Brand
:
Robotistan
Product Code
:
11721
Out Of Stock
Notify me when its in stockModel | MQ137 | ||
Sensor Type | Semiconductor | ||
Standard Encapsulation | Bakelite, Metal cap | ||
Target Gas | Ammonia Gas(NH3) | ||
Detection range | 5~500ppm NH3 | ||
Standard Circuit Conditions | Loop Voltage | Vc | ≤24V DC |
Heater Voltage | VH | 5.0V±0.1V AC or DC | |
Load Resistance | RL | Adjustable | |
Sensor character under standard test conditions | Heater Resistance | RH | 29Ω±3Ω(room tem.) |
Heater consumption | PH | ≤900mW | |
Sensitivity | S | Rs(in air)/Rs(50ppmNH3)≥2 | |
Output Voltage | △Vs | ≥0.5V (in 50ppm NH3) | |
Concentration Slope | α | ≤0.6(R200ppm/R50ppm NH3) | |
Standard test conditions | Tem. Humidity | 20℃±2℃;55%±5%RH | |
Standard test circuit | Vc:5.0V±0.1V; VH: 5.0V±0.1V | ||
Preheat time | > 48 hours |