Calibration Of Viscometer - Hitachi IJ RX2 Service Manual

2.6 Calibration of Viscometer

2.6.1 Calibration of viscometer
●The calibration of viscometer is to determine the "coefficient" inherent in the equipment.
●Calibrate the viscometer when installing equipment. Normally, calibrating it once is enough.
However, calibrate the viscometer again when changing the ink type, and also calibrate a
new viscometer after replacement.
●Be sure to calibrate the viscometer using new ink.
●Calibrating the viscometer can be done regardless of the ambient temperature.
1 Press Viscometer calibration Start/Continue on the second page of the circulation
control menu of maintenance.
If Viscometer calibration is not displayed on the circulation control menu, set to the service
personnel maintenance mode on the login user selection screen.
For information on changing to the service personnel maintenance mode,
refer to "2.1 Setting of service personnel maintenance mode."
The viscometer calibration screen is then displayed.
Viscometer calibration
<the previous calibration>
Exec.time 2015/07/07 11:30
Plunger falling time
1st X.XX (sec)
2nd X.XX (sec)
3rd X.XX (sec)
4th X.XX (sec)
5th X.XX (sec)
Average X.XX (sec)
Ink temperature
Standard X. XXX (mPa▪s)
Coefficient XXXX
Ink refilling log 2015/07/07 11:00
After "ink drainage" is completed, perform "ink refilling" of
a new ink first, then click [Start calibration].
2 Press Start calibration.
During the viscometer calibration, the processing state "in progress" is displayed.
*) When the operation confirmation of the viscometer is performed without the calibration,
press Operation test .
[Note] Record the coefficient value or data backup is recommended.
The coefficient value is recorded in the memory on EZJ128 board.
So at the replacement of EZJ128, the calibration with new ink will be
required in case that the value is not recorded nor made a backup.
When the calibration of viscometer is performed continuously for a
number of times, ink temperature within the viscometer increases and
the accuracy of coefficient value is disturbed. Set a limit to the
number of times of performing viscometer calibration to not more
than 3 times. If in any case it needs to be performed more than 3
times leave for about 30 minutes before performing again.
[Stop
< the latest auto replenishment >
Exec.time 2009/07/07 12:45
Plunger falling time
1st
2nd
3rd
4th
5th
Average
XX ( ) Ink temperature
Standard
Coefficient
Ink viscosity
2-22
]
Com=0 2015.07.07 12:45
X.XX (sec)
X.XX (sec)
X.XX (sec)
X.XX (sec)
X.XX (sec)
X.XX (sec)
XX ( )
X. XXX (mPa▪s)
XXXX
XXX
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