Magnet-physik FH 55 Operating Instructions Manual page 27

Gauss- / Teslameter FH 55
the condition that exists during factory calibration. The greater the deviation from orthogonality
(from right angles in either of three axes), the larger the error of the reading. For example, a 5°
variance on any one axis causes a 0.4% error, a 10° misalignment induces a 1.5% error, etc..
Tolerance of unit, probe, and magnet must be considered for making critical measurements. The
accuracy of the gaussmeter reading is better than ±0.05% of reading and ±0.005% of range. An
absolute accuracy reading for gaussmeters and Hall probes is a difficult specification to give,
because all the variables of the measurement are difficult to reproduce. For example, a 1° error
in alignment to the magnetic field causes a 0.015 % reading error. In addition, reference
Nuclear Magnetic Resonance (NMR) standards are typically accurate to 5 ppm, or ±0.005%.
Finally, the best probes have an accuracy of ±0.1%.
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BA - Nr.: 2000550EBA01 S , 24 , 2019 Page 27
EPTEMBER