Winsen MH-Z19B User Manual Download Page 4 | Manualshive

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Winsen MH-Z19B User Manual Download Page 4

Zhengzhou Winsen Electronics Technology Co., Ltd

www.winsen-sensor.com

Tel: 86-371-67169097/67169670 Fax: 86-371-60932988 Email:

[email protected]

Leading gas sensing solutions supplier in China!

Terminal connection type:

Pins connection type:

Pins connection type:

Pin

Pin Definition

Vin

Positive pole of power (Vin)

GND

Negative pole of power (GND)

Vo

Analog output(0.4~2V)

PWM

PWM

Hd

HD(zero point calibration, low level

lasting for over 7s is effective)

Rx

UART(RXD)TTL Level data input

Tx

UART(TXD)TTL Level data output

Unit: mm

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Summary of Contents for MH-Z19B

Page 1: ...1 67169097 67169670 Fax 86 371 60932988 Email sales winsensor com Leading gas sensing solutions supplier in China Infrared CO2 Sensor Module Model MH Z19B User s Manual Version 1 5 Valid from 2019 09...

Page 2: ...e the faults caused by misuse please read the manual carefully and operate it correctly in accordance with the instructions If users disobey the terms or remove disassemble change the components insid...

Page 3: ...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 d...

Page 4: ...sing solutions supplier in China Terminal connection type Pins connection type Pins connection type Pin Pin Definition Vin Positive pole of power Vin GND Negative pole of power GND Vo Analog output 0...

Page 5: ...ers 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 2...

Page 6: ...04ms 5 Cycle start high level output 2ms theoretical value The middle cycle 1000ms 5 cycle end low level output 2ms theoretical value CO2 concentration Cppm 2000 TH 2ms TH TL 4ms Cppm CO2 concentratio...

Page 7: ...concentration HIGH 256 LOW For example Send command FF 01 86 00 00 00 00 00 79 Return value FF 86 02 20 00 00 00 00 58 How to calculate concentration convert hexadecimal 02 into decimal 2 hexadecimal...

Page 8: ...0 5000 or 0 10000ppm For example set 0 2000ppm detection range send command FF 01 99 00 00 00 07 D0 8F set 0 10000ppm detection range send command FF 01 99 00 00 00 27 10 2F Analog Voltage Output Vo C...

Page 9: ...refrigerator etc If the module is used in latter environment please turn off this function 9 Notes 9 1 Please avoid the pressure of its gilded plastic chamber from any direction during welding install...

Page 10: ...China 400ppm for over 20 minutes Connect the HD pin to low level 0V for over 7 seconds 9 8 Forbid using wave soldering for the sensor 9 9 When soldering with soldering iron set the temperature to be 3...

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