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MH-Z19D NDIR CO2 SENSOR

MH-Z19D 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.

Working Principle

MH-Z19D 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.

Performance

Application

Product Parameters

Model No.
MH-Z19D
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)
Output signal
Serial Port (UART) (TTL level 3.3V)
PWM
Preheat time
1 min
Response Time
T 90 < 120 s
Working temperature
-10 ~ 50
Working humidity
0 ~ 95% RH (No condensation)
Storage temperature
-20~60
Weight
5 g
Lifespan
> 10 years

Application Solution

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