Intelligent Infrared Carbon Dioxide Module
(Model: MH-Z14)
User’s Manual V2.4
Valid from May 1
st
,2014
Zhengzhou Winsen Electronics Technology CO., LTD.
Страница 1: ...Intelligent Infrared Carbon Dioxide Module Model MH Z14 User s Manual V2 4 Valid from May 1st 2014 Zhengzhou Winsen Electronics Technology CO LTD...
Страница 2: ...y in accordance with the instructions If users disobey the terms or remove disassemble change the components inside of the sensor we shall not be responsible for the loss The specific such as color ap...
Страница 3: ...d absorbing gas detection technology Precision optical circuit design and superior circuit design Its design production and inspection adhere to below GB T13384 92 2 Applications MH Z14 NDIR Infrared...
Страница 4: ...at time 3min Response 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 Target Gas Measuring Range Accuracy Mark Carbon Dioxide...
Страница 5: ...1 Pad15 Pad17 Vin input voltage 4 5V 5 5V Pad2 Pad3 Pad12 Pad16 GND Pad4 Vout2 0 4 2V Pad5 Vout1 0 2 5V Pad6 PWM Pad8 HD Pad7 Pad9 NC Pad11 Pad14 Pad18 UART RXD 0 3 3V input digital Pad10 Pad13 Pad19...
Страница 6: ...stands for 0 to full range Vin 5V GND Power Ground Vout2 ADC input After preheating the value of output voltage from Vout2 represents gas concentration 8 2 PWM output taking PWM output from 2000ppm a...
Страница 7: ...C is calculated CO2 concentration unit is ppm H T is time for high level during an output cycle L T is time for low level during an output cycle 8 3 Digital connects Vin 5V power GND Power Ground RXD...
Страница 8: ...te0 Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8 Startin g byte Sensor No comman d Check value 0XFF 0x01 0x86 0x00 0x00 0x00 0x00 0x00 0x79 Return value Return Byte0 Byte1 Byte2 Byte3 Byte4 Byte5 B...
Страница 9: ...om the first step and then invert it 0xff 0x87 0x78 The second value plus one 0x78 0x01 0x79 Program C language 9 Notes for maintenance 9 1 The sensor should be calibrated regularly The cycle time is...
