Zhengzhou Winsen Electronics Technology Co., Ltd
Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email:
Leading gas sensing solutions supplier in China!
Terminal connection type:
Note
: The analog output Vo has a default output range of 0.4V~ 2V. It is configurable from 0V to 3V.
5. Detection range and accuracy
Detection Gas
Formula
Detection Range
Accuracy
Carbon Dioxide
CO2
0~2000ppm
± (50ppm+5% reading value)
0~5000ppm
0~10000ppm
6. Main parameters
Model No.
MH-Z19B
Detection Gas
CO2
Working voltage
4.5 ~ 5.5 V DC
Average current
< 20mA (
@5V power supply)
Peak current
150mA (@5V power supply)
Interface level
3.3 V (Compatible with 5V)
Detection Range
0~2000/5000/10000ppm(optional)
Output signal
Serial Port (UART) (TTL
level 3.3V)
PWM
Analog output(DAC) (default 0.4~2V)
(0~3V range could be customized)
Preheat time
3 min
Response Time
T
90
< 120 s
Working temperature
-10 ~ 50
℃
Working humidity
0 ~ 90% RH (No condensation)
Weight
5 g
Lifespan
> 5 years
Pin
Terminal pin Definition
Pin 1
Anolog Output Vo (0.4~2V)
Pin 2
None
Pin 3
Negtive Pole(GND)
Pin 4
Positive Pole(Vin)
Pin 5
UART(RXD)TTL Level data input
Pin 6
UART(TXD)TTL Level data
output
Pin 7
None
