Abstract

The development of a contact and a non-contact sensor to measure low turbidity of potable water using fluorescent optical fibres over the range 0 to 1 FTU is presented. The contact sensor had a sensitivity of 3.3 nW I unit FTU and an accuracy of ± 0.1 to 0. 15 FTU. The non-contact version of the sensor had a sensitivity of 1.17 nW/ unit FTU.

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