1.5
1.7 Conversion of transducer measuring units
As supplied, the standard transducers within the analyser will measure in the units indicated in
Table 1.1. It is possible to change these units by the use of a linear scale factor (refer to
Quickstart manual). The user should note that the 4000 series software prime measurement
is in percentage, therefore trace level 'vpm' (volume parts per million) measurements already
have a scale factor of 10,000 entered as a default.
Example: to convert vpm SO
2
to mg/m
3
, a multiplier of 2.86 is used. As the software
actually converts from percentage levels, the overall scale factor entered as part
of the analyser configuration will be 28600.
NOTE
The following abbreviations are used throughout this manual:
Gfx Gas filter correlation infra-red transducer
IR Pulsed infra-red transducer
Pm Paramagnetic transducer
Zr Zirconia transducer
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