Semiconductor CH4 gas sensor – MQ4 methane sensor


Semiconductor CH4 gas sensor Introduction

Semiconductor CH4 gas sensor is a methane sensor developed by JXCT with advanced production process. gas sensor adopts high performance chip, performance is improved significantly. With stainless steel protective net, easy to maintain and use. The semiconductor gas sensor has the characteristics of long life, low cost, simple driving circuit, high resolution and high sensitivity. Widely used in household gas alarm, industrial gas leak alarm, and portable gas detector.

Semiconductor CH4 gas sensor

Semiconductor CH4 gas sensor Features

1, the machine is small in size, light in weight, easy to install, can be mounted in portable, fixed, pipe type and other appearance sensors used.

2, stainless steel protective net, high protection, easy to clean effective protection from particulate matter and impurities, easy to maintain and use.

3, high-performance chip, breakthrough manufacturing process, product performance significantly improved.

4, long service life, low cost, simple driving circuit.

5, high resolution, high sensitivity, fast response speed, strong anti-interference force.

Semiconductor CH4 gas sensor Parameters

Detected gas: methane

Methane detection range: 300-10000ppm

Product type: semiconductor gas sensor

Standard package: Plastic seal

Loop voltage: ≤24V DC

Load resistance: adjustable

Temperature/humidity: 20°C, 2°C; 55% soil 5%RH

MQ4 methane sensor


1. Avoid exposure to volatile silica vapors.

2, avoid sensor exposure to high concentration of corrosive gas.

3, avoid alkali, alkali metal salt, halogen pollution.

4, avoid the sensor contact with water or immersed in water, easy to cause the sensor sensitivity characteristics decline.

5, avoid applying too high voltage, if the voltage applied to the sensor heating is higher than the specified value, even if the sensor has not received physical damage or damage, it will cause damage to the lead/or heater, and cause the sensor sensitive characteristics to decline.


What is CH4 sensor?

A CH4 sensor is a device that measures the concentration of CH4 in the environment, usually with an alarm function. Once the concentration exceeds the limit, it will alarm.

What type of sensor is used to detect CH4 gas?

According to different use environments, there are usually three types: wall-mounted CH 4sensor, portable methane detector, and fixed methane detector.

How to calibrate the CH4 sensor?

Our CH4 sensor has been calibrated before leaving the factory and can be used directly after installation without secondary calibration.

How to obtain the manual of the CH4 sensor?

To protect the patented technical parameters, please contact us for a manual.

How to buy a CH4 sensor?

Please confirm the model and delivery address with the salesperson through a message or online chat. After payment, we will deliver the goods within 24 hours.


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