CHEMOTRONIC III
47
12.2.
Photocell cleaning procedure
For cleaning of photocell system it is not necessary to dismantle the instrument. By
means of the cleaning brush and solvent (Isopropanol Alcohol) supplied with the
instrument, direct cleaning is possible in a few minutes.
a)
Check the light transmission value according to the previous chapter.
b)
Wet the cleaning brush with some solvent, insert it and move it up and down-
wards to clean of the photosensitive areas in the test tube cylinder.
c)
Insert a clean glass test tube filled with clear water or solvent into the
instrument and check the intensity of the photocell again. The measured
value should be over 300 units. If not, please repeat the cleaning procedure.
d)
Re-calibrate the turbidity measurement according to the calibration
instructions as described in the chapter 6.2.
Note:
As a precautionary measure, the cleaning may be done on a day by day basis
in order to prevent that dust and dirt will stick on the sensitive tip of the
optical glass fibres and might burn-in during the use of the instrument.
Photosensitive Areas
Fig.: 7.5
Summary of Contents for HEMOTRONIC III
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