Winsen MC109 Catalytic Flammable Gas Sensor


In stock

SKU: 1278793
  1. Product: Flammable Gas Sensor
  2. Model: MC109
  3. Sensor Type: Catalytic
  4. Standard Encapsulation: Metal, Metallurgy powder mesh
  5. Working voltage(V): 2.5±0.1
  6. Working current(mA): 100±10


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Brand: Winsen
Category: Gas and Dust Sensor

Winsen Electronics, research, design, and produce MC109 catalytic combustion/flammable gas sensor, 0~100%LEL detection range gas sensor.
MC109 adopts catalytic combustion principle, and its two arms of electric bridge consists of a test element and a compensate element. The resistance of the test element rises once it meets the combustible gases, in the same time, the output voltage of the bridge changes and the voltage variation rises in direct proportion to the gas concentration. The compensate element, as a conference, has the function of compensating temperature and humidity.


It is widely used in industrial occasion to detect the concentration of hydrogen, ethyne, gasoline, VOC such as alcohol, ketone, benzene.


  1. The bridge output is linear
  2. Quick response
  3. Good repeatability and selectivity
  4. Good stability
  5. Excellent resistance to the interference of H2S gas and organosilicon.

Package Includes:

1 x Winsen MC109 Catalytic Flammable Gas Sensor

SKU: 1278793 Category:


Sensor Type


Standard Encapsulation

Metal, Metallurgy powder mesh

Working voltage(V)


Working current(mA)




Measuring range

(%LEL) 0~100

Response Time (90%)


Recovery Time (90%)


Working Environment

-40~+70℃,less than 95%RH

Storage Environment

-20~+70℃,less than 95%RH

Anti-explosion Mark


Shipping Weight 0.001 kg
Shipping Dimensions 4 × 3 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China