PROCEDURE MEASURING OPTICAL CHARACTERISTICS OF TURBIDITY OF MEDIA Russian patent published in 2002 - IPC

FIELD: measurement technology, measurement of optical characteristics of turbid media under conditions of background radiation in particular. SUBSTANCE: invention can find use in devices intended for study and control over surrounding air, aqueous and other turbid media. Procedure measuring optical characteristics of turbidity of media includes formation of directed beam from radiation flux, its division into reference and measuring beams, alternate transition of them through turbid medium with period T, convergence of passed beams in common beam, reception and conversion of passed beams into electric signal from which signal proportional to measured value of optical characteristic of turbidity of medium is extracted. Length of pulses of reference and measuring radiation beams is chosen from relation 0<τ_rb+τ_mb<T, where τ_rb and τ_mb are length of pulses corresponding to reference and measuring radiation beams. After conversion of passed beams to electric signal its component proportional to background radiation is isolated, is reduced to zero potential and pulse component of electric signal is divided into two sequences of pulses one of which corresponds to reference and another one corresponds to measuring radiation pulses. Both pulse sequences are converted to constant voltages and values of optical characteristics of turbid medium are computed. Obtained values of constant voltage corresponding to mentioned pulse sequences are converted to digital signal entered into computer which computes optical characteristics of turbidity of medium with the aid of proper software. EFFECT: substantially increased accuracy of measurement of optical characteristics of turbidity of media. 1 cl, 1 dwg