TOPIC:

Pressure & Temperature
Calibration Uncertainty and Techniques

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A calibration is a matter of qualifying the sensor-under-test. Only by knowing the limitations of the sensor is it possible to trust the measurements and optimize the process control. In other words, a calibration reading is only valid if the uncertainty value can be accounted for.

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GENERAL CALIBRATION:

Importance of "Uncertainty" - Why it is important to pay attention to the uncertainty

Influence on Uncertainty - Elements of the "Uncertainty Circle"

Calibration Certificates - Accredited or Traceable

TEMPERATURE CALIBRATION:

True Temperature Calibration

Correct Use of Inserts

Choosing the Correct Insert

DRY-BLOCK CALIBRATORS:

Dry-Block Principle - The basic design of a temperature calibrator

Dual-Zone - (Active) JOFRA ATC Series - Best temperature homogeneity in block

Dual-Zone - (Central) JOFRA ITC Series - Very good temperature homogeneity in block

Efficient cooling techniques

DEADWEIGHT TESTERS:

Floating Ball - Principle of the Pneumatic Deadweight Testers

Re-Entrent Piston/Cylinder - Principle of the Piston/Cylinder Hydraulic Deadweight Testers

Overhung Weight Carriers - Hydraulic Deadweight Testers

Dual Volume Handpump - Principle of the Hydraulic Hand Pump