Oerlikon CENTER TWO, Operating Manual

Page: 43 / 102

42
GA 09.035/6.02 - 07/2011 - © Oerlikon Leybold Vacuum
Parameters
5.2.3 Measuring range (
FS
)
Linear transmitters (CTR) require specification of the full-scale range. You can
set this value using the cursor buttons. The following values are available:
„ 0.01 mbar
„ 0.01 Torr, 0.02 Torr, 0.05 Torr
„ 0.10 mbar, 0.25 mbar, 0.50 mbar
„ 0.10 Torr, 0.25 Torr, 0.50 Torr
„ 1 mbar, 2 mbar, 5 mbar
„ 1 Torr, 2 Torr, 5 Torr
„ 10 mbar, 20 mbar, 50 mbar
„ 10 Torr, 20 Torr, 50 Torr
„ 100 mbar, 200 mbar, 500 mbar
„ 100 Torr, 200 Torr, 500 Torr
„ 1000 mbar, 1100 mbar
„ 1000 Torr
„ 2 bar, 5 bar, 10 bar, 50 bar
DI gauge heads
„ 200 mbar (
di200
)
„ 2 bar (
di2
)
„ 2 bar relative (
dir2
)
5.2.4 Offset (
oFS
)
When the offset correction is activated, a previously specified offset value will
be subtracted from each pressure reading. This allows to conveniently mea-
sure the relative pressure with respect to a reference pressure.
The offset correction affects the readings on the display, the RS232C output,
the recorder output, and the switching functions. The analog outputs, how-
ever, are not affected.
Establishing an offset value and activating the offset correction
1 Select the
oFS
parameter
2 Keep the UP button pressed for approximately 2 seconds
„ The current pressure reading becomes the new offset value
„ The offset correction is activated
„ The OFS indicator is illuminated
Deactivating the offset correction
1 Select the
oFS
parameter
2 Press the DOWN button
„ The offset correction is deactivated
„ The display shows
oFF
„ The OFS indicator is dark
Activating the offset correction
1 Select the
oFS
parameter
2 Press the UP button