Intelligent NDIR Infrared CO2 Sensor Module - 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)
* Preheat time: 3 min
* Response Time: T90 < 120s
* Working temperature: 0 ~ 50°C
* Working humidity: 0~ 90% RH (No condensation)

  • Model Number: MH-Z19B
  • Data Sheet: Date Sheet File
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  • Intelligent NDIR Infrared CO2 Sensor Module
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Product Specification

MH-Z19B NDIR Infrared CO2 Sensor Module Principle Introduction
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 design.

MH-Z19B NDIR Infrared CO2 Sensor Module Applications
MH-Z19B NDIR infrared gas module is widely used in
* HVAC refrigeration
* Indoor air quality monitoring.
* Smart home appliances
* School
* Air cleaner

MH-Z19B NDIR Infrared CO2 Sensor Module Technical parameters
* Main Functions and Features
* High sensitivity, high resolution
* Low power consumption
* Output modes: UART and PWM wave
* Temperament compensation, excellent linear output
* Good stability
* Long lifespan
* Anti-water vapor interference
* No poisoning

MH-Z19B NDIR Infrared CO2 Sensor Module Technical Parameters
Table 1 Main Technical 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 < 120s
Working temperature 0 ~ 50°C
Working humidity 0~ 90% RH (No condensation)
Dimension 33mm x 20mm x 9mm (L x W x H)
Weight 5g
Lifespan > 5 years

Table 2 Measuring Range and Accuracy
Target Gas
Formula
Measuring Range
Accuracy
Remark
Carbon Dioxide
(CO2)
CO2
0~2000 ppm
± (50ppm+3% reading value)
Temperature compensation
0~5000 ppm
Temperature compensation

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