User Maintenance; Care And Cleaning; Replacing Fuses; Calibrating Ct Analyzer - Omicron CT SB2 User Manual

CT Analyzer User Manual
13

User maintenance

13.1

Care and cleaning

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 CT Analyzer
prior to cleaning!
13.2

Replacing fuses

1. Turn off CT Analyzer and unplug the power cord.
2. Ground the test object, and disconnect it from CT Analyzer. By disconnecting it you prevent a
possibly faulty test object from feeding power back into CT Analyzer.
3. Locate the blown fuse on the side panel of 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). CT Analyzer has
two fuses of the same type. Proceed as follows:
► Use a small screwdriver to unlock the two locking tongues one after the other as shown in
Figure 13-1.
► Pull out the fuse holder and locate the blown fuse.
► Replace the blown fuse by an identical fuse type.
► Insert the fuse holder and press it into the base until the two locking tongues engage audibly.
Figure 13-1: Unlocking the locking tongues of the fuse holder
13.3

Calibrating CT Analyzer

OMICRON offers a reference CT (calibration CT VEHZ0649) to verify the calibration of 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 CT Analyzer, it is necessary to measure both ratios (2000:1 and 2000:5).
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 CT Analyzer back to
OMICRON for calibration in order to guarantee proper operation in accordance with the regulations.
174 OMICRON