User manual
PONSEL
Reference: NOTICE_ACTEON_2010_v001-UK
V: 001
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13.1.4 Maintenance
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After use, rinse the electrode in demineralised water.
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Place the protective casing back on the sensor after having checked that the casing contains several
drops of storage solution or, failing that, saturated KCL solution.
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The glass bulb of the electrode is very fragile, therefore extreme care must be taken when cleaning the
sensor (especially when the polyethylene strainer is removed).
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Make sure that the connections of the pH sensor remain clean and dry in order to maintain the electric
insulation which is vital to the good working order of the sensor.
Do not store the pH sensor in the protective casing filled with (especially very pure) water for long
periods of time.
The reserve of Plastogel KCl salt, whilst of considerable size, may deplete and be used up
prematurely if the salt is diffused in water with a low ionic strength.
If there is no storage solution, which is ideal for this use, or saturated KCl solution (several drops
are sufficient in both cases), it is possible to make do with slightly moistening the inside of the
protective casing before storage so as to maintain an atmosphere conducive to hydration of the
glass pH bulb.
In such a case, the sensor can be stored for unlimited periods and also be ready for use.
The pH sensor must never be allowed to dry.
13.1.5 Cleaning
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One rinse in demineralised water is sufficient, in general.
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In case of heavy soiling, immerse the sensor for one hour in a pH cleaning solution ( HCl).
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Take care not to damage the plasticized electrolyte contact zone located immediately behind the glass
pH bulb.
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Using Vaseline, grease the ring-type joints on the delrin shaft from time to time. This eases sliding of
the casing and improves storage leak-tightness.
13.2 The temperature sensor
Stainless steel sensor with DELRIN shaft.
Working temperature:
-20 to 55°C
Pressure:
Max. 5 bars.
Cable:
stranded.
