Projekt Elektronik
MESS - UND REGELUNGSTECHNIK GMBH
page 17
6. Front Operation
Fig. 10: display with keys
The display shows the magnetic flux as number and unit. Different settings allow the variable
adjustment to varying measurement tasks.
6.1
Absolute and Relative Measurement: Key “Rel” and Key “Abs”
After power-on the unit is in absolute mode. Positive and negative values will be displayed. See also
“Polarity of Measured Value”.
The upper display row shows the true flux density measured by the probe. By pressing the key “Abs”
one can switch to absolute mode at every time.
By pressing the key “Rel” the actual absolute value is saved as reference and showed at the lower part
of the display. At the upper part the relative value referred to the saved reference value is shown
marked with “ “.
relative value = actual absolute value – reference value
Pressing “Rel” again sets the actual absolute value as new reference value (lower display line).
See also chapter 3 Serial Interface for other possibilities of relative and absolute measurement.
The relative mode has no effect on the analog output of the FM 3002. The analog output always
provides the actual absolute value.
