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Circuit diagram of Humidity temperature test system with Humidity temperature sensor 89C51 SHT15

SHT15 posed by the relative humidity of castor Testing System circuit diagram as shown. The system can measure and display the relative humidity , temperature and dew point . SHT15 as a slave , 89C51 microcontroller as the host , the two communicate through the serial bus . R for the pull-up resistor ( can not ), C for the power supply decoupling capacitor . P0 port , P2 and P3 port port 3 groups were then LED display . Among them, the relative humidity measurement range is from 0% to 99.99% , accuracy was ± 2% RH, resolution is 0.01% RH. Temperature measurement range is -40 ~ 123.8oC, measuring accuracy ± 1 ?, resolution is 0.01 ?. Dew point measurement accuracy ± 1 ?, resolution is ± 0.01 ?.

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Circuit diagram of Humidity temperature test system with Humidity temperature sensor 89C51 SHT15