Felix Storch F-900, Инструкция по эксплуатации

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F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835 7
www.felixinstruments.com
Figure 4: Flow path diagram of the F-900 ethylene analyzer. Dashed line indicates optional flow
path capabilities.
Interfering Gases
No analytical method is completely specific. Gases present in the environment, other than the
target gas of a measurement, may affect instrument response. Interferences are not necessarily
linear, and may also exhibit time dependent characteristics.
Ripening fruit emits a complex mixture of hydrocarbons, including ethylene. Oxidation of these
other gases in the electrochemical sensor cannot be readily distinguished from ethylene. This
causes the ethylene value to be falsely high in the presence of interfering gas. Felix Instruments
has tested a method to absorb some of the competing gases and provide better ethylene
measurements. This method, PolarCept, uses distilled water in conditioning Chamber In and
has been shown to filter out alcohols and produce less interference.
PolarCept
PolarCept is the use of distilled water in conditioning Chamber In to filter out or trap some of the
interfering gases. Gas from the sample environment is passed through the water trap. Some of