12
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1ELA
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A2621−1.0en/de
6
Measurement
6.1
Plunger in center position
In the mechanical center position, the output voltage of the amplifier is to be 0
V. This condition is achieved by the following procedure.
a) Fasten the sensor.
b) Connect the sensor (without plunger) to the amplifier.
c) Zero−balance the amplifier (see the amplifier’s Operating Manual).
d) Fasten the plunger and insert it axially into the sensor body until the ampli
fier displays 0 mV/V for the unbalance.
e) If a new measuring range is selected at the amplifier, another zero balance
is made in the case of a deviation from the zero point.
From the zero position thus established, you can measure on both sides
within the nominal (rated ) measuring span. At the amplifier output the nom
inal (rated) measuring span corresponds to the whole range of the nominal
(rated) output voltage from negative to positive.
6.2
Plunger in off−center position
If you choose an initial position differing from the center position, the amplifier
must be adjusted to display 0 mV/V for the unbalance in the selected zero po
sition.
a) Determine the center position for which the unbalance at the amplifier input
is 0 mV/V.
b) From this position, move the plunger by the desired amount.
c) Adjust the amplifier output signal to zero.
