Operation
46
⏐
GA10.218_1.01 - 11/2004
5.3.1 Gas Ballast
In stand-by mode the gas ballast of the fore pump can be switched on/off
manually or via softkey 7. The gas ballast is for abolishing a too huge
helium background. Additionally a condensation of water vapour in the
pump will be avoided. After 20 minutes the machine closes the gas ballast
valve automatically to limit the loss of oil.
Attention
In case there was a large quantum of water vapor pumped with
the machine please activate the gas ballast for about 20 minutes
before running the machine down.
5.4 The Screen in Measurement
Mode
In measurement mode the leak rates can be displayed in two different
modes:
• Numerically, combined with a bargraph
• Trend mode (leak rate versus time)
In the lower right corner of the display (next to the Soft Key no. 8) you will
find a symbol that allows to switch between the display modes by pres-
sing Soft Key no. 8.
for explanations of the different display modes.
Access to calibration (Soft Key no. 5) and access to the speaker volume
(Soft Keys no. 2 and no. 3) is the same in all modes. Also the status icons
in the upper line are in common in all display modes.
5.4.1 Call for Calibration
In all modes the Soft Key no. 5 is used to get to the calibration routine.
Refer to Chapter
for further information regarding calibration.
5.4.2 Speaker Volume
On the left hand side two loud speaker symbols are shown, combined
with the signs + and -. By pressing the corresponding softkeys (Soft Keys
no. 2 and no. 3) the volume can be adjusted for convenient loudness. In
the bottom line of the display another loud speaker symbol is shown,
combined with a number. This number indicates the level of the current
loudness (ranges from 0 to 15).
Fig. 14 Display, Measurement Mode
Содержание PhoeniXL300
Страница 18: ...General Information 18 GA10 218_1 01 11 2004 ...
Страница 30: ...Operation Check 30 GA10 218_1 01 11 2004 ...
Страница 44: ...Working Principle 44 GA10 218_1 01 11 2004 ...
Страница 48: ...Operation 48 GA10 218_1 01 11 2004 refer to Chapter 6 2 1 Scale linear logarithmic Fig 15 Display Trend Mode ...
Страница 82: ...Menu 82 GA10 218_1 01 11 2004 ...
Страница 86: ...Calibration 86 GA10 218_1 01 11 2004 ...
Страница 98: ...Maintenance 98 GA10 218_1 01 11 2004 ...
Страница 101: ......