INFICON HLD6000 Refrigerant Leak Detector - Manual (Page 44)

44
6 Operation
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The gas that leaks from the calibration leak is carried away by strong air currents. Keep this
in mind when, for example, a fan blower is standing in your surroundings. Strong air cur-
rents provide false results when calibrating.
If you have assembled an extension hose for the sniffer tip then before calibrating with the
internal COOL-Check insert a centering ring to make the calibration opening on the device
smaller
see "5.3.4 Using an extension hose for a sniffer tip", page 26 . The centering ring is
contained in the shipment of a set with extension hoses for the sniffer tip.
Calibrate the device at least five minutes after switching it on. After the warm-up phase it
is ensured that the device calibrates optimally.
6.4.6.2 Calibration with an internal COOL-Check
A COOL-Check has a life of about 2 years. It is announced on the basic unit that the life of
the COOL-Check is running short 3 months before this time has elapsed.
For this reason never keep a supply of COOL-Checks. Store the COOL-Check in a cool, dry
place.
Fig. 13: Display when calibrating internally
1 Switch to measurement display .
2 There are 2 options:
– If you are prompted to calibrate then lead the sniffer tip into the calibration opening
at the front of the basic unit.

Calibration takes place automatically.
– If you are not prompted to calibrate, but wish to do so anyway then lead the sniffer
tip into the calibration opening at the front of the basic unit whilst holding down the
button on the sniffer probe.

Calibration takes place automatically. If the button on the sniffer probe is not pressed
then the calibration is only checked
see "6.4.6.4 Checking the calibration with an in-
ternal COOL-Check", page 45 .
3 Keep the sniffer line still and straight during calibration.
The display shows individual calibration phases and informs you whether or not calibra-
tion was successful.