Gas Module MH-Z14 User Manual

MH-Z14

Intelligent Infrared Gas Module

User’s Manual

Working voltage

4.5 V ~ 5.5V DC

Average current

< 85 mA

Interface level

3.3 V

Measuring range

0~5%VOL optional

Output signal

PWM

UART

0.4-2V DC

Preheat time

3min

Reponse Time

T90 < 90s

Working temperature

0℃ ~ 50℃

Working humidity

0~95%RH

Weight

15 g

Lifespan

>5 year

Dimension

57.5×34.7×16mm（L×W×H）

1. Profile

Main functions and features：

 High sensitivity, High resolution
 Low power consumption
 Output modes: UART, analog voltage signal, PWM wave
 Quick response
 Temperature compensation, excellent linear output
 Good stability
 Long lifespan
 Anti-water vapor interference
 No poisoning

2 Main technical parameters

Target Gas

Measuring

Range

Accuracy

Mark

Carbon Dioxide

(CO2)

0~2000ppm

±(50ppm

+5%readin

g value)

Temperature

compensation

0~5000ppm

Temperature

compensation

0~1%VOL

Temperature

compensation

0~3%VOL

Temperature

compensation

0~5%VOL

Temperature

compensation

3. Structure