MH-Z19C NDIR CO2 Sensor for HVAC and IAQ

  • • Target gas: Carbon Dioxide, CO2
  • • Range: CO2(400-2000ppm/400-5000ppm)
  • • Application: HVAC, building ventilation system, indoor air quality monitoring system

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  • Principle Introduction
Principle Introduction:
MH-Z19Z19C NDIR infrared gas module is a common type, small size sensor, using non non-di spersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, nonnon-oxygen dependent and long life. Built Built-in temperature compensation; and it has UART output and PWM output. It is developed by the tight integration of m ature infrared absorbing gas detection technology, precision optical circuit design and superior circuit design. 
Applications :
 MH-Z19C NDIR infrared gas module is widely used in
* HVAC refrigeration
*Indoor air quality monitoring.
*Smart home appliances
*Air cleaner
Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Product Model MH-Z19C
Target Gas
Working voltage 5.0 ± 0.1V DC
Average current < 40mA(@5V)
Peak current 125mA (@5V)
Interface level 3.3 V(Compatible with 5V)
Measuring range refer to Table 2
Output signal
UART(TTL interface level 3.3V)
Preheat time 1 min
Response Time T90< 120 s
Working temperature
-10 ~ 50 ℃
Working humidity 0~ 95% RH (No condensation)
Dimension 33 mm×20 mm×9 mm (L×W×H)
Weight 5g
Lifespan > 5 years
Reference Circuit :

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