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Fast Cal Series Iss.07 – 08/13
INTRODUCTION
The Fast-Cal units allow flexibility for the calibration of temperature sensors.
COMPARISON CALIBRATION
By definition, one compares industrial thermometers to a calibrated standard.
There are 3 methods commonly used.
Basic
Using the controller as the “calibrated standard” this method means that the complete bath is calibrated by comparing the
controller reading to a calibrated standard placed in the bath.
This is a common method but is unsafe since the control sensor is inaccessible
For these reasons it fails to satisfy ISO9000 and gives large uncertainties.
Site or Self-contained Calibrators
In these an Indicator and external calibrated sensor are used to measure the temperature of the block. This
arrangement gives good accurate and reliable results. To recalibrate however it does mean sending the whole
calibrator back to the calibration laboratory. This, the calibrator is self-contained, self sufficient and meets ISO9000
requirements.
External Sta Basic
Here a separate indicator and calibrated sensor are used to measure the block temperature. This can give the most
accurate and reliable results, depending on the indicator.
It means that the calibrator does not need calibrating only the indicator and it’s calibrated sensor need re-calibration,
but this option is more bulky, expensive and less portable than 2) above. It also meets ISO9000 requirements.
