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MH-Z14A NDIR CO2 SENSOR

MH-Z14A NDIR Infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature sensor can do temperature compensation; and it has digital output and PWM output. This common type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optical circuit design and superior circuit design

Working Principle

MH-Z14A NDIR Infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependent and long life. Built-in temperature sensor can do temperature compensation; and it has digital output and PWM output. This common type infrared gas sensor is developed by the tight integration of mature infrared absorbing gas detection technology, Precision optical circuit design and superior circuit design

Performance

Application

Product Parameters

Working voltage 4.5 V ~ 5.5V DC
Average current <60mA(@5V input)
Peak current 150 mA(@5V input)
Interface level 3.3 V(5V compatible)
Measuring range 0~10000ppmoptional(refer to table 2)
Output signal Serial Port (UART, TTL level)
PWM
Analog output(DAC), 0.4-2V
Preheat time 3min
Response Time T90<120s
Working temperature 0℃ ~ 50℃
Working humidity 0~90%RH(no condensation)
Weight 15g
Lifespan >5 year
Target Gas Measuring Range Accuracy
Carbon Dioxide (CO2) 0~2000ppm ±(50ppm +3%reading value)
0~5000ppm
0~10000ppm ±10% reading value

Application Solution

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