TURTLE
TOUGH
®
13
Storage of the Sensor
When a sensor is not being used for a longer period of time, it is recommended
to store it in water, where it should be immersed up to the beginning of the cable.
This prevents evaporation of the electrolyte and guards against loss of membrane
elasticity.
Note:
The sensor must never be stored in a so-called zero solution! This would damage
the electrode and void the warranty.
Refilling of Electrolyte
If a measuring instrument has been stored over a longer period without
being kept in water, or if it is exposed to high temperatures during summer, it is
possible for part of the electrolyte to evaporate. This would, to some extent,
impair the functioning of the automatic pressure compensation.
The electrolyte level can be verified by holding the sensor horizontally. You
should now be able to see an air bubble no larger than 4 mm in the centre of
the pressure-compensation membrane. Should refilling of the electrolyte be
required, it is carried out as follows:
1. Unscrew the side pressure membrane ring nut with the Pressure Compensator
Tool TT-TOUGH-DO-SWT or a set of Circlip pliers. Remove the o-rings and
side membrane. (For a complete exchange, shake out the old electrolyte,
taking care not to knock against anything with the sensor.)
2. Hold the sensor slightly at an angle and fill up with new electrolyte. Gently
tapping against the sensor body helps to release trapped air bubbles.
3. Replace the membranes and o-rings back in position and screw in the ring
nut. Use a small cloth or tissue-paper for wiping off any electrolyte spilt
during fastening of the ring nut.
Note:
If the electrolyte comes into contact with your skin, rinse the affected part
immediately under running water.
