Version 4 (January 2021) EN
4
Installation and Operation
In order to compensate properly for bending, the sensors are to be mounted at 180° on the
tie bar, meaning that they are mounted precisely opposite each other.
Preparation
•
The Sensors must be spaced at least two tie bar diameters away from the tie bar
clamps.
•
Choose a mounting location which meets this requirement and clean it of all forms
of surface contamination. Hard contaminants should be removed with a wire brush
until the shiny bare metal is visible.
•
Mount the sensors to the tie bar. Take care that the measuring element is properly
aligned, because when first mounted it is likely to be crooked. Pull lightly on the ca-
ble entry side until the alignment is correct. Now the sensor can be tightened down
and will be ready for use.
•
Now connect the sensors through the junction box to the display unit and plug that
into the power line. Turn on the display unit, enter the desired measuring setup, and
then press the button
ZERO
.
•
Run the machine through three complete opening and closing cycles. This serves to
null all the internal settings.
Measuring procedure
1.
Open the mold and set the digital display to zero using the
ZERO
button.
2.
Close the mold with the pressure which is to be measured.
3.
The display shows the strain in the tie bar as well as the average of all four sensors.
4.
Open the mold again. The display should return to zero.
5.
If the display does not read zero, set it back to zero.
6.
Repeat this operation two more times and note the average of all the sensors. This
will provide the best accuracy.
Once you have done this preliminary setup will know the closing pressure for each tie bar
and the variation in closing pressure between them. By adjusting the parallel alignment of
the mold faces you can then produce the same pressure from all the tie bars.
