Probe Handling Precautions; Precautions While Clipping / Unclipping The Coil - Keysight N7040A User Manual

1 Overview

Probe Handling Precautions

The extremely thin and flexible qualities of the Rogowski coil makes it delicate and fragile and
necessitates that it should be handled with care to prolong its life. The following sections provide
instructions for proper handling of the coil and list some precautions that should be taken to avoid
damage to the coil.

Precautions while Clipping / Unclipping the Coil

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CAUTION
16
Hold the probe's ferrule as shown in the picture below while clipping / unclipping the coil.
Unclip the coil from its free end as shown in the picture below.
For the N7040A / N7041A probes, ensure that the coil is correctly and fully inserted inside the
probe's ferrule as illustrated in the figure below.
Correct Coil Insertion
Coil is inserted into the ferrule upto
the black marker line on the free
end of the coil
For the N7042A probe, the coil has a friction fit. It is considered fully inserted into the ferrule when
you can no further ease the coil's free end into the ferrule.
If the coil is inserted correctly inside the ferrule, the coil will remain in place until released.
If the coil is inserted incorrectly, the coil is likely to spring open while in use. Also, the
accuracy of measurements will be greatly impacted.
Incorrect Coil Insertion
Marker line on the coil is
visible outside the ferrule
N7040A/1A/2A Rogowski AC Current Probes User Guide