YSI Professional Plus - Manual (Page 39)

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Long-term Storage - oRP
to store, remove the sensor from the cable and seal the vacant port with the
provided plug. Fill the original shipping/storage vessel (plastic boot or bottle)
with buffer 4 solution and then submerge the sensor into the solution. the sensor
should remain submerged in the solution during the storage period; therefore,
make certain that the vessel is sealed to prevent evaporation and periodically
check the vessel to ensure the sensor does not dry out.
Long-term Storage Temperature: 0 to 30°C (32 to 86°F)
Long-term Storage - Ammonium, Nitrate, and Chloride
the key to ISE sensor storage, short or long-term, is to make certain that the
sensor does not dry out. Sensor junctions that have been allowed to dry out due
to improper storage procedures may be irreparably damaged by the dehydration
and will require replacement. You can attempt to rehydrate the sensor by
soaking it (preferably overnight) in the sensor’s high calibration solution before
attempting to calibrate.
the recommended storage of these sensors is in moist air. Remove the sensor
from the cable and seal the vacant port with the provided plug. Place the sensor
in its original shipping storage vessel (plastic boot or bottle) with a small amount
of tap water or its high calibration standard. the vessel should remain a saturated
air environment. the sensor only needs to be kept in moist air, not submerged.
Make certain that the vessel is sealed to prevent evaporation.
Long-term Storage Temperature: 0 to 30°C (32 to 86°F)
t R o U B L E S H o o t I N G
Illegal Value may appear during alpha/numeric entry on the message line. this
only appears if the values entered do not match the formatting. this will also
appear in GLP security area if the password is incorrect.
If you forget the GLP Security Password please contact YSI tech Support at
[email protected], 800-897-4151, or +1 937 767-7241.
help
During use of the Professional Plus instrument, press Question from any
screen to view help messages directly on the display.
error MessaGes
If readings for a certain parameter are over range you will see a series of +++++
and if the readings are under range you will see a series of ----- plus the error
message along the bottom of the screen. If you see a series of ????? that will
indicate that a certain parameter can not be calculated. the following are
potential error messages:
Probe temp over range
Probe temp under range
Case temp over range
Case temp under range
pH over range
pH under range
oRP over range
oRP under range
Cl over range
Cl under range
NH4 over range
NH4 under range
No3 over range
No3 under range
Do over range
Do under range
Conductivity over range
Conductivity under range
Barometer over range
Barometer under range
Error messages for the sensors typically indicate a need to properly clean the
sensor. First verify the sensor is properly setup in the Sensor menu, then conduct
the recommended cleaning and attempt to calibrate the sensor. If this does not
work, it may indicate the useful life of the sensor has been reached and may need
to be replaced. You may also contact technical Support to help determine the
next step.