Principle Introduction:
MH-Z85A 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 compensation; and it has digital output, analog voltage output, and PWM output. This commons 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.Technical 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
