IM100CZ08-E9
4
3.2 Caution in Removing Pressure Sensors
•
Always remove the sensor while resin is being melted
, since the diaphragm of the sensor may be damaged if the sensor is removed
after the resin has hardened. If the sensor is re
−
mounted under this condition the repeatability may deteriorate.
•
When removing the pressure sensor, remove it under the same temperature as that during installation. Removing the pressure sensor under
the different temperature as that during installation cause irregular engagement of the thread.
•
If resin flows into the gap between the lead pipe and the mounting hole, it may be impossible to remove the sensor even with the threads
completely disengaged. In this case, if the sensor is forcibly removed using a puller, the sensor may be knocked when removed, damaging
the diaphragm and reducing the accuracy. Slowly remove the sensor without knocking it.
•
Remove the resin attached to the pressure sensing part (diaphragm and its surrounding section) after melting it by applying light heat to the
side of the pressure sensing part using a burner (Do not let the temperature exceed 400
°
C). In addition, care should be taken not to scratch
the pressure sensing block. If not, diaphragm damage or resin leakage may result.
•
Do not hold or carry the pressure sensor by the thermocouple protecting flexible tube or the plug.
•
To prevent damage to the wire inside, do not bend the flexible jacketed cable or the flexible tube for the thermocouple less than the bending
radius (it should not be shorter than the fixed length) or forcibly pull or twist when handling.
3.3 Cautions during Extruder Cooling Down
If the temperature is decreased while resin remains in the
extruder with the pressure sensor installed, the
diaphragm may be depressed and
deformed by resin
contraction, etc. As a result, a measurement error or
pressure dead-band may occur. If the extruder is
cooled down,
completely remove all the resin remaining
in the barrel, or remove the sensor.
Especially take care for the low pressure sensor, as this effect
becomes serious.
3.4 Caution in Handling of Built-in Thermocouple
•
Do not stretch, twist, crush or bend the thermocouple protecting flexible tube extended from the outer cylinder or the thermocouple plug. If so,
the thermocouple may be damaged to disable temperature measurement or a temperature error may result.
•
The temperature sensing block is located about
2 mm within the diaphragm and as a result, the measured temperature usually becomes
lower than the actual temperature depending on the melted resin now being heat-generated within the barrel or dice.
A class
2 thermocouple (classification of tolerance: Equivalent to IEC 60584-2, Tolerance class 2, 1.0: 1982 b) is used in the
thermocouple temperature sensing block.
3.5 Dimensions
Fixed
nut
type (CZ-200P-H type)
φ
10
.3
※
Fixing screws of sensor finished t o JIS B grade.
Inst all t he sensor s o that each screw is smoot hly
insert ed.
M ounting hole dimensions
(U ni t: m m )
E xternal dim ensions
Connect or receptacle
P RC03
−
23A 10
−
7F
PF 3/ 8
(JI S B grade)
Diaphragm
30
15
75
13
L3
L
Dot ted
−
line section:
Dimensions of lead pipe c over (O ptional)
φ
38
φ
17
Outer cy linder
Flat head diameter
of hexagon nut: 23
L1
0
−
0. 2
φ
14
±
0.
1
φ
14.
6
L2
φ
10
−
0.
1
−
0.
2
T hermoc ouple
c onnector
(O ptional)
φ
20
L2
−
2
L1
φ
15
.2
±
0.
1
30
P F3/8
Inst all the sensor so that t he
diaphragm s urf ac e does not
prot rude f rom this surface.
φ
21
HA
HB
HC
HD
L
120
150
180
210
L1
8
8
8
8
L2
6
6
6
6
L3
60
90
120
150
St andard dimensions
W eight
Approx. 430 g
Approx. 470 g
Approx. 510 g
Approx. 550 g
+
0.3
+
0
Flexible tube * length: A pprox. 100 mm
* B ending radius of flexible tube: 19 mm or more
Loose nut type (CZ-200P-L type)
φ
30
50
L2
−
2
L1
PF3/4
Diaphragm
F lat head
bolt: 14
C type snap ring
Loose nut section
PF 3/4
(JIS B grade)
45 6
φ
18
−
0.
1
−
0.
2
φ
24
0
−
0.
2
φ
38
Connec tor rec eptacle
PRC03
−
23A10
−
7F
Outer
cylinder
φ
17
75
13
35 20
L
L3
L2
L1
0
−
0.2
Flat head diameter
of hexagon nut: 23
φ
24.
5
±
0.
1
φ
18
.3
±
0.
1
Mounting hole dimensions
(Uni t: mm )
External dimensions
※
Fixing screws of sensor finis hed to JIS B grade.
Install the sensor s o that each screw is smoothly
inserted.
Install the sensor s o that the
diaphragm surface does not
protrude from this surfac e.
Standard dimensions
Thermocouple
connec tor
(Optional)
LA
LB
LC
LD
L
120
150
180
210
L1
20
20
20
20
L2
10
10
10
10
L3
90
120
150
180
W eight
Approx.760 g
Approx.850 g
Approx.940 g
Approx.1030 g
+
0.3
+
0
Flexible tube * length: Approx. 100 mm
* Bending radius of flexible tube: 19 mm or more