20
The protective cap should also be filled with a few drops of HI 70300
storage solution if the electrode is not being used at all.
Note: With industrial applications, it is always good practice to keep
at least one spare electrode handy. When anomalies are not
resolved with a simple maintenance, change the electrode to
see if the problem is alleviated.
ELECTRODE CONDITIONINGELECTRODE CONDITIONING
ELECTRODE CONDITIONINGELECTRODE CONDITIONING
ELECTRODE CONDITIONING
& MAINTENANCE& MAINTENANCE
& MAINTENANCE& MAINTENANCE
& MAINTENANCE
PREPARATION
Remove the protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT.
This is normal with electrodes and they will disappear when rinsed
with water.
During transport tiny bubbles of air may have formed inside the glass
bulb (membrane). Shake down the electrode as you would do with a
glass thermometer to remove these bubbles.
If the bulb and/or junction are dry, soak the electrode in a HI 70300
Storage Solution overnight.
STORAGE
To minimize clogging and assure a quick response time, the glass
bulb and the junction should be kept moist and not allowed to dry
out. This can be achieved by installing the electrode in such a way
that it is constantly in a well filled with the sample (stream or tank).
When not in use, pour a few drops of HI 70300 Storage Solution or,
in its absence, HI 7007 pH 7.01 Buffer Solution in the protective cap
and replace it on the electrode.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED
WATER.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. The cable used for the connection
to the controller must be intact and there must be no points of broken
insulation on the cable or cracks on the electrode stem or bulb.
The connector must be clean and dry. If any scratches or cracks are
present, replace the electrode. Rinse off any salt deposits with water.
CLEANING PROCEDURE
Soak in Hanna HI7061 General Cleaning Solution for ½ hour.
