Calibrated
H
e
l
i
um
l
e
a
k
s
7
Helium 3 and
Hydrogen
calibrated
leaks
Principle
external calibrated
leak
recalibration
There
are
several
types of calibrated
leaks, with or without reservoir, with
or without valve, covering
several
leak
ranges.
The
choice of the appropriate
external calibrated leak depends on the
application requirements.
For further information on the Adixen
calibrated leaks, please refer to our
product catalog or
consult
your local
A.
V
.
T
.
F
.
sales
engineer.
Most of the Adixen calibrated leaks are
delivered with a calibration certificate.
The manufacturer
does not supply the calibrated leaks in Helium
3
and Hydrogen.
All Adixen calibrated leaks are based on permeable membrane
technology.
Most calibrated leaks last many years even though the helium is
permanently
escaping (the leak rate is very small in comparison to the
amount of helium contained in the reservoir: yearly
loss
is indicated
on the calibrated leak identification label).
However, it is
recommended
to have every calibrated leak (with
reservoir)
recalibrated on regular
intervals
to validate its value: this is
applicable for both internal and external calibrated leak
s.
Recalibration
period of the calibrated leak depends on its leak rate
value.
Recommendation
for proper Quality Control:
THE RECALIBRATION INTERVALS SHOULD
NOT
EXCEED
2 YEARS.
Please consult
your local Alcatel
Sales representative
for additionnal
information.
Calibration
accessor
y
8
Used to
connect
the alibrated
leak and the sniffer probe for
a calibration.
7
/
14
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