PART THREE - OPERATION
SECTION 4 - ANALYZER CALIBRATION
Model P33 pH/ORP Analyzer (panel-mount 1/4 DIN)
Rev. 6-1100
54
☞
4.
Press
ENTER key
again to display
.
5.
Press
ENTER key
again to display
.
Use
×
×
or
Ø
Ø
key
to view the three states that the analog
outputs (and relays) can be in during calibration:
•
HOLD OUTPUTS:
Holds their present values.
•
XFER OUTPUTS:
Transfers to preset values.
•
ACTIVE OUTPUTS:
Responds to measured values.
With the desired choice displayed, press
ENTER key
to
enter this selection.
6.
With the sensor in the first buffer and the
screen displayed, press
ENTER
key
to confirm.
While the
screen is displayed, the
analyzer waits for the pH and temperature signals to
stabilize, measures the buffer value, and automatically
calibrates this point.
Thereafter, a screen like
appears
for 5 seconds to confirm calibration of this point.
NOTE:
Any time the “PLEASE WAIT” screen appears
during calibration, you can manually complete
calibration of the point by pressing the
ENTER
key
. However, this is not recommended be-
cause the pH and temperature signals may not
be fully stabilized, resulting in an inaccurate
calibration.
7.
After the
screen appears, remove
the sensor from the first buffer, rinse it with clean water,
and immerse it in the second buffer (typically 4 pH).
8.
Press
ENTER key
to confirm.
While the
screen is displayed, the
analyzer waits for the pH and temperature signals to
stabilize, measures the buffer value, and automatically
calibrates this point.
