Heat Conduction Combustible Gas Sensor MD61

  • MD61(2).png
  • MD61(2)(1).png


The MD heat conduction gas sensor is made according to the principle that the total thermal conductivity of the mixed gas changes with the content of the gas to be analyzed. The detection element and the compensation element are paired to form an arm of the bridge. The resistance of the detection element becomes smaller when it encounters a gas with a larger thermal conductivity than air, and when it encounters a gas with a smaller thermal conductivity than air (air background), the output voltage of the bridge changes, and the voltage variable increases with the gas concentration. It increases proportionally, and the compensation element plays a role of reference and temperature compensation.


* Linear output signal

* Good reproducibility and reliable performance

* Fast response & Long lifespan

* Resistant to toxicosis

* Detecting without Oxygen or short of oxygen

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Specification Product Size

Technical Data Sheet

Part no. MD61
Type Thermal conduction
Standard package Metallurgical powder network
Detection Gas Methane, hydrogen, inert gases
Detection range 0~100%
Working Voltage (V) 3.0±0.1 (DC)
Working current(mA) ≤120 mA
Sensitivity (mV/10%CH4) ≥15
linearity ≤8%
Response time (90%) ≤10 s
Resume time (90%) ≤30 s
Using Environment -20-+50℃, <95%RH
Storage Environment -20 - +70℃, <70%RH
Dimension(mm) 19×9.5×14
Explosion-proof mark ExdibⅠ


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As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


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