3
5.
ELECTRODE & SENSORS
The pH electrode is one of the important sensing elements in the pH
measuring system. Understanding and maintaining the electrode in
good conditions will ensure consistent and accurate measurement all
the time.
5.1
The supplied pH electrode is a plastic body combination sealed
general-purpose electrode with build in temperature sensor.
5.2
There are specialized electrodes for different purpose and for
measuring different liquid. This general-purpose electrode should
only be used to measure city water. It is not made for measuring
ultra-pure water, high viscosity liquid, cream, oil or solvent based
liquid. Specialized electrode can be purchased separately for
your specific needs.
5.3
The pH electrode is an electro-chemistry sensor
that contains special chemicals and a pH sensitive
glass bulb. The glass bulb is half of the measuring
element and must be kept wet to enhance speed of
measurement. If the sensor is dried out, it will take
a longer time to get hydrated. The other measuring
element is the reference element, which contain
concentrated chemical with a liquid bridge of porous
fiber, allowing controlled contact with the measuring
liquid. In order to keep both sensors in ideal
condition; the electrode is constantly soaked in a
specially formulated liquid concentrate.
5.4
Before using the electrode,
unscrew the soaker bottle then
_
remove the cap. Rinse the sensor area with distilled water
several times before proceeding with testing.
5.5
After using the electrode, first put back
the cap then
screw
the bottle into place tightly to prevent leakage.
PRECAUTION ON USE
!
Do not touch or scratch the pH glass sensor. It is fragile and delicate.
Do not clean sensor with alcohol.
Never use distilled water for storage.
Store the electrode in the storage solution.
Always rinse the electrode with distilled water before and after each test.
