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MH-Z19E NDIR CO2 Sensor for HVAC and IAQ

  • • Target gas: Carbon Dioxide, CO2
  • • Range: CO2(400-2000ppm/400-5000ppm/400-10000ppm)
  • • Application:HVAC refrigeration,Air cleaner device,Indoor air quality monitoring,Smart home,Ventilation system,School

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  • Principle Introduction
Principle Introduction:
 MH-Z19E NDIR infrared gas module is a common type, small size sensor, pins type or terminal type, 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 UART output and PWM 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-Z19E NDIR infrared gas module is widely used in
*HVAC refrigeration
*HVAC control panel/Thermostat
*Indoor air quality monitoring.
*Smart home appliances
*Air purification equipment
*CO2 detector/Monitor

Technical parameters :

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

Main parameters         Table1.


 Model No.

MH-Z19E

Detection Gas

CO2

Working voltage

5.0±0.1V DC

Average current

<40mA (@5V power supply)

Peak current

125mA (@5V power supply)

Interface level

3.3 V(Compatible with 5V)

Detection Range

400~10000ppm(optional, see table2.)

Output signal

Serial Port (UART)(TTL level 3.3V)

PWM

Preheat time

1 min

Response Time

T90 <120s

Working temperature

-10 ~ 50℃

Working humidity

0 ~95% RH (No condensation)

Storage temperature

-20~60 ℃

Weight

5 g

Lifespan

>10 years
​

Detection range and accuracy Table2.

Detection Gas

Formula

Detection Range

Resolution

Accuracy

Carbon Dioxide

CO2

400~2000ppm

1ppm

± (50ppm+5% reading value)

400~5000ppm

400-10000ppm
Reference Circuit :
 

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