What is the measuring range of the SA2-CO?

The SA2-CO is factory programmed for a specific range of sensitivity. Available ranges: 0-10 ppm to 0-4000 ppm. Order-guide models: SA2-CO-10 (0-10.0 ppm (0.1 ppm MDL)); SA2-CO-100 (0-100 ppm (1 ppm MDL)); SA2-CO-200 (0-200 ppm (2 ppm MDL)); SA2-CO-500 (0-500 ppm (5 ppm MDL)); SA2-CO-1000 (0-1,000 ppm (10 ppm MDL)); SA2-CO-4000 (0-4,000 ppm (40 ppm MDL)).

Product Data Sheet

January 2026

Model SA2-CO (CARBON MONOXIDE)

Name: SA2-CO Carbon Monoxide (CO) Smart Sensor Module
Brand: Safeguard Analytics
SKU: SA2-CO

Smart Sensor Modules

Model SA2-CO smart sensor modules are designed to detect and monitor carbon monoxide gas in ambient air. The modules consist of an electrochemical 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

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 TechnologyElectrochemical

Detection MethodDiffusion

Sensitivity Options0-10 ppm to 0-4000 ppm

Response TimeT90 less than 60s

Accuracy±2% of full scale

Zero Baseline Shift< 1% of full scale (-30 °C to +50 °C)

Span Drift< 2% signal loss per year

Input Voltage (Direct)3.3 to 3.6 VDC

Power Consumption10 milliwatts

Signal OutputI²C Protocol

Temperature Range-40 °C to +50 °C

Humidity Range15% to 95% non-condensing

Pressure Range1 atmosphere ± 0.1 atm

Warranty2 Years

¹ Specifications subject to change without notice.

² Power consumption is sensor dependent.

Order Guide

Model SA2-CO-10

0-10.0 ppm (0.1 ppm MDL)

Model SA2-CO-100

0-100 ppm (1 ppm MDL)

Model SA2-CO-200

0-200 ppm (2 ppm MDL)

Model SA2-CO-500

0-500 ppm (5 ppm MDL)

Model SA2-CO-1000

0-1,000 ppm (10 ppm MDL)

Model SA2-CO-4000

0-4,000 ppm (40 ppm MDL)

Model SA2-CO (CARBON MONOXIDE)

Smart Sensor Modules

Specifications1

Order Guide

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Specifications¹