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MQ135 MQ-135 Gas Sensor For Domestic Gas Alarms Portable Gas Detectors
MQ135 MQ-135 Gas Sensor For Domestic Gas Alarms Portable Gas Detectors
Specifications
Model Number :
MQ135 MQ-135
Place of Origin :
CN
MOQ :
1PCS
Price :
Negotiable
Payment Terms :
L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :
5000PCS
Delivery Time :
5-8 work days
Packaging Details :
Standard packaging
Heater Voltage (VH) :
5.0V±0.1V (AC or DC)
Heater Resistance :
30Ω±3Ω
Heater Consumption :
≤950mW
Output Voltage (Vs) :
2.0V - 4.0V (in 400ppm H₂)
Concentration Slope (α) :
≤0.6 (R₄₀₀ ppm/R₁₀₀ ppm H₂)
Standard Test Conditions :
Temperature 20℃±2℃, humidity 55%±5% rh
Description

MQ135 Gas Sensor For Domestic Gas Alarms Portable Gas Detectors

Working Principle:

The sensitive material of the MQ135 gas sensor is SnO₂, which has lower conductivity in clean air. When the target pollution gas exists, the sensor's conductivity increases with the rise of the gas concentration. Users can convert the change of conductivity into the corresponding output signal of the gas concentration through a simple circuit.

Features:

  • Wide - range detection, which can detect various gases such as ammonia, nitrogen oxides, alcohols, benzene, smoke, and CO₂.
  • High sensitivity and fast response.
  • Stable performance and long service life.
  • Simple drive circuit, with both analog and digital output options, and the sensitivity can be adjusted through the on - board potentiometer.

Main Applications:

It is widely used in domestic gas alarms, industrial gas alarms, and portable gas detectors, as well as air quality control equipment for buildings and offices.

Structure Description:

The MQ135 gas - sensitive element is composed of a micro - AL₂O₃ ceramic tube, a SnO₂ sensitive layer, a measuring electrode, and a heater, which are fixed in a cavity made of plastic or stainless steel. The packaged gas - sensitive element has 6 pin - shaped pins, 4 of which are used for signal extraction, and 2 are used for providing heating current.

Parameter

Symbol

Value

Unit

Remarks
Loop Voltage Vc 5.0V ± 0.1V DC --
Heater Voltage VH 5.0V ± 0.1V AC or DC --
Load Resistance RL Adjustable Ω --
Heater Resistance RH 30Ω ± 3Ω -- At room temperature
Heater Power Consumption PH ≤ 950 mW --
Detection Range -- 10 - 1000 ppm For ammonia, toluene, hydrogen, smoke, etc.
Sensitivity S Rs (in air)/Rs (in 400ppm H₂) ≥ 5 -- --
Output Voltage Vs 2.0 - 4.0 V In 400ppm H₂
Concentration Slope α ≤ 0.6 -- R₄₀₀ ppm/R₁₀₀ ppm H₂
Operating Temperature Tao - 10 - 45 ℃ --
Storage Temperature Tas - 20 - 70 ℃ --
Relative Humidity RH ≤ 95 % --
Standard Test Temperature -- 20℃ ± 2℃ -- --
Standard Test Humidity -- 55% ± 5% -- --
Oxygen Content -- ≥ 18 %

21% is optimal, which will affect the initial value,

sensitivity and repeatability of the sensor
Pre - heat Time -- ≥ 48 h --

MQ135 MQ-135 Gas Sensor For Domestic Gas Alarms Portable Gas Detectors

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MQ135 MQ-135 Gas Sensor For Domestic Gas Alarms Portable Gas Detectors

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Product Detail
Model Number :
MQ135 MQ-135
Place of Origin :
CN
MOQ :
1PCS
Price :
Negotiable
Payment Terms :
L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :
5000PCS
Contact Supplier
MQ135 MQ-135 Gas Sensor For Domestic Gas Alarms Portable Gas Detectors

ShenzhenYijiajie Electronic Co., Ltd.

Verified Supplier
4 Years
guangdong, shenzhen
Since 2006
Business Type :
Manufacturer, Trading Company
Main Products :
Oxygen Gas Sensor, Electrochemical Gas Sensor, Gas Sensor
Total Annual :
900000-1000000
Employee Number :
50~80
Certification Level :
Verified Supplier
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