Electrochemical NO2 gas sensor – Nitrogen dioxide gas sensor


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Electrochemical NO2 gas sensor Introduction

Electrochemical NO2 gas sensor is a nitrogen dioxide sensor for accurate detection of nitrogen dioxide (NO2) in the range of 0-20 or 0-2000 PPM. The principle of electrochemical detection is adopted. The gas concentration signal is output to the digital signal required by the customer through the patented circuit. Electrochemical NO2 gas sensor has the characteristics of low power consumption, high accuracy, high sensitivity, short response time, superior accuracy and long-term stability.

Electrochemical nitrogen dioxide sensors and infrared nitrogen dioxide sensors have a wide range of applications. Nitrogen dioxide sensors are suitable for chemical plants, refineries, fertilizer production, public facilities, sewage treatment, pharmaceutical, food and beverage, automotive, mining, military and other industries.

Electrochemical NO2 gas sensor

Electrochemical NO2 gas sensor Features

1, small size, light weight

The machine is compact in size, light in weight and easy to install. It can be used in portable, fixed, pipe type and other appearance sensors.

2. High-performance chip

Breakthrough process technology, three electrode structure design product performance significantly improved.

3, temperature compensation function

Built-in temperature compensation function, factory accurate calibration, direct use, no need to use again calibration.

4, high resolution sensitivity

Variable gain amplifier circuit, strong anti-interference ability, the product into the gas detection environment, response speed is fast, after leaving back to zero speed is very fast.

Electrochemical NO2 gas sensor Parameters

Detection gas: nitrogen dioxide

Model: JEC – NO2

Range: 0-20 (default) / 0-2000ppm (optional)

Resolution: 0.1ppm

Response time: T90≤15s

Detection principle: electrochemistry

Accuracy: ≤ reading soil 3% (25°C)

Operating voltage: 5V 2%

Output signal: TTL/ analog voltage/analog current /RS485/RS232

Life expectancy: 1 year

Operating environment: -10~50°C 15%~90%RH Atm 10%

Cross interference: CO, CO2, SO2, NO2, CH4, H2S, etc

Power consumption: ≤ 0.2W

Nitrogen dioxide gas sensor

Product application scope

It is widely used in the production and installation of portable and fixed gas detector. And a variety of gas detection occasions and equipment.



NO2 is nitrogen dioxide, a brown-red, highly reactive gaseous substance. Nitrogen oxide is the general term for nitrogen monoxide, nitrogen dioxide, and other nitrogen oxides, and nitrogen dioxide plays an important role in the formation of ozone. Man-made nitrogen dioxide mainly comes from the release of high-temperature combustion processes, such as exhaust emissions from motor vehicles and power plants. Domestic stoves and gas stoves also produce considerable amounts of nitrogen dioxide.


Nitrogen dioxide tends to accumulate in large quantities in the goaf, mining face, return air tunnel, and other places in underground coal mines. For safety reasons, coal mine enterprises will install NO2 sensor in these places to monitor the nitrogen dioxide gas in real-time. In addition to being used in the coal industry, nitrogen dioxide sensors are also widely used in chemical, meteorological and other industries to monitor the nitrogen dioxide gas content.


A NO2 sensor is an instrument used to detect the concentration of nitrogen dioxide and usually has an alarm function.


The NO2 sensor uses the electrochemical working principle. It works based on the diffusion of NO2 gas into the sensor and converts the measured NO2 concentration into electrical signal output. Although the concentration of nitrogen dioxide is low, it can still be accurately and reliably measured.

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