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ORP Calibration
22
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Press ENT key to exit from the calibration.
The pH Controller reverts to pH measurement mode.
5 5
NOTES:
To exit from pH calibration mode without confirming calibration,
Press
and
keys together
When confirming the buffer measurement, if the measured pH
value is not within
electrode annunciator
display. This error can also occur if non-standard buffers are used or
the electrode has worn out. If this happens, press both
keys together to restart the calibration beginning from Step1
When calibrating with manual temperature compensation, the
meter automatically changes from the preset process temperature to
the calibration temperature. After leaving the calibration mode, the
pH Controller reverts back to process temperature
The pH Controller allows a single point ORP calibration. ORP
calibration process is available only when the measurement mode is set
to ORP. (Refer Page 32 for switching measurement modes).
Figure 4–19. ORP Calibration
From ORP measurement mode p p ress CAL key to enter
1 1
calibration mode as described in page 16. The LCD shows
'C C AL OrP'. P P ress ENT key to begin calibration.
Place the electrode in a standard ORP solution of known
2
OPR value. Immerse the temperature probe in the buffer
solution if ATC mode is enabled. Immerse the potential
matching pin in the buffer if symmetrical mode is enabled.
The buffer annunciator
appear in LCD. The upper display shows the current mV
output of the electrode with offset adjustment (if any).
The lower display shows the default (uncalibrated) mV
output of the electrode. Allow the reading to stabilize.
LCD shows 'R R EADY' annunciator when the reading is
stable.
Press
or
www.
.com
1.00pH from selected buffer value, the
blinks and E E RR indicator appears in the
& electrode annunciator
key to set the upper display value to the
Thermo Scientific Alpha pH 560
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and
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