• • Target gas: Carbon Dioxide
  • • Range: CO2(0-2000ppm/0-5000ppm)
  • • Application:HVAC,building ventilation system, indoor air quality monitoring system

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  • Principle Introduction
Principle Introduction:
Measuring range:0~5%VOL optional
Working Voltage: 4.5 V ~ 5.5V DC
Output modes: UART, analog voltage signal, PWM wave

MH-Z19 NDIR infrared gas module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO 2 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 analog voltage output. It is developed by the tight integration of mature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design.

Applications :
MH-Z19 NDIR infrared gas module is widely used in the HVAC refrigeration and indoor air quality monitoring.
Technical parameters :
Working voltage 4.5 V ~ 5.5V DC
Average current < 85 mA
Interface level 3.3 V
Measuring range 0~5%VOL optional
Output signal PWM
0.4-2V DC
Preheat time 3min
Response Time T90 < 90s
Working temperature 0℃ ~ 50℃
Working humidity 0~95%RH
Weight 15 g
Lifespan >5 year
Dimension 57.5×34.7×16mm(L×W×H)
Reference Circuit :

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