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Note: If a pressure calibration has been previously performed it is possible to erase the calibration
by pressing the Clear functional key.
The “Calibration cleared” message will be displayed for a few seconds and the meter will
return to the main screen.
If the measured pressure is too far from the calibration point the “Wrong pressure” error
message will be shown on the display and the calibration can’t be confirmed.
Verify if the value read from the reference barometer was entered correctly.
Contact the Hanna Service Department if calibration cannot be performed.
PRESSURE CALIBRA
TION
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