integration capabilities are vendor specific.

Yes - any vendor

Integration Capabilities

If sensor can interface with a BAS or DCV system controller, is additional hardware required?

Installation

Does the sensor require specialized software for installation? If yes, describe

Installation

Does the sensor require specialized training for installation? If yes, describe

Operation

Does the sensor require on-going maintenance? If yes, describe?

Operation

Does the sensor require service contracts for ongoing data access? If yes, describe

No - If sensor is connected to BAS, service contracts may be required for BAS functionality