Operation; Initial Setup - Magnet-physik FH 55 Operating Instructions Manual

Gauss- / Teslameter

4 Operation

4.1 Initial Setup

To take the FH 55 into operation proceed as follows.
1. Power line connection: connect the power cord to the power connector on the rear side of the
instrument and to a power outlet.
2. Probe installation: Plug the probe into the connector at the front panel of the field strength
meter. Use the side screws to secure the connector.
3. Make sure that all required connections are made before you switch on the instrument
(interface, analog output, power supply)
4. Switch on the FH 55. The display lights up.
5. After initialization the display will return to the state it was in before being switched off. For
best results, the instrument and probe should warm up for at least 5 minutes before zeroing
the probe, and at least 30 minutes for rated accuracy. The probe and the shielding chamber
should be at the same temperature.
6. Place the probe in the magnetic shielding chamber and press the Zero key on the front panel.
7. Press the Enter key. The message Adjusting Zero is shown until the normal display appears
again. Do not move the probe while the Adjusting Zero message is being displayed.
8. If the unit has performed well to this point, the unit is functioning properly. If you have a
reference magnet available, you can continue with the test using the magnet to verify the
accuracy of the FH 55.
9. If continuing the procedure with a reference magnet, ensure the probe can accommodate the
range of the magnet. Use the Range key to select the proper range (or press Auto for
automatic ranging). Set the display for DC. Finally, since orientation of the probe is very
selective, press the Max./Min. key once. This will capture additionally the highest reading.
Caution!
Care must be exercised when handling the probe. The tip of the probe is very
fragile. Any excess force may break the probe.
BA - Nr.: 2000550EBA01
Fig. 2 : Magnetic shielding chamber NK 1
S , 24
EPTEMBER
TH
, 2019
FH 55
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