IM100CZ04-E4
6
5. ADJUSTMENT
Adjustment procedures
1.
Check the rated output (mV/V) described on the nameplate of
the CZ-100P (This output should be corrected when the cable is
extended.) and then set that value on the rotary switch which is
gain setter of the PCT-300.
2.
The pressure reading zero point is adjusted by the zero adjuster
in PCT-300. Perform this zero adjustment after the position
installed with CZ-100P on the extruder reaches the desired
temperature and is in the steady state after the lapse of a certain
time. If an indicator is not available, adjust the zero point on the
monitoring terminals using a circuit tester. In addition, perform
the above adjustment after warming up for 20 minutes or more
with the power switch of PCT-300 turned ON (power lamp lights)
after wiring has been finished.
When the gain setter and zero adjuster are set using small
screwdriver.
When the sensor is provided with the gain selection
function (optional), the output value is doubled if the
function is set to “
2,” which is effective for increasing the
reading at low-pressure. The valid range is within the
output range of PCT-300, which corresponds to half of
full-scale pressure.
Turn the FILTER switch to the OFF side (100 Hz,
3 dB)
when quick response is required. The FILTER switch is
turned to the ON side (10 Hz,
3 dB) prior to shipment.
Gain selector switch
(Optional)
FILTER switch
1
2
ON
OFF
When the following types of resin pressure sensors are used,
connectable instruments (output converter, indicator, etc)
and gain setting procedure are different.
Sensor types and connectable instruments:
Sensor type
Connectable instruments
CZ-100P-LLA Z-1024
PCT-300
CZ-100P-LLA Z-1024A
PG500, HA430, HA930
CZ-100P-LLA
(0.5 MPa range)
PCT-300, PG500, HA430,
HA930
Refer to page 6 for Gain setting adjustment of each
sensor type.
Gain setting for CZ-100P-LLA Z-1024 type:
1.
Make sure your PCT-300 has a selectable gain function (optional)
with a gain selector switch.
2. Read off the rated output value (Rated output: mV/V) from the
label on the pressure sensor, and set the value with the Gain
setter (rotary switch) on the PCT-300.
To make indication error compensation due to operating
temperature, cable length, or safety barrier, set the compensated
value on the PCT-300.
For more details of indication error, refer to
6. CORRECTION
in this manual.
3.
Then, set the selector switch (on the side of PCT-300, refer to
drawing on page 6) to “
2.”
Gain setting for CZ-100P-LLA Z-1024A type:
Set the RATED OUTPUT (Rated output: mV/V) value specified on
the label of the pressure sensor
at Gain setting in the Setup setting mode for PG500, and
at Gain setting in the Function block F21 in the Engineering mode
for HA430 and HA930.
To make indication error compensation due to operating temperature,
cable length, or safety barrier, set the compensated value.
For more details of indication error, refer to
6. CORRECTION
in this manual
Gain setting for CZ-100P-LLA (0.5 MPa range) type:
When a PCT-300 is used, the Gain setting procedure is the same as
that for CZ-100P-LLA Z-1024 type.
Refer to “Gain setting of
CZ-100P-LLA Z-1024.”
When PG500, HA430 or HA930 is used, enter a half value of the
RATED OUTPUT (Rated output: mV/V) specified on the label of the
pressure sensor
at Gain setting
1
in the Setup setting mode for PG500, or
at Gain setting
2
in the Function block F21 in the Engineering mode
for HA430 and HA930.
To make indication error compensation due to operating temperature,
cable length or safety barrier, set a half of the compensated value.
For more details of indication error, refer to
6. CORRECTION
in this manual
1
For Gain setting in Setup setting mode, refer to the PG500 Operation Manual
(IMR02F02-E
).
2
For Gain setting in F21 in the Engineering mode, refer to the HA430/HA930 Quick
Operation Manual (IMR01N16-E
).
6. CORRECTION
6.1 Correcting Indication Error due to the
Operating
Temperature
The pressure indication error caused by the difference between the
pressure sensor’s calibration temperature and the operating
temperature can be adjusted using the instrument’s gain setting.
The pressure indicator error [pressure sensor output (sensitivity)
temperature affect] is within a “±0.2 % of span/10 ºC,” but the
temperature affect can be corrected if necessary.
Correction procedure
1.
The rated output after the correction is calculated from the
following correction equation and correction factor.
e
1
= [1 + Correction factor
(T
Calibration temp.)]
e
0
e
0
: Rated output of the resin pressure sensor
e
1
: Rated output after the correction
T: Operating
temperature
Correction factor: Refer to below
(
The correction factor is the actual value and not the warranted value.
)
Correction factor:
Diaphragm material
Calibration
temperature
(
C)
Correction factor
SUS630 150
0.13
10
3
SUS630
Kanigen plate
150
0.13
10
3
HASTELLOY C
150
Please contact RKC sales office
or the agent.
HASTELLOY C
Kanigen plate
250
1.
Gain setter Monitor plug
Zero adjuster
Power lamp
PCT-300
PWR
ZERO
mV/V
MONI
