MAGSYS IGM11 Operating Instructions Manual page 31

Industrial Gaussmeter IGM11 Operating Instructions
Chapter 5 Operation
The error of the fast peak value measurement consists of the error of the DC field
measurement and of a frequency factor that depends on the measuring range.
The range-depending frequency response factor is multiplied by the basic accuracy,
depending on the respective signal frequencies and then added to the basic accuracy.
Example:
Measurement in the range of 1000 mT with a frequency of 1 kHz.
The basic accuracy lies at 0.5 %. The frequency response factor is 0.98 ≙ −2 %.
During this measurement, you have to calculate a total error of −2 % ± 0,5 %.
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Error DC Field Measurement
B ≤ 1.5 T
B ≥ 1.5 T
Range-Depending Frequency Response Factor (Sinusoidal Field Pattern)
Frequency
4500 mT
50 Hz 1.00
1.00
70 Hz
1.00
100 Hz
1.00
200 Hz
500 Hz 0.99
700 Hz 0.99
1000 Hz 0.98
2000 Hz 0.92
(1σ)
≤ ±0.5 %
≤ ±1.0 %
Measuring Range
1000 mT 100 mT
1.00
1.00
1.00
0.99
1.00
0.98
1.00
—
0.99 —
0.98 —
0.98 —
— —
10 mT
0.99
0.98
0.93
—
—
—
—
—