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Product

 [SM3710M]  4-20mA current type duct type temperature and humidity sensor


SM3710M SM3710M
Technical parameterParameter value
BrandSONBEST
Temperature measuring range0~50℃/-20~80℃/-40~60℃
Temperature measuring accuracy±0.3℃ @25℃
Range change mode DIP switch
Humidity measuring range0~100%RH
Humidity accuracy±3%RH @25℃
Communication InterfaceDC4~20mA
PowerDC12~24V 1A
Running temperature-30~85℃
Working humidity5%RH~90%RH

Product Size

SM3710M

Wiring instructions

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How to use?

SM3710M

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SM3710M SM3710M SM3710M

1. temperature and current computing relationship

  The product comes standard with 0~50℃/-20~80℃/-40~60℃ multi-range. The default range is 0~50℃. Users can modify the range by dialing the switch. For example, the range is 0~50℃, the analog output is 4~20mA current signal, temperature and current The calculation relationship is as shown in the formula: C = (A2-A1) * (X-B1) / (B2-B1) + A1, where A2 is temperature 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 temperature value, and C is the calculated current value. The list of commonly used values is as follows:
current(mA)temperatureValue (℃) Calculation Process
40.0(50-0)*(4-4)÷(20-4)+0
53.1(50-0)*(5-4)÷(20-4)+0
66.3(50-0)*(6-4)÷(20-4)+0
79.4(50-0)*(7-4)÷(20-4)+0
812.5(50-0)*(8-4)÷(20-4)+0
915.6(50-0)*(9-4)÷(20-4)+0
1018.8(50-0)*(10-4)÷(20-4)+0
1121.9(50-0)*(11-4)÷(20-4)+0
1225.0(50-0)*(12-4)÷(20-4)+0
1328.1(50-0)*(13-4)÷(20-4)+0
1431.3(50-0)*(14-4)÷(20-4)+0
1534.4(50-0)*(15-4)÷(20-4)+0
1637.5(50-0)*(16-4)÷(20-4)+0
1740.6(50-0)*(17-4)÷(20-4)+0
1843.8(50-0)*(18-4)÷(20-4)+0
1946.9(50-0)*(19-4)÷(20-4)+0
2050.0(50-0)*(20-4)÷(20-4)+0
    As shown in the above formula, when measuring 8mA, current current is 16.5℃。

2. humidity and current computing relationship

  For example, the range is 0~100%RH, the analog output is 4~20mA current signal, humidity and current The calculation relationship is as shown in the formula: C = (A2-A1) * (X-B1) / (B2-B1) + A1, where A2 is humidity 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 humidity value, and C is the calculated current value. The list of commonly used values is as follows:
current(mA)humidityValue (%RH) Calculation Process
40.0(100-0)*(4-4)÷(20-4)+0
56.3(100-0)*(5-4)÷(20-4)+0
612.5(100-0)*(6-4)÷(20-4)+0
718.8(100-0)*(7-4)÷(20-4)+0
825.0(100-0)*(8-4)÷(20-4)+0
931.3(100-0)*(9-4)÷(20-4)+0
1037.5(100-0)*(10-4)÷(20-4)+0
1143.8(100-0)*(11-4)÷(20-4)+0
1250.0(100-0)*(12-4)÷(20-4)+0
1356.3(100-0)*(13-4)÷(20-4)+0
1462.5(100-0)*(14-4)÷(20-4)+0
1568.8(100-0)*(15-4)÷(20-4)+0
1675.0(100-0)*(16-4)÷(20-4)+0
1781.3(100-0)*(17-4)÷(20-4)+0
1887.5(100-0)*(18-4)÷(20-4)+0
1993.8(100-0)*(19-4)÷(20-4)+0
20100.0(100-0)*(20-4)÷(20-4)+0
    As shown in the above formula, when measuring 8mA, current current is 29%RH。
software for test product
After downloading, please read the readme.txt documentation

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Data and Software
software for test product
Data and Software
software for test product
After downloading, please read the readme.txt documentation

0

Data and Software

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TYPE: SM3710M

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