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Flat Semiconductor NH3 Sensor MP-702
Summary:
The MP-702 ammonia gas sensor adopts a multi-layer thick film manufacturing process. The heater and the metal oxide semiconductor gas sensing layer are respectively made on both sides of the micro Al2O3 ceramic substrate, and are packaged in a metal shell. When the detected gas exists in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. This change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.
Feature:
This product has high sensitivity to ammonia gas; it has the advantages of fast response recovery, low power consumption, simple detection circuit, good stability and long life.
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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
| Model | MP702 | ||
| Sensor Type | Semiconductor flat surfaced sensor | ||
| Standard Encapsulation | Metal Cap | ||
| Detection Gas | ammonia | ||
| Detection range | 0～100ppm(NH3) | ||
| Standard Circuit | Loop Voltage | VC | ≤24V DC |
| Heating voltage | VH | 5.0V±0.1V AC or DC | |
| Load resistance | RL | Adjustable | |
| Sensor features in standard test condition | Heating resistance | RH | 95Ω±10Ω(Room Temp.) |
| Heating consumption | PH | ≤300mW | |
| Surface resistance | RS | 1KΩ～30KΩ(in 50ppmNH3) | |
| Sensitivity | S | Rs(in air)/Rs(in 50ppmNH3)≥5 | |
| Concentration slope | α | ≤0.6(R100ppm/R30ppmNH3) | |
| Standard condition of test | Temperature, humidity | 20℃±2℃；65%±5%RH | |
| Standard test circuit | VC:5.0V±0.1V； VH:5.0V±0.1V |
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| Warm-up time | More than 48 hours | ||
Free Guide! Learn the Parameter Differences of Similar Sensors
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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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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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