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User Maintenance
11 User Maintenance
11.1 Care and Cleaning
The CT Analyzer does not require any special maintenance or care. Clean the
device from time to time or as necessary using a cloth dampened with water or
isopropanol alcohol. Always disconnect the CT Analyzer prior to cleaning!
11.2 Replacing Fuses
1. Turn off the CT Analyzer and unplug the power cord.
2. Ground the test object, and disconnect it from the CT Analyzer. By
disconnecting it you prevent a possibly faulty test object from feeding power
back into the CT Analyzer.
3. Locate the blown fuse on the side panel of the CT Analyzer and replace it by
an identical fuse type: T6.3H 250 V (6.3 Amps slow-acting high breaking
capacity wire fuse 5 x 20mm). The CT Analyzer has two fuses of the same
type.
11.3 Calibrating the CT Analyzer
OMICRON offers a reference CT (calibration CT VEHZ0649) to verify the
calibration of the CT Analyzer. This reference CT is delivered together with a
calibration certificate of a national test laboratory.
The calibration CT has a ratio of 2000:1 and 2000:5. Its class is 0.02.
To verify the calibration of the CT Analyzer, it is necessary to measure both
ratios (2000:1 and 2000:5). The CT Analyzer is within the specifications, if all
measurement results are within class 0.02.
If the measurement results are not within class 0.02, we recommend to send the
CT Analyzer back to OMICRON for calibration in order to guarantee proper
operation in accordance with the regulations.
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