Inficon D-TEK CO2 Mode D'emploi page 5

D-TEK CO is highly selective for CO
2
natural background concentration of carbon dioxide of approximately 0.035%. To
prevent false alarms, it may be necessary to take steps to limit changes in this
background concentration from sources such as vehicle exhaust or your own
breath.
Headphone sets may be used with D-TEK CO
plugged into the detector, the audio signal will only be heard through the headset.
W A R N I N G
ONLY USE HEADPHONE SETS SUPPLIED BY INFICON. SERIOUS
HEARING DAMAGE MAY OCCUR IF OTHER HEADPHONE SETS
ARE USED.
Finding Leaks
1. Press the HI/LO button until the HI indicator is illuminated.
2. Place the tip of the leak detector probe close to the site of the suspected leak.
Try to position the probe within 1/4 inch of the possible leak source.
3. Slowly (approximately 1-2 inches 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 CO
CO
2
respond properly to these changes.
4. Watch for the yellow leak indicators to illuminate, and listen for a tone. When
the instrument detects a leak source, the yellow leak indicators will illuminate
and it will emit a different audible tone.
5. When D-TEK CO
moment, then bring it back to pinpoint the location.
6. If the concentration of carbon dioxide is high, press the HI/LO button once to
switch to LO sensitivity before repositioning the probe at the suspected leak
source. The LO sensitivity setting helps find the exact site when a leak is large.
7. Once you have isolated the leak source, press the HI/LO button to return the
sensitivity setting to HI to continue using D-TEK CO
8. When you have finished leak-testing, long press the power button to turn
D-TEK CO OFF.
2
only responds to changes in concentration of
2
from the leak. Moving the probe permits the instrument to
signals a leak, pull the probe away from the leak for a
2
(carbon dioxide). The atmosphere has a
2
. When the headphones are
2
5
.
2