PROGRAMMING
4-7
can be detected by the installed UV lamp will actually be
displayed. Note that although the correction factor for the
new gas will be displayed and can be modified, this factor
is not applied when Memories #1-7 are used. Therefore
the factor will not affect the readings in these memories.
Once each of the memories has been calibrated, the user
can switch between the calibrated gases by changing the
cal memory without the need to recalibrate. Or the user
can switch the measurement gas in Memory #0 and the
appropriate correction factor will automatically be applied
without the need to recalibrate. If the gas is changed in
Memories #1-7, it is necessary to recalibrate.
To change a default gas from the list above to a library or
custom gas, first go to Select Cal Memory (Section 4.4.3)
and then proceed to Modify Cal Memory (Section 4.4.5) to
enter the desired gas. If the desired compound does not
appear in the preprogrammed library, the user can use the
Custom_VOC entry in the library, or the name and
correction factor of any of the existing compounds can be
changed as described in Section 4.4.5. A list of some 300
correction factors is given in Technical Note 106, available
at the website www.raesystems.com.
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