Standard Platinum Resistance Thermometer
Standard Platinum Resistance Thermometer I. Description The standard platinum resistance thermometer is used for compensation in the standard temperature range from 13.8033 K to 961.8 °C.
II. Description
The standard platinum resistance thermometer is used for compensation in the standard temperature range from 13.8033 K to 961.8 °C, and is used as a standard to test a variety of standard thermometers and high-precision thermometers. Within the upper temperature zone, it is also directly used to measure temperature with high precision.
The standard platinum resistance thermometer measures temperature based on the varying regularity of platinum's resistance temperature.
In accordance with ITS-90 regulations, T90 is defined by the platinum thermometer when the triple point (13.8033 K) of nitrogen's balance reaches the freezing point temperature range of silver. It is indexed using the group of defined freezing points and the reference function, as well as the temperature interpolation deviation function.
The aforementioned temperature zoning is divided into multiple zones and established to operate normally within the sub-temperature zone by different forms of thermometer structures.
