Products
Toxic Gas Sensor
Application:
Household ammonia gas alarmsProduct characteristics:
This product exhibits good sensitivity to ammonia over a wide concentration range and boasts advantages such as long lifespan, low cost, and simple drive circuitry.Product Description
The MQ-K12 gas sensor uses tin dioxide (SnO2), a gas-sensitive material with low conductivity in clean air. When ammonia is present in the sensor's environment, the sensor's conductivity increases with increasing ammonia concentration. A simple circuit can convert this conductivity change into an output signal corresponding to the gas concentration.
The MQ-K12 gas sensor is highly sensitive to ammonia and is also ideal for monitoring other organic amines (such as trimethylamine and ethanolamine). This sensor can detect a variety of ammonia-containing gases and is a low-cost sensor suitable for a wide range of applications.
Technical indicators
| Model | MQ-K12 | ||
| Sensor Type | Semiconductor | ||
| Standard Encapsulation | Bakelite,Metal cap | ||
| Target Gas | Ammonia Gas(NH3) | ||
| Detection range | 5～500ppm NH3 | ||
| Standard Circuit Conditions | Loop Voltage | Vc | 5.0V±0.1V DC |
| Heater Voltage | VH | 5.0V±0.1V AC or DC | |
| Load Resistance | RL | Adjustable | |
| Sensor character under standard test conditions | Heater Resistance | RH | 30Ω±3Ω(room temp.) |
| Heater consumption | PH | ≤950mW | |
| Sensitivity | S | Rs(in air)/Rs(50ppmNH₃)≥2 | |
| Output Voltage | △Vs | ≥0.5V(in 50ppm NH₃) | |
| Concentration Slope | α | ≤0.6(R200ppm/Rsoppm 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 | Over 48 hours | ||
Basic circuit
Storage time and corresponding aging time
| Storage time | Recommended aging time |
| Under 1 month | no less than 48 hours |
| 1-6 months | no less than 72hours |
| Over 6 months | no less than 168 hours |
Application
Widely applicable to household ammonia alarms, industrial ammonia leak alarms, and portable ammonia detectors.
Production workshop
Certificate Qualification
TenSensor, China's first listed gas sensor company,Tensensor can provide more than 100 varieties of six series including：
semiconductor gas sensor
electrochemical gas sensor
infrared gas sensor
dust sensor
pyroelectric sensor
thermopile sensor, etc.
which can be used for more than 200 kinds of gas and infrared, dust and other indicators detection, widely used in the field of security for detecting gas leakage, noxious gas leakage, smog and fire, the field of family, office and factory for detecting HCHO, VOC, CO2, PM2.5 and so on.
Moreover, the solutions for security, household electrical appliances, consumer electronics, smart home, instruments and meters are available.
For more information about MQ-K12 sensor, please contact account manager.
TEL：0086-0351-5249552
Whatsapp：+86 18335818384
Email：[email protected]
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