OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
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Calibration
Pressure Transducer
The pressure should be calibrated on new instruments and whenever the
pressure transducer has been replaced. For further assistance, contact
OFITE Technical Support.
1. Assemble the UCA cell (page 33), but do not fill it with cement.
2. Carefully place the cell into the heating jacket and attach the water supply
line (page 36). Do not put the thermocouple into the cell.
3. Connect a calibrated gauge to the thermocouple port on the cell cap but
do not tighten it complete.
4. Slowly turn the Water Supply valve to “FILL”.
5. Watch for water to leak from the thermocouple port. When water starts to
leak, immediately tighten the gauge with a wrench to seal the cell. This
will ensure that all air has been purged from the cell.
6. Set the Pressure switch to “AUTO”.
7. Turn the Water Supply valve to “OPERATE”.
8. Access the pressure calibration:
a.
In the software, select Utilities → Cell 1 (or Cell 2) → Calibrate →
Pressure Transducer.
b. In the Onboard Display, go to the Calibration screen and select
“Pressure”.
9. The calibration routine will go through a series of pressures. At each one,
wait for the value on the calibrated gauge to stabilize and then enter it
in the “Calibrated Gauge” field. Then click the “Accept” (software) or “>”
(onboard) button.
10. When all steps are complete, you will see the calibration data, including a
Pass or Fail.
11. Click the “Save” (software) or “Apply” (onboard) button.