Safeguard Analytics
Product Data Sheet
January 2026

Model SA2-CO2 (CARBON DIOXIDE)

Smart Sensor Modules

Model SA2-CO2 smart sensor modules are designed to detect and monitor carbon dioxide gas in ambient air. The modules consist of a non-dispersive infrared gas detection sensor and a micro-processor-based signal conditioning circuit. The signal conditioning circuit includes embedded temperature compensation and advanced detection analytics. Both are housed in a metallic enclosure fitted with gold plated connecting pins.

Gas Type

Range of Sensitivity

Serial Number

Calibration Details

- last zero cal date

- last span cal date

SA2-CO2 SA2 smart sensor module

Calibration Level Configuration

Alarm Point Configuration

Environmental Data / Compensation

"The Smart Sensor Module" is factory programmed for a specific range of sensitivity. On power up, gas type, measurement range, and previous zero and span calibration data points are read by the transmitter, facilitating a fully automated startup. When used with any Safeguard Analytics gas detection transmitter, calibration may be performed on site or remotely, and the module transported to the point of installation pre-calibrated and ready for operation.

Specifications1

Sensor TechnologyNon-Dispersive Infrared
Detection MethodDiffusion
Sensitivity Options1,000 ppm to 100% volume
Response TimeT50 less than 10s, T90 less than 30s
Accuracy±2% of full scale
Zero Baseline Shift< 1% of full scale
Span Drift< 2% signal loss per month
Input Voltage (Direct)3 to 5.0 VDC
Power Consumption< 50 milliwatts
Signal OutputI²C Protocol
Temperature Range-40 °C to +70 °C
Humidity Range0% to 95% non-condensing
Pressure Range1 atmosphere ± 0.1 atm
Warranty5 Years

1 Specifications subject to change without notice.

2 Power consumption is sensor dependent.

Order Guide

Model SA2-CO2-01K
0-1,000 ppm (10 ppm MDL)
Model SA2-CO2-10K
0-10,000 ppm (100 ppm MDL)
Model SA2-CO2-002V
0-2.00 % volume (0.02 % vol MDL)
Model SA2-CO2-005V
0-5.00 % volume (0.05 % vol MDL)
Model SA2-CO2-010V
0-10.0 % volume (0.1 % vol MDL)
Model SA2-CO2-100V
0-100 % volume (1 % vol MDL)
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Pricing quoted per project

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