[KD97B70]  RS485 explosion proof carbon dioxide sensor

  KD97B70 using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC,DCS and other instruments or systems for monitoring carbon dioxide state quantities.The internal use of high-precision sensing core and related devices to ensure high reliability and excellent long-term stability,can be customized RS232,RS485,CAN,4-20mA,DC0~5V/10V,ZIGBEE,Lora,WIFI,GPRS and other output methods.

Technical Parameters

Technical parameter Parameter value
Brand KLHA
CO2 range 0~5000ppm
CO2 accuracy ±100ppm
Communication Interface RS485
Default baud rate 9600 8 n 1
Power DC9~24V 1A
Display LCD
Running temperature -40~80°C
Working humidity 5%RH~90%RH

Product Size

KD97B70

How to wiring?

KD97B70

KD97B70

Why choose this product?

KD97B70

KD97B70

KD97B70

Application solution

KD97B70

How to use?

KD97B70

Communication Protocol

    The product uses RS485 MODBUS-RTU standard protocol format, all operation or reply commands are hexadecimal data. The default device address is 1 when the device leaves the factory, and the default baud rate is 9600,8,n,1 .
1. Read data (function code 0x03)
    Inquiry frame (hexadecimal), sending example: query 1 data of 1# device, the upper computer sends the command: 01 03 00 00 00 01 84 0A .
Address Function Code Start Address Data Length Check Code
01 03 00 00 00 01 84 0A
    For the correct query frame, the device will respond with data: 01 03 02 00 79 79 A6 , response format:
Address Function Code Length Data 1 Check Code
01 03 02 00 79 79 A6
    Data description: The data in the command is hexadecimal, take data 1 as an example, 00 79 is converted to decimal value as 121, assuming the data magnification is 100, then the real value is 121/100=1.21, Others and so on.
2. Common data address table
Configuration Address Register Address Register Description Data Type Value Range
40001 00 00 carbon dioxide Read Only 0~65535
40101 00 64 Model Code Read/Write 0~65535
40102 00 65 total number of measuring points read/write 1~20
40103 00 66 device address read/write 1~249
40104 00 67 baud rate read/write 0~6
40105 00 68 communication mode read/write 1~4
40106 00 69 protocol type read/write 1~10

 

Product Pictures

KD97B70

Product Pictures

KD97B70

KD97B70

KD97B70

KD97B70

KD97B70

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BRAND: KLHA

TYPE: KD97B70

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