NDIR Precise CO2 Sensor

MH-Z19 CO2 Carbon dioxide gas sensor, serial output, 5000ppm

(If you need better precision than MG811)

MH-Z19 carbon dioxide gas sensor (hereinafter referred to as the sensor) is a generic type, small sensors, using non dispersive infrared (NDIR) principle to detect the air in the presence of CO2, with good selectivity and no oxygen dependence and long service life. Built in temperature compensation, with digital output and waveform output, easy to use. The sensor is a high performance sensor which is combined with the mature infrared absorption gas detection technology and the precise optical path design and the excellent circuit design.
Sensor characteristics
High sensitivity, high resolution, low power consumption
Provide UART, PWM waveform, such as a variety of output mode
Temperature compensation, excellent linear output
Excellent stability
Long service life
Anti water vapor interference, not poisoning
Main application
Can be widely used in HVAC refrigeration and indoor air quality monitoring.
Technical index
Product model MH-Z19
Detecting gas carbon dioxide
Operating voltage 3.6 ~ 5.5 DC V
Average current less than 18 mA
Interface level 3.3 V
Measurement range of 0 ~ 0.5% Vol range of optional
Output signal UART
Preheat time 3 min
Response time T90 < 60 s