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10 Troubleshooting
10.1 PIN is not working
You can block the keyboard. Make sure, that third doesn’t know this PIN. If you
don’t remember the PIN, please contact your supervisor. In emergency cases
proMtec can override your PIN.
10.2 Constant offset
SYSTEM / SENSOR / CALIBRATION / COEFFICIENT
Maybe you will find a constant offset.
After saving the settings (see above), you can change the settings without any
troubles.
To correct the offset, the best way is just to add the difference to a0.
This should not be given to the operator as a legal action, hence the BRIX-meter
is calibrated to laboratory value and the seed point value is linked to
temperature and purity. The seed point value should be set in the DCS system.
Later you can take some samples and add them to the actual spreadsheet and
compare them with the old samples.
This is possible, if you haven’t meanwhile
•
Given a new ref-point,
•
Changed ref-correction or
•
Calibrated the Pt-100.
