









NDIR Infrared Refrigerant Gas Sensor MH-441D-454B
Summary:
MH-441D-454B infrared gas sensor is a miniature universal intelligent sensor, which adopts NDIR theory to detect concentration of CH4 in air and has good selectivity, stable performance, long life, also is independent of Oxygen. The inside temperature sensor could be used for temperature compensation. This miniature infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, micro machine workout and superior circuit design.
It is convenient in use and also instead of catalytic component directly, widely used in various occasions with flammable and explosion hazard gas.
Feature:
* High sensitivity, high resolution, fast response
* Output method: UART, analog voltage signal
* Temperature compensation, excellent linear output
* Excellent stability, Long lifespan
* Anti-poisons, anti-vapor interference
* Can replace catalytic type gas sensor directly
APPLICATION
The World Health Organization's "Indoor Air Pollution and Health" pointed out that the current level of indoor air pollution is 5-10 times higher than outdoor pollution, and 4% of global diseases are related to indoor air quality, and about 2 million people die prematurely each year from diseases caused by indoor air pollution.
Didn't Find Your Tarket Application?
Winsen offers tailor-made gas sensor solutions for your industry
PARAMETER
Technical Data Sheet
Technical Parameters
Part Number |
MH-441D-454B |
Detection Gas |
Refrigerant |
Detection Range |
0~5%VOL |
Working Voltage |
3.6~5V DC (Reuqire powered by safety barrier) |
Average Current |
<85mA |
Interface Level |
3.0V |
Output Signal |
UART(3.0V) |
0.4~2.0V DC(Require output by safety barrier) |
|
Warm-up time |
3 min |
Response time |
T90<30 seconds |
Working Temperature |
-20°C ~ 60°C |
Working Humidity |
0~95%RH(no condensation) |
Sizes |
Φ20×22.4mm |
Weight |
35g |
Lifetime |
>5 years |
Defense Grade |
IP54 |
Power, communication terminal Intrinsic safety |
Ui=7.5VDC,Ii=265mA, Pi=0.5W,Ci=10μF,Li=0mH |
Measuring Range and Refrigerant conversion factor
Target Gas |
Molecular Formula |
Measuring Range |
Resolution |
No. of decimal |
Accuracy |
Relativecoefficient |
R32 |
CH2F2 |
0~5.00%Vol |
0.01%Vol |
2 |
±5%F.S(0.00%-1.00%) |
1 |
±10%F.S(1.00%-5.00%) |
||||||
454B |
CH2F2(68.9%) |
0~5.00%Vol |
0.01%Vol |
2 |
±5%F.S(0.00%-1.00%) |
0.91 |
C3H2F4(31.1%) |
±10%F.S(1.00%-5.00%) |
|||||
R410A |
CH2F2(50%) |
0~5.00%Vol |
0.01%Vol |
2 |
±5%F.S(0.00%-1.00%) |
0.81 |
C2HF5(50%) |
±10%F.S(1.00%-5.00%) |
|||||
R134A |
C2H2F4 |
0~5.00%Vol |
0.01%Vol |
2 |
±5%F.S(0.00%-1.00%) |
0.28 |
±10%F.S(1.00%-5.00%) |

Free Guide! Learn the Parameter Differences of Similar Sensors
Wondering how to find the most suitable one for you out of so many sensors? Download our free guide to learn the comparison table of technical parameters.
RELATED PRODUCTS
As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:
RELATED PRODUCTS
As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:
WHY CHOOSE WINSEN
Professional and Trustworthy
Brand Precipitation
Focus on Sensor Field
National Patents
International Advanced Technology
Detection Objects
More Than 300 Kinds
Production Process
Excellence Products
Provide 60+ Countries with Solutions
Serve the Global Market
Cooperate with 300+ well-known Enterprises
More Customer’s Choice
How to choose the right sensor for your project?
We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.
Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.
What is your MOQ?
How is your packaging condition?
What is your warranty term?