To Quantify Leaks; Leak Alarm Level - Adixen H2000 PLUS 5.0 Manual Del Usuario

To Quantify Leaks

The Analysis mode* is used for measur-
GB
ing the size of a leak (or the concentration
of a gas sample).
To be able to do this measurement and ob-
tain correct values, the instrument must first
be calibrated using the calibration function.
See the following page and page 14.
In the Analysis mode the detector de-
termines the gas concentration from the
change, as the probe goes from being
exposed to background to being exposed
to a certain gas concentration. The detec-
tor does not continuously monitor the gas
concentration but takes just one reading
instead. Another suitable alternative name
for this mode could be Sampling Mode. It is
important to keep this in mind when using
the detector in this mode.
In Analysis mode the probe should be
moved directly from a background situation
to the test point. The size of the leak in PPM,
or any other selected unit**, is shown on
the display. The probe can and should be
removed from the measuring point as the
measured value remains on the display.
**Leak Rate Unit is selected in the Analysis Mode Settings menu, page 19.

Leak Alarm Level

Leak Alarm Level is set in decimal or
scientific format. The scientific format is
explained by the following example:
2.4 x 10
can be written:
2.4E–0.2 or 0.024

Adixen Scandinavia - User's manual H2000 PLUS
= 0.024
–2
Active mode: Analysis
0.5
– Volume
Hint: To switch between Detection
Mode and Analysis Mode simply
press the right hand button three
times.
The H2000
detector operates in the
PLUS
range 0 — 2000 ppm giving reasonable
linearity between 0 and 500 ppm. To obtain
best accuracy over this range, calibrate the
detector at a concentration somewhere bet-
ween 10 and 100 ppm. Generally accuracy
is always best near the concentration at
which it was calibrated.
*NOTE! The described working methods
and necessary settings are valid for Detec-
tion mode and Analysis Mode, either the
modes are used separately or as a part of
Combined Mode.
If entered incorrectly the previous value
will be retained. Always check that the
correct value is saved.
The unit used is the selected Leak Rate
Unit. See page 19 and 30.
PPM
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