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magne t
MAGSYS
systeme
The error of the AC field measurement is composed of the error of the DC field
measurement and the error of frequency and shape factors.
The frequency response factor and shape factor are multiplied with the basic
accuracy in dependence of the respective measuring parameters, and then added to
the basic accuracy.
Example:
Measuring B
The basic accuracy is 0.5 %. The frequency response factor is 0.9. The shape factor is
1.02.
The error from these factors is 0.95 · 1.02 = 0.97 ≙ −3 %
For the measurement you have to calculate a total error of −3 % ± 0.5 %.
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Error DC Field Measurement
B ≤ 1.5 T
B ≥ 1.5 T
Frequency Response Factor (Sinusoidal Field Pattern)
Frequency
2 kHz
5 kHz
7 kHz
10 kHz
Shape Factor (Sinusoidal Field Pattern)
Field Strength B
eff
700 mT
1000 mT
1500 mT
2000 mT
= 1000 mT at a frequency of 5 kHz.
eff
Gaussmeter IGM11 Operating Instructions
(1σ)
≤ ±0.5 %
≤ ±1.0 %
Factor
1.00
0.98
0.95
0.90
Factor
1.00
1.01
1.02
1.03
Chapter 5 Operation
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