Target: CO2
Model: MD62
Characteristics: Good reproducibility and reliable performance
Size: 19×9.5×14

MD62 Manual download
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MD62 gas sensor consists of an active element and a reference element with the same resistance, both elements are placed in a wheatstone bridge circuit, The analyzing gas contents changes, the overall thermal coefficient of mixed gases changed correspondingly; when the active element meet the combustible gas, its resistance become smaller, when It meet other gas, , Its resistance become larger(air background), the bridge circuit output the voltage change, this change increase according to gas concentration, the reference element as a benchmark while for temperature compensation.


Industrial spot for CO2 detecting.


  • Linear output signal
  • Good reproducibility and reliable performance
  • Resistant to toxicosis
  • Detecting without Oxygen or short of oxygen


Detection Gas CO2
Type Thermal conduction
Working Voltage (V) 3.0±0.1 (DC)
Working current(mA) ≤120 mA
Sensitivity (mV/10%CO2) ≥5
linearity ≤5%
Response time (90%) ≤15 s
Resume time (90%) ≤30 s
Using Environment -20-+50℃ <95%RH
Storage Environment -20—+70℃ <95%RH
Dimension(mm) 19×9.5×14
Explosion-proof ExdibⅠ

* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.