MQ-135 Air Quality Testing Sensor Module

Parameters: 

• The heating voltage: 24V ± 0.2V (AC · DC) 

• Working current: 150mA 

• Loop voltage: ≤DC15V (maximum DC15V) 

• The output voltage: Default 0-10V (resistance than the corresponding concentration of output) selectable 0-5V 

• Load resistance: 1K (adjustable) 

• Detection concentration range: 10-1000ppm (different gas concentration range different) 

• Clean the air Voltage: ≤1.5V 

• Sensitivity: ≥3% 

• Response time: ≤1S (preheat 3-5 minutes) 

• Response time: ≤30S 

• Component Power: ≤1W 

• The working temperature: -10 ~ 50 oC (nominal temperature 20 oC) 

• Humidity: 95% RH (nominal humidity 65% RH) 

• Life: 5 years 

• Size: 65mm X 45mm X 40mm 

• Weight size: 40g 

Features 

• With analog signal output; 

• The output signal range can be adjusted, optional 0-5V / 0-10V (default), the output signal can be connected to PLC, etc; 

• Corresponding analog output voltage changes, the higher the concentration, the higher the voltage; 

• Liquefied petroleum gas, butane, methane, smoke, etc. have better sensitivity; 

• Long life, good stability; 

• With a rapid response recovery characteristics 

The output is non-linear, only take a value in the range of 0-10V. Because the sensor is a semiconductor sensor, The sensor will output approximately 1-3V when no gas is detected, as the actual output to prevail. 

The output is non-linear, only take a value in the range of 0-5V. Because the sensor is a semiconductor sensor, The sensor will output approximately 0.5-1.5V when no gas is detected, as the actual output to prevail.