beautypg.com

Ph/orp sensor top view – Myron L PS6 User Manual

Page 32

background image

28

D. Cleaning Sensors

1. Conductivity/TDS/MIN

/

SALT

The conductivity cell cup should be kept as clean as possible. Flushing

with clean water following use will prevent buildup on electrodes.

However, if very dirty samples — particularly scaling types — are

allowed to dry in the cell cup, a film will form. This film reduces accuracy.

When there are visible films of oil, dirt, or scale in the cell cup or on the

electrodes, use isopropyl alcohol or a foaming non-abrasive household

cleaner. Rinse out the cleaner and your P

ool

P

ro

is ready for accurate

measurements.

2. pH/ORP

The unique pH/ORP sensor in your P

ool

P

ro

is a nonrefillable

combination type that features a porous liquid junction. It should not be

allowed to dry out. If it does, the sensor may sometimes be rejuvenated

by first cleaning the sensor well with Isopropyl alcohol or a liquid spray

cleaner such as Windex™ or Fantastic™ and rinsing well. Do not scrub or

wipe the pH/ORP sensor.

Then use one of the following methods:

1.

Pour a HOT salt solution ~60°C/140°F, preferably potassium

chloride (KCI) solution (Myron L pH/ORP Sensor Storage

Solution) — HOT tap water with table salt (NaCl) will work fine

— in the sensor well and allow to cool. Retest.

or

2.

Pour DI water in the sensor well and allow to stand for no more

than 4 hours (longer can deplete the reference solution

and damage the glass bulb). Retest.

If neither method is successful, the sensor must be replaced.

pH/ORP SENSOR

Top View

ORP

Electrode

pH Glass

Electrode

Sensor

Body

Reference

Junction

under Glass

pH Bulb