so2 sensor

SO2 – Sulfur
Dioxide Sensor
20 PPM Pinned

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prana air gas sensors board
sulfur dioxide sensor

Sulfur Dioxide (SO2) Sensor:

Prana Air SO2 sensors have been created with finesse and precision for consumer and industrial-grade safety monitoring. The sensor comes packed with the cutting edge technology of electrochemical detection of the highly-toxic SO2 gas. The ultra-thin, compact, and cost-effective package allows easy-inclusion into all kinds of SO2 monitoring and regulatory solutions. Our sensors, with their precision, have the potential to revolutionize the scenario of environmental and health-based monitoring of air toxins. These robust sensors, due to high operational life, find diversified applications in residential, industrial, and commercial instruments.



The sensor’s ultra-thin package and small size enables it to get lodged in any kind of device or instrument. It is suitable for hand-held devices as well as real-time outdoor monitoring.


The highly accurate sensor comes with a long-lasting operational life of up to 10 years. Install it in your instrument once and forget all your sensor-related worries.

Highly Responsive

The average response time of this SO2 sensor is 15 seconds making it robust and swift. Hence, it is an apt choice for real-time monitoring.

Energy Efficient

It requires low power input (0 mW at 0 mV bias) to function. Therefore, the overall energy consumption of the device decreases due to this energy-saving sensor.

Individual Calibrated

Individual calibration service procures readings with the highest accuracy for every device the sensor is put in.

RoHS Compliant

Our SO2 sensor is synchronous to the Restriction of Hazardous Substances Directive (RoHS) for electrical and electronic equipment.

Technology We Use

What technology is being used in the device

Prana Air SO2 sensors work on the principle of the electrochemical gas sensing technique. These sensors are amperometric fuel cells designed to quantify the concentration of a gaseous toxin.

There are three principal components in this type of sensor- a working (sensing) electrode, a counter electrode, and an ion conductor that acts as a bridge between the electrodes. The toxic gas, SO2 is detected on the working electrode and gets oxidized with water molecules. This oxidation results in the formation of electrons and protons as by-products.

The directional flow of electrons through the wire creates an electric current that is directly proportional to the concentration of gas. The gas sensor works by measuring this current flow between the two sensors.

prana air so2 sensor

Where is it applicable?

prana air sulfur dioxide sensor

SO2 Sensor Dimension

Prana Air SO2 Sensor Dimensions

Technical Specification

prana air so2 sensor specification

Technical Indicators of Sensors

Parameter Value
Measurement Range 0 to 20 ppm
Lower Detection Limit < 20 ppb (instrumentation dependent)
Resolution < 20 ppb (instrumentation dependent)
Repeatability < +/- 3 % of reading
Response Time < 15 seconds
Sensitivity @ 200 mV bias 25 +/- 10 nA/ppm
Expected Operating Life > 5 years (10 years @ 23+/-3C; 40+/-10% RH)
Operating Temperature Range -30 to 50 C (-20 to 40 C continuous)
Operating Humidity Range – non-condensing 0 to 100% RH (15 to 95% continuous)
Power Consumption 10 to 50 uW (circuit & ambient SO2 dependent)

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Air quality monitoring equipment

Air Quality Monitoring

application of so2 for Industrial

Industrial Safety

application of so2 Automobile

Automobile & Locomotive

application of so2 for Power plants

Regulatory Instruments at Power Plants
& Oil Refineries

application of so2 for vehicle emissions

Vehicular Emission Detectors
& Controllers

application of so2 sensor for Retrofit devices for dg sets

Retrofitting Devices
For DG Sets

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