MH-Z19B NDIR CO2 SENSOR

MH-Z19B 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 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 desig

Working Principle

MH-Z19B 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 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 desig

Performance

Application

Product Parameters

Product Model MH-Z19B
Target Gas
CO2
Working voltage 4.5~ 5.5 V DC
Average current < 60mA(@5V)
Peak current 150mA (@5V)
Interface level 3.3 V(Compatible with 5V)
Measuring range refer to Table 2
Output signal
UART(TTL interface level 3.3V)
PWM
DAC(default 0.4-2V)
Preheat time 3 min
Response Time T90< 120 s
Working temperature
0 ~ 50 ℃
Working humidity 0~ 90% RH (No condensation)
Dimension 33 mm×20 mm×9 mm (L×W×H)
Weight 5g
Lifespan > 5 years

Application Solution

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