Bio-Science CI-900, Руководство по эксплуатации

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CI-900 Instruction Manual 8/10/2015
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Sensor Voltammetry should only be used if instructed by a CID technician.
Sensor voltammetry is the electrode recovery mode and is a useful tool if the electrochemical cell
has been poisoned. However, running Sensor Voltammetry may cause the calibration to shift,
changing the data displayed on the screen.
During this process the pump will be turned off and a series of voltage 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.
Cell Hydration menu features options and details about the water status of the electrochemical
sensor. The weight is set to 0.00 grams when the electrochemical cell is completely full, prior to it
being shipped from CID Bio-Science, Inc. As the cell loses water, the weight will become a negative
value. If the weight is greater than -10.0 g, the instrument should be hydrated by 10 cc (1cc = 1 g). A
positive value indicates hydration, a negative value indicates dehydration of the cell.
A message on the display to “check cell hydration” indicates 2 possibilities: the ethylene sensor is
dehydrated or overhydrated. Rehydrating the ethylene sensor is critical to maintain the instrument
and accurate readings.
When this message appears, weigh the entire CI-900 (with no water or consumables in the
conditioning chambers). Compare this weight to the weight on the Production Check Sheet on the
last page of this manual.
To rehydrate the electrochemical sensor, the instrument should be in the closed loop mode.
Distilled water should be placed in Chamber In and it should be enabled.
Let the instrument
run for 12 hours to rehydrate the ethylene sensor. Press stop to exit this mode and return to the
Setup Sensor Menu. Re-weigh the instrument to determine if more hydration is needed.
Always
have fresh distilled water in Chamber In when rehydrating the electrochemical cell.
To dehydrate the sensor, place the instrument in closed loop mode with silica gel (humidity
scrubber) in one of the conditioning chambers. Enable the chamber with the silica gel and let run
overnight. Press stop to exit this mode and return to the Setup Sensor Menu. Re-weigh the
instrument to determine if more hydration is needed.
Cell Hydration
Weight (g) -000.297709
RH sync
RH reset