NDIR Combustible Gas Sensor MH-742B


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  • MH-742B1.png

Summary:

MH-742B is a universal type intelligent sensor to detect combustible gas,taking advantage of non-dispersive infrared (NDIR) principle. With high selectivity, no oxygen dependence, high performance and long lifespan features, MH-742B also has built-in temperature compensation feature. MH-742B is a compact and high-performance sensor based on infrared absorption of gas detection technology, micro-machining and sophisticated circuit design.

Feature:

* High sensitivity, high resolution, low power consumption

* Output method: UART, analog voltage signal, etc.

* Quick response

* Temperature compensation, excellent linear output

* Excellent stability, Long lifespan

* Anti-poisons, anti-vapor interference

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APPLICATION

Industrial Combustible Gas Alarm

In the process of industrial use of combustible gas, if the combustible gas is in an incomplete combustion state or has gas leakage, etc., the combustible gas will cause personnel poisoning or fire accidents, directly threatening the life safety of personnel. Therefore, it is necessary to install an industrial-grade gas alarm. If the gas exceeds the standard in the on-site environment, the alarm can give an early warning, thereby reducing the probability of danger.

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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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Industrial Exhaust Monitoring

Industrial waste gas refers to the general term for various pollutant-containing gases discharged into the air generated during the fuel combustion and production process in the factory area of the enterprise. These gases enter the human body through the respiratory tract through different routes, some directly cause harm, and some have an accumulation effect, which will seriously endanger human health.

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Petrochemical Industry Toxic Gas Monitoring

The energy provided by the petrochemical industry is mainly used as fuel for automobiles, tractors, airplanes, ships and boilers. At the same time, refinery enterprises provide various chemical raw materials for the chemical industry, and flammable gas also enters thousands of households.

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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

Product Model MH-742B
Gas Detected Combustible gas (see Table 2 for details)
Working Voltage 4.5 V ~ 5.5V DC
Average Current < 100mA
Interface Level 3.3V
Measurement Range 0~100%VOL optional (view table 2)
Output Signal UART
0.4-2V DC
Warm-up Time <2min
Response Time T90 < 30s
Working Temperature -40℃ ~ 70℃
Working Humidity 0 to 95%RH, non-condensing
Dimension Φ39×44mm
Weight 280g
Lifespan >5 years
Protected Class IP54

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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:

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

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Winsen is a factory with over 30,000 square meters area and 500+ production machines which is focusing on sensors development&manufacturing. It has strong R&D strength with more than 100 R&D personnel.

How long is the delivery time?

1-7 days after received payment

How is your packaging condition?

Standard international package with inner box and outer carton.

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