Temperature sensor e.g. resistance temperature detectors for use in e.g. industrial application, has reference cell that is heated by supplying electric power to melting point as reference temperature for calibration

摘要

#CMT# #/CMT# The temperature sensor has sensor housing (1) that encloses a sensor element (3), which cooperates with calibration unit. The sensor element is designed as a heating unit to heat a reference cell (6). The measurement mode can be converted into a calibration mode by a control unit (5), in which the reference cell is heated by supplying electric power to melting point (TM) as a reference temperature for calibration. #CMT# : #/CMT# An independent claim is included for method for in-situ calibration of temperature sensor. #CMT#USE : #/CMT# Temperature sensor such as resistance temperature detectors (RTDs) or thermocouples for use in industrial and laboratory applications. #CMT#ADVANTAGE : #/CMT# The measurement accuracy of temperature sensor is increased without providing additional heating element. The sensor can be accommodated in less space. The response time of the temperature sensor can be reduced. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawings show the schematic side view of temperature sensor and graph illustrating the temperature-time profile during calibration of the temperature sensor. (Drawing includes non-English language text) 1 : Sensor housing 3 : Sensor element 5 : Control unit 6 : Reference cell TM : Melting point.