Turbidity level detecting apparatus

Abstract

PURPOSE:To eliminate erroneous operation caused by floating substances in a precipitation tank and to enable the detection of the rising speed of a turbidity layer, by arranging two pairs of optical turbidity sensors different in height and horizontal directions in the precipitation layers. CONSTITUTION:Turbidity sensors A, B each consisting of a light emitter 1 and a light receiver 2 at a position different in height and horizontal directions within the precipitation layer in a precipitation tank 10. Because the height of the arrangement is different, the rising speed of a turbidity level is known from a time required in the arrival of a torbidity layer to upper sensors B from the detection of the boundary layer of a turbidity layer and a clear layer by the lower sensors. In addition, because two turbidity sensors A, B different in height and horizontal directions are not simultaneously blocked from light by floating substances in the precipitation tank, erroneous operation caused by floating substances can be prevented.

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Cited By (5)

    Publication numberPublication dateAssigneeTitle
    JP-S63128447-UAugust 23, 1988
    JP-S63128448-UAugust 23, 1988
    JP-S63256182-AOctober 24, 1988Tsurumi Mfg Co LtdMethod and apparatus for controlling effluence of supernatant water in sewage treatment chamber
    US-6669838-B1December 30, 2003Access Business Group International Llc.Apparatus for filtering and sterilizing water utilizing a turbidity and microorganism sensing system
    WO-9419674-A1September 01, 1994British Nuclear Fuels PlcMesure des proprietes d'une boue