NDIR Methane Sensor MH-441D


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Summary:

MH-441D methane gas sensor is a general intelligent infrared gas sensor, which uses the principle of non-dispersive infrared (NDIR) to detect methane gas in the air, MH-411D has the advantages of no oxygen dependence and good selectivity. MH-441D is a compact and high-performance sensor that combines the mature infrared absorption gas detection technology with micro-machining and sophisticated circuit design. It is easy to use, can be directly used to replace catalytic combustion elements, and is widely used in various occasions where methane and explosive gases are present.

Feature:

* High sensitivity, high resolution, low power consumption, Fast response time
* Output method: UART, analog voltage signal
* Temperature compensation, excellent linear output
* Excellent stability and long service life                        
* Anti-water vapor interference, no poisoning, can directly replace the catalytic combustion sensor 

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APPLICATION

Underground Pipe Network

Urban underground pipe gallery is a municipal public facility that implements unified planning, design, construction and maintenance, and is built in the city underground for laying municipal public pipelines.During the construction of the urban underground comprehensive pipe gallery, the workers are actually working in a closed environment or a closed space.

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Pollution Source Detection

The septic tank is a device for processing feces and filtering. The principle is that the solidified material is decomposed at the bottom of the pool, and the hydrated objects in the upper layer enter the pipeline and flow away, preventing the pipeline from clogging and providing solidified objects (feces and other garbage)with enough time to hydrolyze.

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Smart Breeding

Livestock and poultry farming is the major emission of ammonia gas, and these ammonia gas react with the oxidation products of sulfur dioxide and nitrogen oxides to generate ammonium nitrate and ammonium sulfate, which are an important source of PM2.5.

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Smart Agriculture Greenhouse

Compared with traditional agriculture, greenhouse planting is an intensive industry. In the current greenhouse projects, the main economic crops are vegetables, flowers, medicinal materials, etc. For agricultural planting, greenhouses can provide a relatively stable and controllable planting environment to improve the stable yield and quality assurance of crops. At the same time, greenhouse planting can also achieve mechanized control and reduce labor costs.

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CO2 Detector

Most people spend about 90% of their time indoors. The air we breathe indoors and our health are affected by many factors, including outdoor air quality, the movements of people indoors, and the design, construction, operation and maintenance of buildings.

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Indoor Air Quality Monitoring

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.

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Underground Mine Gas Alarm

Gas safety detection through the whole process of mine production, processing and transportation, such as the detection of mashgas(methane), carbon monoxide (CO), hydrogen sulfide (H2S), carbon dioxide (CO2), sulfur dioxide (SO2), oxygen (O2), etc.

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PARAMETER

Specification Product Size

Technical Data Sheet

Model No. MH-441D
Detection Gas Methane (CH4)
Working Voltage 3.6~5.0VDC (Need to be powered by safety barrier)
Average Current <85mA
Interface Level 3.0V
Detection range 0~10%vol(selectable,  refer fig2.)
Output Signal UART(3.0V)
0.4~2.0VDC
Warm-up time 3 min
Response time T90<30 seconds
Working Temperature -20°C ~ 60°C
Working Humidity 0~95%RH (no condensation)
Sizes Φ20×22.2mm
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

Detection range and accuracy 

Detection Gas Formula Detection Range Resolution Decimal place Notes
Methane CH4 0~5.00% Vol 0.01% Vol 2 decimal places Temperature compensation
0~10.00% Vol 2 decimal places
100%LEL 1%LEL None

 

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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.

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FAQ

Here you can learn about the selection guide, common technical problems, packaging, transportation, MOQ, delivery time, etc.

What is the Service Life of Mq Series Sensors?

Usually, the life span is about ten years, and the actual application is related to the use environment and method of use.

Why Does the Sensitivity of the Semiconductor Sensor Reduce During Use?

There are five main reasons: 1) Organosilicon, sulfide, phosphide, chlorine (fluorine) compound, alkali metal, etc. will poison the sensor; 2) The power supply voltage of the sensor has changed; 3) The sensor has been used for too long (Exceeded service life); 4) The test gas concentration is too high; 5) The sensor is subjected to severe vibration or destructive external conditions.

Can the Catalytic Sensor Be Made into a Digital Display?

MC series catalytic products have good linearity and can be made into digital display products.

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