INFICON Protec P3000(XL) Helium Leak Detector - Manual (Page 52)

3-18
Operation of the Protec P3000
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After pressing the CAL button, please check whether the leak rate equals the leak rate
of the external leak you plan to use. If the leak rate is different press EDIT LEAK RATE
and enter the correct leak rate value. Press “S TART ” afterwards to begin with the
calibration process.
Please hold the sniffer tip to the outlet of the external calibrated leak. Hold the sniffer
tip steady and very close to the opening, however, do not clog the opening with the
sniffer tip. Some air also needs to enter the sniffer tip in addition to the helium from
the external calibrated leak. If the leak rate signal indicated by the bar graph is stable
press “
OK ”. Keep holding the sniffer tip steady in front of the opening while the Protec
P3000 reads the leak rate of the calibrated leak. During this time the text “Please
wait…” will be displayed.
When the analysis of the calibrated leak signal is completed a message “sniff air!”
will be displayed. Remove the sniffer tip from the opening of the calibrated leak and
hold the sniffer tip into the air, as far as possible from any sources of helium. Wait
until the bar graph shows a stable signal again and press “ok” once more.
Fig. 3-19 Setting-up the leak rate of the external leak
Fig. 3-20 Calibration screen during external calibration