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INSTALLATION AND POSITIONING ON THE MACHINE
3.
TECHNICAL DATA
Extrusion processes require very high temperatures. Extrusion pressure can be checked by means of espe-
cially designed transducers.
The IMPACT series sensors are suitable for pressure measurements with high temperature and are based
on the piezoresistive technology.
Following advice for extending the sensors lifetime.
a) Avoid shocks and abrasions to the in contact diaphragm. Protect the transducer with its cover each time
you remove it from its seat.
b) The seat must be prepared perfectly and with appropriate tools in order to respect the depth and axiality
of the holes and tapping.
Pay particular attention to the coaxiality of the holes to the thread, because diaxialities greater than 0.2 mm
will break the transducer during assembly.
It is essential that hole depth guarantee the absence of chambers or air pockets in which extrusion material
may be trapped.
To prevent contact with the extrusion screw or with tools used to clean the extrusion chamber, the front
diaphragm must not extend from the inner wall of the extruder.
c) Before assembling the transducer in machines already in operation, make sure that the housing is clean.
Remove any residual with the suitable cleaning device.
d) The transducer should be removed only with the machine empty (without pressure) but still hot.
e) The transducer should be cleaned with solvents for the material being processed.
Any mechanical action on the contact diaphragm modifies its operation and could break it.
The installation seat has to be realized:
Incorrect working or shape of the side can result in properties out of specification, bad behaviour
or damage to the sensor.
The side should be clean and without any polymer residual.
4
3a - Installation seat
D1
1/2-20UNF
D2
.313 ±.001"
.398 ±.001"
[7.95 ±0.02mm]
[10.10 ±0.02mm]
D3
.454 ±.004"
.634 ±.004"
[11.53 ±0.1mm]
[16.10 ±0.1mm]
D4
.515"
.790"
[13mm]
minimum
A
.225"
.240"
[5.72mm]
minimum
B
.17"
.16"
[4.3mm]
maximum
C
.75"
.99"
[19mm]
80175G_MAN_I3-IE-IN-IX_I7_11-2018_ENG
M18x1.5
[20mm]
minimum
[6.10mm]
minimum
[4.0mm]
maximum
[25mm]
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