[KM53M86]  4-20mA current type aluminum outdoor RS485 wind speed sensor

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Technical Parameters

Technical parameterParameter value
BrandKLHA
Wind speed range0~30m/s
Start wind0.2m/s
Wind speed accuracy±3%
Shell materialaluminum
InterfaceRS485/4-20mA/DC0-5V
PowerDC12~24V 1A
Running temperature-25~80°C

Product Selection

    Product DesignRS485,4-20mA,DC0-5VMultiple output methods, the products are divided into the following models depending on the output method.
Product model output method
KM53M8BRS485总线
KM53M8M4-20mA
KM53M8V5DC0-5V

Product Size

KM53M86

Why choose this product?

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Application solution

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How to use?

KM53M86

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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 module or NON-Recorder default baud rate is 9600,8,n,1 ,but data recorder default baud rate is 115200 .
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
010300 0000 0184 0A
    For the correct query frame, the device will respond with data: 01 03 02 00 79 79 A6 , response format:
Address Function Code LengthData 1Check Code
0103 0200 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
4000100 00wind speedRead Only0~65535
4010100 64Model CodeRead/Write0~65535
4010200 65 total number of measuring points read/write 1~20
4010300 66device addressread/write1~249
4010400 67baud rateread/write0~6
4010500 68communication moderead/write1~4
4010600 69protocol typeread/write1~10

  For example, the range is 0~30m/s, the analog output is 4~20mA current signal, wind speed and current The calculation relationship is as shown in the formula: C = (A2-A1) * (X-B1) / (B2-B1) + A1, where A2 is wind speed range upper limit, A1 is the lower limit of the range, B2 is current output range upper limit, B1 is the lower limit, X is the currently read wind speed value, and C is the calculated current value. The list of commonly used values is as follows:
current(mA)wind speedValue (m/s) Calculation Process
40.0(30-0)*(4-4)÷(20-4)+0
51.9(30-0)*(5-4)÷(20-4)+0
63.8(30-0)*(6-4)÷(20-4)+0
75.6(30-0)*(7-4)÷(20-4)+0
87.5(30-0)*(8-4)÷(20-4)+0
99.4(30-0)*(9-4)÷(20-4)+0
1011.3(30-0)*(10-4)÷(20-4)+0
1113.1(30-0)*(11-4)÷(20-4)+0
1215.0(30-0)*(12-4)÷(20-4)+0
1316.9(30-0)*(13-4)÷(20-4)+0
1418.8(30-0)*(14-4)÷(20-4)+0
1520.6(30-0)*(15-4)÷(20-4)+0
1622.5(30-0)*(16-4)÷(20-4)+0
1724.4(30-0)*(17-4)÷(20-4)+0
1826.3(30-0)*(18-4)÷(20-4)+0
1928.1(30-0)*(19-4)÷(20-4)+0
2030.0(30-0)*(20-4)÷(20-4)+0
    As shown in the above formula, when measuring 8mA, current current is 11.5m/s。
  For example, the range is 0~30m/s, the analog output is 0~5V DC0-5Vvoltage signal, wind speed and DC0-5Vvoltage The calculation relationship is as shown in the formula: C = (A2-A1) * (X-B1) / (B2-B1) + A1, where A2 is wind speed range upper limit, A1 is the lower limit of the range, B2 is DC0-5Vvoltage output range upper limit, B1 is the lower limit, X is the currently read wind speed value, and C is the calculated DC0-5Vvoltage value. The list of commonly used values is as follows:
DC0-5Vvoltage(V)wind speedValue (m/s) Calculation Process
00.0(30-0)*(0-0)÷(5-0)+0
16.0(30-0)*(1-0)÷(5-0)+0
212.0(30-0)*(2-0)÷(5-0)+0
318.0(30-0)*(3-0)÷(5-0)+0
424.0(30-0)*(4-0)÷(5-0)+0
530.0(30-0)*(5-0)÷(5-0)+0
    As shown in the above formula, when measuring 2.5V, current DC0-5Vvoltage is 15m/s。
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TYPE: KM53M86

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