Model: REG-X2212-13CO2
Detection principle: photoconductive effect of semiconductor materials
Characteristics: TO-5 package, single channel/dual channel;Fast response;High detection rate;Window can be customized;
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PbSe sensor is a lead-salt type infrared photoconductive sensor, and its working principle is based on the photoconductive effect of semiconductor materials, thereby converting infrared radiation energy into electrical signals. The PbSe sensor has strong absorption and response in the near and mid-infrared (1.0~5.0um) spectral bands. Using the principle of NDIR gas sensor, it can be applied to the detection of carbon 13 carbon dioxide of Helicobacter pylori breath detector.


13 CO2 Helicobacter pylori breath detector;


  • TO-5 package, single channel/dual channel;
  • Fast response;
  • High detection rate;
  • Window can be customized;



Item Typical Unit
Photosensitive area 2*2 mm
Response wavelength range 1~5 um
Response Time 20 us
Peak responsivity 4*104 V/W
Peak Normalized Detection Rate 1*1010 cm·Hz½/W
dark resistance 1~10
Operating temperature -30~70
Storage temperature -55~70


Sensor Type

Sensor Part no. Window type Center wavelength(um) Transmittance(%) Channel Note
REF-X2212H Sapphire 1~5 >90% Single General type
REG-X2212-12CO2 Narrow Band Filters 4.26 >90% Single Carbon12
REG-X2212-13CO2 4.40 >90% Single Carbon13
REG-X2122-13CO2 4.26+4.40 >90% Dual C12+C13

* 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 UL, 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.