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MEMS NH3 Sensor GM-802B
Summary:
MEMS NH3 gas sensor is using MEMS micro-fabrication hot plate on a Si substrate base, gas-sensitive materials used in the clean air with low conductivity metal oxide semiconductor material. When the sensor exposed to gas atmosphere, the conductivity is changing as the detected gas concentration in the air. The higher the concentration of the gas, the higher the conductivity. Use simple circuit can convert the change of conductivity of the gas concentration corresponding to the output signal.
Feature:
* MEMS technology, Strong construction
* High sensitivity to NH3 gases
* Small sizes and low power consumption
* Fast response and resume
* Simple drive circuit, Long lifespan
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APPLICATION
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.
Food Storage and Transportation
The intelligent control and precise management of grain bin are the key to realizing safe and efficient grain storage. Using the grain bin sensor to build a smart grain system can save food while reducing the input of manpower and material resources.
Smart refrigerators are constantly innovating in the cross-border integration of different technologies. The addition of food freshness, human body induction, CO2 modules, allowing temperature control, ingredients management, automatic sterilization, intelligent alarm and other functions to continuously refresh the market for reconstructing future life style.
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PARAMETER
Technical Data Sheet
| Part No. | GM-802B | ||
| Sensor Type | MEMS | ||
| Standard Encapsulation | Ceramic | ||
| Detection Gas | NH3 etc. | ||
| Detection Range | 1~300ppm (NH3) | ||
| Standard Circuit Conditions | Loop Voltage | VC | ≤24V DC |
| Heater Voltage | VH | 2.0V±0.1V AC or DC | |
| Load Resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 80Ω±20Ω（room temperature） |
| Heater consumption | PH | ≤45mW | |
| sensitive materials resistance | RS | 1KΩ～30KΩ(in 50ppm NH3 ) | |
| Sensitivity | S | R0(in air)/RS(in 50ppm NH3)≥3 | |
| Concentration Slope | α | ≤0.9(R200ppm/R50ppm NH3 ) | |
| Standard test conditions | Temp. Humidity | 20℃±2℃；55%±5%RH | |
| Standard test circuit |
VH: 2.0V±0.1V VC: 5.0V±0.1V |
||
| Preheat time | Not less than 48 hours | ||
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:
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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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