INFICON D-TEK Select Bedienungsanleitung Seite 6

Finding Leaks
1. Place the tip of the leak detector probe as close as possible to the site of the
suspected leak. Try to position the probe within 1/4 inch (0.5 cm) of the possible
leak source.
2. Slowly (approximately 1 - 2 inches (2.5 - 5 cm) per second) move the probe past
each possible leak point.
NOTE: It is important to move the tip of the probe past the leak to get a
correct reading. D-TEK Select only responds to changes in
concentration of the refrigerant from the leak. Moving the probe
permits the instrument to respond properly to these changes.
3. When the instrument detects a leak source, its yellow LEDs will illuminate and
it will beep rapidly.
4. When D-TEK Select signals a leak, pull the probe away from the leak for a
moment, then bring it back to the location to pinpoint the leak.
5. If the concentration of the refrigerant gas is high, press the sensitivity switch to
change to the LOW sensitivity setting. The LOW sensitivity setting helps find the
exact site when a leak is large.
6. Once the leak source is isolated, return the sensitivity setting to HIGH to
continue using D-TEK Select.
7. When leak checking is complete, press the Power switch to turn D-TEK Select
OFF.
Using the Manual Zero Mode
D-TEK Select's automatic suppression of background contamination can be
disabled, allowing for the continuous display of a leak without "zeroing it out."
When D-TEK Select is set in the manual zero mode, the user may manually reset
or zero the detector.
To initialize this function, press and hold the HI/LO switch for 5 seconds. The "HI"
sensitivity indicator will flash to alert the user the detector is in manual zero mode.
Increases in concentrations of refrigerants will be displayed by the illumination of
the yellow LEDS. For best test results, allow D-TEK Select to warm up for
5 to 10 minutes before engaging manual zero mode.
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