Calibration Coefficient - Adixen H2000 PLUS 5.0 Manual Del Usuario

Calibration Coefficient

GB
The H2000
defined leak rate units plus one custom unit.
The Leak Rate Unit is a text string. The
relation between the detector signal and the
displayed number is set by the Calibration
Coefficient.
The Leak Rate Unit is set in the Analysis
Mode menu. Select PPM, cc/s, cc/min,
SCCM, gram/year, oz/year, mbarl/s, mm
mm /min Pa m
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Measuring hydrogen
concentration
When measuring hydrogen concentration
the detector should be calibrated against a
reference gas with a known concentration.
The reference gas should be Hydrogen
in Synthetic Air. (Hydrogen in Nitrogen
can also be used, but the accuracy may be
impaired.)
Set the Calibration Coefficient to the
value of the known gas concentration. Set
the Leak Rate Unit to the same unit as the
Calibration Coefficient.
Example:
A reference gas contains 10 PPM Hydrogen
in synthetic air. Set Calibration Coeffi-
cient to 10 and Leak Rate Unit to PPM.
Note! It is important that the unit for Leak Rate Unit is the same as for the used
leak flow/concentration. If not — convert one of the values.
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Adixen Scandinavia - User's manual H2000 PLUS
detector has eight pre-
PLUS
/s or Custom. When you se-
3
lect Custom you can enter any unit as long
as it contains a maximum of 12 characters.
The unit can also be as a concentration, for
example PPM or mg/ml-H
Calibration can be performed against:
— a known hydrogen concentration,
or
— a known leak flow.
/s,
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Measuring Leak Flow
When measuring leak flow, calibrate the
detector against a reference leak.
The reference leak should have a flow close
to the chosen leak alarm limit. See also
section "Selecting the reference".
Set the Calibration Coefficient to the
certified value of the reference leak. Set
the Leak Rate Unit to the same unit as
the Calibration Coefficient.
Example:
A reference leak is certified to 1.5 cc/min.
Set Calibration Coefficient to 1.5 and
Leak Rate Unit to cc/min.
.
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