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5.0 After use 
 
5.1  Storing and transporting the calibrator 
 
Caution… 
The following guidelines should always be observed when 
storing and transporting the calibrator. This will ensure that 
the instrument and the sensor remain in good working order 
(all models). 
 
Switch off the calibrator using the power control switch. 
Note that the calibration procedure may be interrupted at any time 
using the power control switch. Turning off the calibrator during the 
calibration process will not damage either the instrument or the sensor. 
 
Dry-block calibrators only 
The following routine must be observed before the insertion tube is 
removed and the instrument switched off: 
 
 
 
Over 100°C/212°F 
If the calibrator has been heated up to temperatures above 
100°C/212°F, you must wait until the instrument reaches a 
temperature below 100°C/212°F before you switch it off. 
 
Below 0°C/32°F (applies only to the ATC-125/140/156/ 
157 A/B models) 
 If the calibrator has reached a temperature below 
0°C/32°F, ice crystals may form on the insertion tube 
and on the well. This, in turn, may cause verdigris to 
form on the material. 
To prevent this from happening, the insertion tube and 
the well must be dried. This is done by heating up the 
calibrator to min. 100°C/212°F and any water left will 
evaporate. 
Remove the insulation plug while heating up.