MH-Z19B NDIR CO2 Gas Sensor Module

MH-Z19B NDIR infrared Carbon dioxide gas module

MH-Z19B is a very easy to use Carbon dioxide (CO2) gas sensor module it is used for Air quality Control. It has UART and PWM output so it can directly interfaced to Raspberry pi, Arduino and various other Micro-controllers.

MH-Z19B NDIR infrared gas Sensor module is a common type, small size sensor, using non-dispersive infrared (NDIR) principle to detect the existence of CO 2 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.

Specifications

• Product Model: MH-Z19B
  
• Detection gas: carbon dioxide 
  
• Operating voltage: 4.5 ~ 5.5V DC
  
• Average current: <60mA (@ 5V supply)
  
• Peak current: 150 mA  (@ 5V supply)
  
• Interface level: 3.3V
  
• Measurement range: 0 ~ 1% VOL range optional 
  
• Output signals: UART, PWM, analog output (default 0.4 ~ 2V)
  
• Warm-up time: 3min
  
• Response time: T90 <120s
  
• Operating temperature: 0 ~ 50 ℃
  
• Operating humidity: 0 ~ 95% RH (non-condensing)
  
• Board size: 32.17x19.7x5.25mm
  
• Life expectancy: > 5 years
  

Feature

• High sensitivity, high resolution, low power consumption
  
• Provide UART, PWM waveform and other output methods
  
• Temperature compensation, excellent linear output
  
• Excellent stability
  
• Long life
  
• Water vapor interference, not poisoning
  

Applications

• MH-Z19B NDIR infrared gas module is widely used in
  
• HVAC refrigeration
  
• Indoor air quality monitoring.
  
• Smart home appliances
  
• School
  
• Air cleaner
  

Reference Link

• MH-Z19B CO2 Sensor Datasheet
• CO2 Temperature and humidity sensor using MH-Z19
• Testing MH-Z19 carbon dioxide sensor Module
• Wireless DIY air quality Monitoring Station using Raspberry Pi.