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English–PTC Temperature Calibrators | 11
4.3 Calibrator Preparation
The preparations for the micro bath must be carried out with the calibrator switched off and cooled
to room temperature.
The function of the calibrator is determined by the installed insert. The required insert is installed
into the opening of the dry block or micro bath. By using inserts, it is easy to switch between dry
block, infrared, surface and micro bath functions.
For an overview of insert compatibility, see Section
8.
4.3.1 Adaptor Sleeve Insert
Adaptor sleeves with single or multiple holes are used for the calibration of straight temperature
sensors. For adaptor sleeve insert compatibility, see Section
Figure
4: Adaptor Sleeve Inserts
To achieve the specified accuracy of the calibrator, the DUT and the adaptor sleeve must be
matched to one another:
1. The borehole of the adaptor sleeve must be no greater than 0.5
mm of the DUT diameter.
2. The measurement element of the DUT must be located in the homogeneous temperature
zone of the adaptor sleeve. See Figure
4, dimension
h.
HOT SURFACE
The calibrator may become very hot when in operation.
Touching hot parts can result in serious injuries.
Never touch the dry block, micro bath, inserts or the DUT at temperatures above
35
°C (95
°F) or below 10
°C (50
°F).
Allow the calibrator to cool before you remove the DUT, change the insert or
switch off the calibrator.
INFORMATION
Empty and clean the micro bath tank after usage
(Liquid
PTC models only). Otherwise inserts may become stuck in the calibrator.
1 Brass adaptor sleeves. (Dry
PTC models only)
2 Aluminum adaptor sleeves. (Liquid
PTC models only)
3 Insert exchange tool.
d Borehole diameter.
h Homogeneous zone. 40
mm (1.6″)
d
h
3
2
1
