Felix Instruments F-900, Руководство по эксплуатации

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F-900 Instruction Manual rev. 1/16/2014
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone (360) 833-8835 Fax (360) 833-1914
sales@felixinstruments.com http://www.felixinstruments.com
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During this process the pump will be turned off and a series of voltages changes will occur on the
sensor. First, voltage changes serve to oxidize anything on the electrode, followed by reduction and
finally, a re-stabilization period for the sensor. The cleaning will take about 40 minutes to
complete, and the sensor may be very sensitive and noisy for a period of time following the
cleaning.
If Sensor Voltammetry is selected by mistake, please press the STOP key to exit, as instructed on the
display.
Closed Loop Cleaning closes the inlet and outlet valves on the instrument and recirculates the
internal gases within the unit. This is useful for purging the cell of high concentrations of C
2
H
4
and
can be used when moving from a high to low C
2
H
4
environment. A screen similar to the Monitor
Mode screen will appear, but the F-900 is cycling through the air inside the unit and is not be
sampling the incoming air. Press stop to exit this mode and return to the Setup Sensor Menu. If
Chamber A or B have been selected in the setup menu, or during measurements in Monitor Mode,
then they will be included in the closed loop cleaning process.
Closed loop cleaning can also be accessed from the Monitor Mode screen by pressing the UP and
DOWN arrows simultaneously. If initiated using these hot keys, the screen will stay in Monitor
Mode, but the unit will read “close loop” at the bottom of the screen, indicating that the inlet and
outlet valves are closed.