Basic Leak Detection; Important - Adixen H2000 PLUS 5.0 Manual Del Usuario

Basic leak detection

H2000 PLUS has three different modes:
Detection Mode, Analysis Mode
and Combined Mode. The Combined
Mode is the default mode.
In Detection Mode you will see a bar
and hear a sound with a frequency that
increases as the probe approaches the leak,
and decreases as the probe is moved away
from the leak. No figures are shown on the
display, and the frequency is not an accurate
measure of the leak rate.
You will soon get used to listening for chan-
ges in the frequency rather than to the actual
frequency. Move the probe over the surface
of the tested object to detect and precisely
locate a leak, even when there are other
leaks nearby. Keep moving the probe to find
out where the signal increases and where it
decreases. Let the audio signal guide you
to the exact position of the leak.
If you expose the probe to a constant gas
concentration you will hear the frequency
continue to increase slowly until it even-
tually levels off, and very slowly declines
again. This takes 30 - 45 seconds for small
leaks and just a few seconds for large leaks.
The decline is the automatic background
adjustment coming into action. A gas
concentration being constant for several
minutes is being taken as an increased
background level.
N.B. Do not leave the probe tip in front of
a large leak for long times. Remove the tip
when the leak has been located.
In Analysis Mode figures are shown on
the display. These figures are an accurate
measurement of the leak rate. The detector
determines the gas concentration from the
change as the probe goes from being ex-
posed to background to being positioned
right on the leak.
The detector does not continuously monitor
the gas concentration but takes just one
reading instead. Another suitable alterna-
tive name for this mode could be Sampling
Mode. It is important to keep this in mind
when using the detector in this mode.
In Combined Mode the bar and the
sound in Detection Mode is combined with
the figures in Analysis Mode.
When you have located then leak you can
measure its size in the following way:
• Remove the probe from the leak.
• Wait until 0.0 appears on screen and the
put the tip of the probe right on the leak.
Note!
• The tip of the hand probe gets
!
warm when the instrument is in
use. This is normal.

Important!

• Always connect the probe
before switching on the in-
strument.
• Never put the probe in water
or any other liquid.
Adixen Scandinavia - User's manual H2000 PLUS
GB