gefran I3 Series Instruction Manual page 28

2) C (CAl)
AlibrAtion
Application mode
Start CAL:
The Calibration function is activated by
short-circuiting the pin E – F for a mini-
mum time of 1 second.
Stop CAL:
Release the E - F short-circuit.
NOTES:
The Calibration function is not allowed for "external Autozero" version.
3) t
otAl reset of the CAlibrAtion vAlues
Application mode
The Autozero fuction can be activated in
the following ways:
1) Magnet has to be maintained on the
Autozero position for a time of 20 to 25
seconds.
2) Short-circuiting the correct pins
(e.g. pins E-F for the 6 pin connector) for
a time of 20 to 25 seconds, for the exter-
nal Autozero version.
NOTES:
During the total reset phase, the current output for the IE/IX transmitter series, can increase up to 7 mA.
Mainteinance and troubleshooting
In order to assure the correct execution of the safety function, it's necessary to make the following mainte-
nance activities:
Visual inspection of the process front end membrane and of the pitch of the thread
The activity evaluates abnormal abrasion or wearing due to uncorrect mounting or by aggresive process
materials.
The thread pitch inspection must assure the sensor integrity to avoid fluid outcoming from the extrusion
chamber or poor sealing of the sensor mounted in its side.
Periodicity: every 2 years.
Installation hole check
The activity evaluates the hole profile and dimensions in order to avoid failures or sensor bad functioning.
Periodicity: every 2 years.
28
Limits
The whole Zero unbalancement
in comparison to the zero done
by the manufacturer, has to be
± 20%FS.
Limits
Result
During the Calibration phase the signal
will be unbalanced to the 80% FS.
The calibration effect is visible 2 seconds
after short-circuiting E - F.
The Calibration function doesn't work
outside the defined limits.
Result
The Zero and Span of the transmitter will
be recalibrated to the factory settings.
80175G_MAN_I3-IE-IN-IX_I7_11-2018_ENG