Subject to change · V 2.02.20 · EN
Page 12
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5. About this product
5.1 Functional description
The OPCom Particle Monitor is an optical particle monitor operating on the principle of light extinction.
A
C
B
Fig. 3: Design and measuring principle of a particle monitor
It consists of a flowed measuring cell (A), a laser (B) and a photo diode (C).
The laser beams through the measuring cell to the opposite photo diode. If a particle passes through the laser beam, the light
intensity detected by the photo diode is reduced. The larger the particle, the greater the reduction in intensity.
The OPCom Particle Monitor allows users to monitor the contamination level and the trend regarding cleanliness of fluids. Differen-
ces in absolute precision may arise compared to particle counters calibrated according to ISO 11171:99. However, the deviation is
less than one scale number. Changes are shown with great precision.
Continuous monitoring of the cleanliness allows changes in the machine to be detected very quickly. Prompt warning allows
measures to be taken before the contamination increases to the point of damaging the entire system.
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