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Gas pressure thermometer versus temperature sensor (Kitchen physics with phyphox)
As promised I have done a phyphox program for two SensorTag sensors: Humidity and Pressure. Both provide temperature measurements. After the specification of the humidity sensor (HDC1000 of Texas Instruments) it can measure the temperature (T1) from -40°C to + 125°C, but in reality it starts to have problems below about -10°C (see the corresponding screen capture). The temperature (T2) given by the pressure sensor (BMP280 from Bosch Sensortec, full accuracy temperature range from 0°C to 65°C)  after my correction of the initial phyphox program has no anomalies by passing to negative temperatures. T1 and T2 are close, but temperature estimated from the pressure (pV = nRT, V=const) is changing faster.

Attached Files
.phyphox   Barometric and Humidity(HTPTmin).phyphox (Size: 8.2 KB / Downloads: 499)

Messages In This Thread
RE: Gas pressure thermometer versus temperature sensor (Kitchen physics with phyphox) - by solid - 04-27-2020, 09:14 AM

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