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Veris Technologies MSP EC and pH (1997-2008 floppy disk drive 1.02E) - Operating Instructions User Manual

Page 35

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Veris Technologies

Pub. #OM MSP03-1

35

18.

After 10 seconds, the instrument will display the final pH reading and offer the options to 1)
Accept pH 7 buffer readings; 2) Redo pH buffer 7 readings; or 3) Exit pH electrode calibration
.
If the readings are satisfactory, log pH 7 reading and press 1; if the readings are suspect, press
2 to return to step 16.

19.

After accepting the pH 7 buffer readings, the Instrument will determine if each electrode’s
response is sufficient to provide suitable readings. A score is displayed for each electrode; the
acceptable score range is between 75 and 102. If both electrodes are within this range, the
instrument will display the following screen:


20.

If an ‘X’ is displayed beside one or both electrodes’ scores, this indicates that one or both of the
electrodes did not perform well enough for continued reliable use. No calibration settings are
changed if calibration is unsuccessful. The electrode(s) responsible for failed calibration should
be removed and either cleaned or replaced and the calibration procedure repeated. See
Maintenance section for electrode cleaning instructions.

21.

The results of calibration are stored in a file on the instrument. for instructions on downloading
and/or deleting this file, see below.


Downloading/deleting electrode log file
1.

Enter menu option 2) pH Setup:


2.

Enter menu option 2) Manage ISE file:


3.

From this screen, press 1) to download the electrode log file or 2) to delete the log file.


4.

To download the file, select option 1. Insert a floppy disk when prompted and press any key.
The file will be saved to the floppy disk. The file is named ISE.TXT and will contain information
about electrode calibration. Here is an example file: