YSI Professional Plus, Калибровочные советы, Страница: 12 / 28

port 1 only. Therefore, if the sensor installed in port 1 is not working properly, the readings from the sensor
installed in port 2 will be erroneous.
7. If you continue to get error messages during calibration, clean and recondition the sensor per the instructions
in the pH Troubleshooting section of this document. If you suspect port contamination, follow the instructions
in the Cleaning a Sensor Port section before reinstalling the sensor.
8. If you continue to have problems, you can check the offset of the ORP sensor by performing a factory reset
to the ORP sensor. After resetting the sensor, compare the ORP mV readings in Zobell solution to the
calibration value. The difference between values should be less than 100 mVs. If the difference is 80 mVs or
higher, consider replacing the sensor as it is nearing the end of its life span.
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