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Changing Pressure Gauge Curves
The Terranova® 907 is able to output pressure readings based on the pressure curve of either
the Granville-Phillips 275 Convectron® gauge (i.e. 275) and equivalent sensors or the MKS / HPS
Series 317 (i.e. CEP) sensor. The default pressure gauge curve is CEP.
To change pressure gauge curves:
1.
Remove power from the control unit
2.
Simultaneously depress the
RAISE
and
SELECT
buttons while restoring power to
the control unit
3.
Release the buttons once the Self-Test has initiated
If pressure gauge curve change is successful, two BEEPs will be emitted and
the corresponding
pressure curve code
will appear on the unit display. Thereafter, the Terranova® 907 will resume
normal operation.
Pascal Mode
Pascal Mode disables the ability to change pressure units via the front panel and strictly outputs
pressure measurement in Pascal units. The Pascal mode only applies to the capacitance
diaphragm pressure gauge.
To enter or exit Pascal Mode:
1.
Remove power from the control unit
2.
Simultaneously depress the
RAISE
,
LOWER
, and
SELECT
buttons while restoring
power to the control unit
3.
Release all three buttons after the Self-Test has initiated
If Pascal Mode is entered successful, two BEEPs will be emitted and
t
he model number will be
output with an appended letter J (i.e. 907J). Once the front panel buttons are released, the Self-
Test will continue and the Terranova® 907 will resume normal operation. See
Appendix 3
for
Pascal unit display format.
