Limit - Magnet-physik EF 14 Operating Instructions Manual

Electronic Fluxmeter
Vs/n, Wb/n and Mx/n are strictly speaking not units. They only acquaint that the division of the
magnetic flux by the number of turns n of the measuring coil is already carried out by the
fluxmeter.
The EF 14 assigns the required prefix automatically, depending on range and coil constant.
G
M
k
m
µ
n
p
The required unit is selected with the arrow keys. At the beginning or end of a line the arrow
keys are used to move the selection mark into the preceding or following line. The selection is
confirmed with the Enter key. The instrument then returns to the measuring operation.
When the input is canceled with the Escape key the new selected unit is not accepted. The
values will continue to be given in the previously valid unit.

4.6 Limit

The Limit menu is used to configure the Limit function. In the first line the function can be
switched on or off. The selection is done with the arrow keys and confirmed with Enter.
In the second line the Limit Mode is selected: +/- or absolute. If +/- is selected, the sign of the
measured value is take into account. If absolute is selected, only the absolute value is
evaluated. The absolute mode can e.g. be used to sort magnets according to their field strength
or magnetic moment without paying attention to the polarity. In the +/- mode magnets can be
sorted according to their polarity.
The values for the switching levels are entered in the two following lines: first the upper limit
and then the lower limit. The lower limit must always be smaller then the upper limit. A
negative sign can only be entered if +/- is selected.
In the measuring operation Low is shown in the lower left corner of the display if the measured
value is below the lower limit. The display changes to OK if the value is between the two
limits. If the upper limit is exceeded, High is shown.
If both limits are set to the same value the display changes directly from Low to High.
BA – no.: 100514EBA02
9
10
6
10
3
10
-3
10
-6
10
-9
10
-12
10
Fig. 4.6.1: Limit menu
December 9
th
, 2020
EF 14
Page 25