WAVECONTROL SMP2, Руководство пользователя

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Appendix 3. Static field measurements: WPH-DC
Warning:
• Under high field conditions (above 30 mT), it is not recommended to connect
the SMP2 directly to the WPH-DC probe as the SMP2 contains ferromagnetic
elements. In these cases, you must use the 5-meter extension cable to keep
the SMP2 as far away as possible.
Important note: if it is suspected that the measuring point may perhaps have an
elevated field, it is recommended to carry out a preliminary assessment around that
point, approaching progressively. If it is found that the field is close to 30 mT, where
the SMP2 will be placed to take the final measurement, precautions should be taken to
prevent the SMP2 from moving, or using the extension cable as mentioned previously.
• The WPH-DC probe integrates hall sensor technology that allows very high
fields to be measured (up to 10 T) but these sensors have a residual voltage
(without the presence of a magnetic field) that must be compensated to
perform an accurate measurement. For this, you would have to use the “zero
Gauss” camera delivered with the equipment and make the zeroing of the
probe. (More detail below).
User’s Manual Electromagnetic Field Meter SMP2 P. 68