At present, the platinum resistance temperature sensor used by the national automatic meteorological station in Hubei Province mainly uses on-site verification. The reference verification regulations are "JJG (Meteorological) 002-2015 Automatic Meteorological Station Platinum resistance temperature sensor test regulations".

The on -site verification method is measured by a comparative method. The average temperature field that is placed in the constant temperature tank in the constant temperature tank is compared with the standard device. The measurement performance of the sensor is checked by the measurement error of the sensor. A calibration certificate with a national meteorological measurement station is adopted, and the model is RC Y-1A self-school platinum resistor temperature measuring instrument as the standard device. Ethanol is used as heat transfer medium. During the measurement, the platinum resistance thermometer and standard platinum resistance thermometer will be inserted into the portable dry furnace at the same time, and the temperature sensing parts of the two sensors are kept on the same level, and the two thermometers should be inserted into a sufficient depth in the medium, so Eliminate the effects of heat transfer on the test results.

Set the dry furnace to the test temperature point required by the test regulations. When the temperature of the heat transfer medium in the dry furnace reaches stable, and the readings of the two sensors also keep the reading, the readings are started. Reading and the readings of the platinum resistor temperature sensor, read 4 times a total of 4 times. After completing the standard temperature sensor and data processing of the complaint resistor temperature sensor at all test points, the verification results can be obtained.