55M4300CCE00 Rev A
The reading on the Sensor value is in bits and the maximum scale value is 4095. For the
zero setting the display should read between 175 and 300 bits. The units are shown at
the bottom of the screen and are in bar for metric calibration units and psi for imperial
calibration units.
2)
Press “
” to edit the zero value.
3)
Edit the zero value to read 0000.00, then press
“
”
to confirm the
value.
4)
Press
“
”
to return to the main calibration menu.
Warning:
The system does not store the ZERO PRESSURE into permanent memory until
the SPAN PRESSURE calibration has been completed. If a ZERO PRESSURE calibration is
done, then a SPAN PRESSURE calibration must also be done.
Span pressure calibration:
1)
Use
“
”
to choose “Span pressure” and press
“
”
.
The pressure sensor must remain disconnected from the hydraulic line. In the pressure
transducer interface box, turn the RCAL switch to ON if available or temporarily connect
the black and white wires of the relevant pressure sensor together.
As above, the reading on the bottom line represents the current bits value of the sensor,
for the span setting the reading should be above 3200 and not exceed 3850. If the
reading is outside of these values then adjust the gain setting jumpers in the transducer
interface unit to achieve the closest possible setting, refer to the label inside the
interface unit for guidance. The standard gain setting number is 325, other options are
219, 253, 413, 579 and 630; a higher gain setting will result in a larger span setting
value.
2)
Press
“
”
to edit the span load value.
3)
Edit the value to match the figure engraved on the pressure sensor, a typical
value will read: CAL 285.6 bar. If there are two lift cylinders and one pressure
sensor on the bore side of each cylinder connected in parallel, enter the average
of the 2 engraved values.
4)
Press
“
”
to return to the main calibration menu.
5)
Turn the RCAL switch to OFF if available or put the black and white transducer
wires to their original connections and reconnect the hydraulic line.
Repeat step #12 for each pressure sensor in turn.
Summary of Contents for i4300
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