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Detection Range: 10～1000ppm( ammonia gas, toluene, Hydrogen, smoke)
Application: IAQ Monitor, Domestic gas alarm
Winsen Electronics manufacture air quality sensor and VOC sensor MQ135 for IAQ monitor application.
Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When target pollution gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.
MQ135 gas sensor has high sensitivity to ammonia gas, sulfide, benzene series steam, also can monitor smoke and other toxic gases well. It can detect kinds of toxic gases and is a kind of low-cost sensor for kinds of applications.
It has good sensitivity to toxic gas in wide range, and has advantages such as long lifespan, low cost and simple drive circuit &etc.
It is widely used in domestic gas alarm, industrial gas alarm and portable gas detector.
Main technical parameters:
|Standard Encapsulation||Bakelite, Metal cap|
|Target Gas||ammonia, sulfide, benzene series steam|
|Detection range||10～1000ppm( ammonia gas, toluene, Hydrogen, smoke)|
|Standard Circuit Conditions||Loop Voltage||Vc||≤24V DC|
|Heater Voltage||VH||5.0V±0.1V AC or DC|
|Sensor character under standard test conditions||Heater Resistance||RH||29Ω±3Ω（ room tem.）|
|Sensitivity||S||Rs(in air)/Rs(in 400ppm H2)≥5|
|Output Voltage||Vs||2.0V～4.0V（in 400ppm H2）|
|Concentration Slope||α||≤0.6(R400ppm/R100ppm H2)|
|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|
We provide Worldwide Shipping by DHL, Fedex, Standard shipping (China Post e-Packet) and some other shipping ways on ALL ITEMS!2. SERVICE TRANSIT TIME is provided by the carrier.
- Reference Delivery time (working days):
- DHL:3-7 days
- Fedex:3-7 days
- China Post e-Packet : 15-35 days
Transit times may vary, particularly during the holiday season.
We suggest you choose Expedited Shipping(DHL or FedEx) to ensure the products reach your home fast & safety.3. ORDERS PROCESSED TIMELY after the payment verification.
We do our best to process & ship all orders as soon as possible. Most orders are processed within 48 hours.Note:
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Sometimes you may can't get your package within expected time, please be patient for a few more days. Because we can't control the delivery time or condition when package on shipping. Certainly, we are glad that you can contact us for help. Our goal is to make customer satisfied!
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