Model P53 pH/ORP Analyzer (universal-mount 1/2 DIN)
Rev. 6-501
6
CONDENSED OPERATING INSTRUCTIONS
D. CALIBRATING THE ANALYZER -- (continued)
Section 4.2, subheading “SELECT BUFFER Set for pH Calibration”).
NOTE:
When using buffers that are not included in either of these buffer sets, use only
the “2 POINT SAMPLE” method for calibration. Refer to that subheading in
PART THREE, Section 5.2 for instructions.
2. Immerse the sensor in the first buffer (preferably pH 7).
Important: Allow the sensor
and buffer temperatures to equalize.
Depending on their temperature differences,
this may take 30 minutes or more.
NOTE:
An in-progress calibration can always be aborted by pressing the
ESC key
.
After the “ABORT: YES?” screen appears, do one of the following:
•
Press
ENTER key
to abort. After “CONFIRM ACTIVE?” screen appears,
press
ENTER key
again to display the MEASURE screen and return the
analog outputs and relays to their active states.
•
Use
×
×
or
Ø
Ø
key
to choose “ABORT: NO?” screen, and press
ENTER key
to continue calibration.
Calibration Tip!
If, at any time during calibration, the “2 POINT BUFFER: CONFIRM
FAILURE?” screen appears, press
ENTER key
to confirm. Then, use the
×
×
or
Ø
Ø
key
to select between “CAL EXIT” or “CAL REPEAT” and do one of the following:
•
With the “2 POINT BUFFER: CAL: EXIT?” screen selected, press
ENTER key
.
Then, after the “2 POINT BUFFER: CONFIRM ACTIVE?” screen appears, press
ENTER key
to return the analog outputs and relays to their active states
(MEASURE screen appears).
•
With the “2 POINT BUFFER: CAL REPEAT?” screen selected, press
ENTER key
to repeat calibration of this point.
3. Press
MENU key
to display
&21),*85(
7(670$,17
(;,7
.
4. With the “CALIBRATE” line selected, press
ENTER key
to display
.
5. With the “SENSOR” line selected, press
ENTER key
to display
.
(continued on next page)
