Nitrogen Dioxide


Smart Sensor SA1-NO2

Model SA1 smart sensor modules are designed to detect and monitor various gases in ambient air. The modules consist of a target specific gas detection sensor and a microprocessor-based signal conditioning circuit. Both are housed in a metallic enclosure fitted with gold plated connecting pins. The “Smart Sensor Module” is factory programmed for a specific gas and range of sensitivity. On power up the gas type, measurement range and previous zero and span calibration data points are read by the transmitter facilitating a fully automated startup. The modules can be used with any of Safeguard Analytics gas detection transmitters.

Sensor Technology:


Detector Type:  Electrochemical
Detection Method: Diffusion
Range of Sensitivity: 0-20 PPM
Response Time: T60 ≤ 30s
Accuracy: ± 2% of FS
Zero Drift: < 2% per month
Span Drift: < 2% per month
Temperature Range: -20°C to +50°C; -4°F to 122°F
Humidity Range: 15% to 90% RH non-condensing
Pressure Range: 1 Atm ± .1
Input Power:  ~ 3.5 to 5 VDC
Power Consumption: 2.64 milliwatts
Detector Life Expectancy:  >2 Years
Detector Warranty:  1 Year

SA1-SO2-20Sulfur Dioxide Gas Detector, 0-20 PPM (E-Chem) SmartSensor Module
SA1-NO2-30Nitrogen Dioxide Gas Detector, 0-30 PPM (E-Chem) SmartSensor Module