YSI ODO200 - Manual (Page 19)

13
LONG-TERM STORAGE
For long-term storage (>30 days), remove the battery from the
instrument. Moisten the sponge in the calibration/storage sleeve with
a small amount of clean water and place this over the probe with the
sensor cap and sensor guard installed. Inspect the sponge every 30
days to make sure it is still moist.
Alternatively, you can place the probe with sensor cap directly in a
beaker or other container of water, making sure that the water does
not evaporate over time.
TROUBLESHOOTING
Erroneous dissolved oxygen readings typically indicate a need to
clean the sensor cap, replace the sensor cap, and/or recalibrate the
instrument. First, clean the sensor cap following the instructions in
the Maintenance section and then perform a calibration. If erroneous
readings persist, inspect the sensor cap for damage (cracks, large
scratches in paint or dye layer), replace if necessary, enter new
coefficients and then attempt to recalibrate the instrument.
If the sensor cap is not damaged, try to rehydrate the sensor cap then
recalibrate.
If you are still getting erroneous dissolved oxygen readings, try replacing
the sensor cap, enter the new coefficients and then recalibrate. If the
erroneous readings continue, contact YSI Technical Support to help
determine the next step.
Symptom Possible Solution
Instrument will not
turn on, the BAT
symbol displays
on the screen. 1. Low battery voltage, replace batteries.
2. Batteries installed incorrectly,
check battery polarity.
3. Return system for service.
Temperature values
display Over or
Undr on Run screen. 1. Sample temperature is less than 0° C or more
than +50°C. Increase or decrease the sample
temperature to bring within the allowable range.
2. Contact YSI Tech Support. Possible temperature
sensor failure.