Thermodynamic measurand temperature
Module 1 - Calibration of resistance thermometers with and without direct indicating measuring device in comparative measurement according to guideline DKD-R 5-1
Calibration objects - objects to be measured:
- Resistance sensors (IPRT, SPRT)
- PRT with precision measuring device (resolution 0.01 K | 0.001 K)
- PRT with process measuring device (resolution 0.1 K | 0.01 K)
Agenda
- Physical basics
- Presentation of relevant standards
- Functionality of resistance sensors (PTC | NTC)
- Typification of sensors (thin layer | wire wound | ceramic | glass)
- Qualification of temperature devices
- Determination of temperature profiles (inhomogeneity)
- Determination of instabilities
- Measurement setup and circuit technologies (two-wire | three-wire | four-wire)
- Metrological traceability (primary standards | secondary standards)
- Metrological influences
- Standard measuring equipment (calibration uncertainty, drift estimation)
- Short-term stability
- Hysteresis
- Self-heating error
- Insulation resistance
- Heat dissipation error
- Preparation of a measurement uncertainty balance
- Requirements for precision measuring instruments with a resolution of 0.001 K
- Characteristic curve approximations
Module 2 - Calibration of resistance thermometers at fixed points of the ITS-90 based on the - Supplementary Information for the ITS-90
Calibration objects - objects to be measured:
- SPRT | SPRT with precision measuring device (resolution 1 mK | 0.1 mK | 0.01 mK)
Agenda
- Physical basics
- Functioning and typification of resistance sensors
- Qualification of temperature devices
- Determination of temperature profiles (inhomogeneity)
- Determination of instabilities
- Preparation of temperature fixed point cells
- Adjustment of the temperature plateau
- Qualification of temperature fixed point cells
- Metrological traceability
- Electrical data acquisition:
- Comparators | Measuring bridges
- Bridge circuit with external standard resistor
- Calibration procedure
- Thermal treatment of SPRT
- Determination of the ITS90 criterion
- Monitoring of the temperature plateau with SPRT
- Thermal adaptation
- Determination of the w-value
- Short-term stability at the water triple point
- Metrological influences
- Normal measuring equipment (calibration uncertainty, drift estimation)
- Projection of measuring current 0 mA (self-heating error)
- Hydrostatic pressure correction
- Discussion of oxidation effects
- Heat dissipation error
- Kennlinien-Approximation nach ITS-90
- Erstellung einer Messunsicherheits-Bilanz
- Characteristic curve approximation according to ITS-90
- Requirements for measuring chains: SPRT with precision measuring instruments
Module 3 - Calibration of thermocouples according to guideline DKD-R 5-3
Calibration objects - objects to be measured:
- Thermocouples (noble: S, R; B | base metal: K, N, T, E, J, U, L ,....)
- Thermocouple with precision measuring device (resolution 0.01 K | 0.001 K)
- Thermocouple with process measuring device (resolution 0.1 K | 0.1 K)
- Data logger with thermocouple
Agenda
- Physical basics
- Presentation of relevant standards (DIN 60584, AMS 2750, CQi9)
- Functionality of thermocouples (Seebeck effect)
- Typification of sensors (Noble | basic metal)
- Qualification of temperature devices
- Determination of temperature profiles (inhomogeneity)
- Determination of instabilities
- Measurement setup and cold junction compensation (Internal | External)
- Use of compensation lines
- Metrological traceability (Primary Standards | Secondary Standards)
- Metrological influences
- Standard measuring equipment (calibration uncertainty, drift estimation)
- Inhomogeneity of thermocouples (estimation | investigation)
- Short-term stability
- Insulation resistance
- Heat dissipation error
- Preparation of a measurement uncertainty balance
- Characteristic curve approximations
Module 4 - Calibration of block calibrators according to guideline DKD-R 5-4
Calibration objects - objects to be measured:
- Block calibrators without | with external sensors
- Block calibrators with liquid insert
Agenda
- Design and function of block calibrators
- Definition of homogeneous zones
- Investigation
- Qualification of the useful volume with application: use of liquids
- Traceability via external standard resistance thermometer
- Metrological influences
- Preparation of a measurement uncertainty balance
Module 5 - Calibration of simulators and indicators according to guideline DKD-R 5-5
Calibration objects - objects to be measured:
- Sensor-based simulators and indicators: resistance thermometers
- Sensor-based simulators and indicators: thermocouples
Agenda
- Sensor basis: Resistance Thermometers
- Functionality of resistance sensors (PTC | NTC)
- Presentation of relevant standards (DIN EN 60751 | ITS-90)
- Setup: Measuring | Giving
- Measurement setup and circuit technologies (two-wire | three-wire | four-wire)
- Sensor basis: Thermocouples
- Functionality of thermocouples
- Presentation of relevant standards (DIN EN 60584 | AMS 2750 |CQi9)
- Setup: Measuring | Giving
- with internal and external reference junction
- with compensating lines
- Standard measuring equipment
- Preparation of a measurement uncertainty balance
- Metrological influences
- Metrological traceability (primary standards | secondary standards)
- Standard measuring equipment (calibration uncertainty, drift estimation)
- Measurement
- Reference junction compensation
- Oxidations and contact resistances
- Presentation of results reports (calibration certificates)
- Workshop mit praktischen Anwendungsbeispielen
- Aim of our training
- Implementation of your tasks
- Exemplary creation of measurement uncertainty balances in your everyday life
- Acquisition of basic knowledge or deepening of your knowledge