INFICON Protec P3000(XL) Helium Leak Detector - Manual (Page 40)

3-6
Operation of the Protec P3000
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The Protec P3000 may automatically go into standby after a preset time of
inoperation (see Chapter
4.3.1 for details on how to set-up this function) and
operation will automatically resume if the probe is picked up again.
The Protec P3000 can also be set into STANDBY mode manually by pressing the left
probe button for 2 seconds. If the Protec P3000 has been set into STANDBY mode
manually operation will only resume by pressing any of the two probe buttons again.
Operating in moist
environment
For operation in an environment where moisture (e.g. condensating water) may
occur, a water-protection tip is available (Cat. no. 12246) which will protect the
Protec P3000 against intake of liquids if necessary. For details on how to install the
water potection tip see
1.6.2 )
Protection mode and high
helium background
The Protec P3000 is equipped with a protection mode against contamination with
huge amounts of helium. This contamination mode will help the leak detector to clean
up faster after detection of gross leaks.
If the Protec P3000 switches to
GROSS MODE the item „GROSS“ is displayed and an
acustic signal is to hear.
If a huge amount of helium is detected the Protec P3000 may show the message
HELIUM CONTAMINATED . The leak detector will come back to measurement mode
automatically after clean up and the displayed item „GROSS“ disappears.
Notice The Protec P3000 should not be switched off or set to STANDBY mode while
HELIUM CONTAMINATED is displayed as this will trap the increased levels of
helium inside the sensor and it cannot be pumped away for clean up of the
Protec P3000. Switching off the Protec P3000 while contaminated with
large concentrations of helium will in fact lead to significantly increased
start-up times afterwards. If this has happened unintentionally, just switch
on the Protec P3000 and let it sit in "Warm up" until it reaches
measurement mode.
Notice In HIGH FLOW mode leak rates in the range < 1x10
-5
mbar l/s are reduced
during a time of 30 Sec. to the current background value.
For details on how to set up the CONTAMINATION LIMIT please refer to Section 4.4.1 .
3.4.1 Standard Operation Mode
Provided the Protec P3000 has been set-up to meet the requirements of the
particular application and it has been calibrated (see Section
3.5 ), a measurement is
performed as follows:
Caution
Do not suck in any liquids.