Device and method for testing inside relative humidity of cement base material
A technology of cement-based materials and testing devices, applied in the direction of material capacitance, etc., can solve the problems of restricting the depth of research, large gaps, and difficult sealing, etc., and achieve the effect of simple test methods, small device volume, and small test space
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[0016] The humidity measuring element used in the embodiment of the present invention is a SHT75 digital temperature and humidity sensor, and the sensor includes a capacitive polymer humidity measuring element and an energy gap type temperature measuring element. The main features of this sensor are: humidity measurement accuracy is ±1.8%RH at 25℃, temperature measurement accuracy is ±0.3℃; humidity measurement range is 0~100%RH, temperature measurement range is -40~+123.8℃; response time is <8s; small size, etc.
[0017] The implementation of the present invention will be introduced in combination with the description of the drawings, the drawings and the embodiments:
[0018] The manufacturing method of the device of the present invention: first connect the SHT75 temperature and humidity sensor 1 to the four-core wire 5, and sleeve it into a stainless steel sleeve 3, the outer diameter of the sleeve is 9.5mm, the inner diameter is 8.9mm, the wall thickness is 0.6mm, and the slee...
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