PART THREE - OPERATION
SECTION 5 - ANALYZER CALIBRATION
Model P53 pH/ORP Analyzer (universal-mount 1/2 DIN)
Rev. 6-501
68
2.
Press
MENU key
to display
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.
3.
With the “CALIBRATE” line selected, press
ENTER key
to display
.
4.
With the “SENSOR” line selected, press
ENTER key
to
display
.
5.
With the “1 POINT SAMPLE” line selected, press
ENTER key
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 sample (or reference solution)
and the
screen displayed, press
ENTER key
to confirm. This active
screen appears showing the measurement reading.
7.
Wait for the reading to stabilize. Then press
ENTER
key
. The “PLEASE WAIT” screen may appear if the
reading is still too unstable. After the reading has stabi-
lized, this static
screen appears
showing the “last” measured value.
8.
If not using an ORP reference solution, determine the
mV value of the sample using laboratory analysis or a
calibrated portable ORP meter.
9.
With the static
screen displayed, use
arrow keys
to adjust the displayed value to exactly
