Model 717
Adjustment Instruction
Dokument: 00609_E1.DOC erstellt am 29.09.1998
Procedure to adjust the scale model 717:
1) Place the scale on a smooth ground and align it by means of a level device. Pay attention
that the scale is adapted to
the environment temperature
prior to the adjustment.
1) Connect the scale with the
supply unit to the power
supply.
2) Remove the calibration
marks at the rear side of the
scale, that the rotary
potentiometers underneath
can be adjusted by means of
a screw driver (see sketch).
3) Select a test weight which is
nearly max. weight (15 kg)
and calculate the set display
A
S
to be achieved for the test
weight P
L
, taking into
consideration the
acceleration due to gravity of
the location.
4) Start the scale, wait until 0.0
is displayed and weight it with test weight P
L
. Adjust the display coarsly with
potentiometer INCLIN.COARSE and finely with potentiometer INCLIN.FINE. Adjust the
potentiometers such, that the display of the scale corresponds to the set display A
S
.
5) Remove the test weight from the scale and restart it. Weight the scale with the test load
and check if the display value corresponds to the set display (tolerance +/- 5 g). If not,
repeat steps 5) and 6) described herein.
6) Represent the scale for re-calibration. Take care that the holes for the rotary
potentiometers are secured by protection marks against unauthorized use after re-
calibration.
This procedure is suitable for adjusting model 757 too.
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