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AssigneeBritish Technology Group Limited
InventorsRonald Briggs, Kenneth T. V. Grattan, Zoheir Movaziz
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An apparatus for measuring the concentration of a contaminant in a fluid includes a measuring chamber in a fluid path, a first source of optical radiation of a predetermined wavelength adapted to direct the radiation through the measuring chamber, and a detector for detecting the radiation after passage through the measuring chamber. The fluid path also has a pump provided to urge a test fluid from a fluid source to the measuring chamber, the test fluid being subjected to containing the contaminant, a fluid processor to process the fluid to change an optical effect of the contaminant, an acid wash to inhibit the effect of precipitation of cations within the fluid path, a fluid bypass to bypass the fluid processor and a valve to alternately direct the fluid to the fluid processor and the bypass.
Apparatus for measuring a concentration of a contaminant in a fluid, comprising;
Apparatus for measuring the concentration of a contaminant in a fluid according to any one of the preceding claims, wherein said detector means includes filter means for spreading detected optical noise over a larger bandwidth, thereby reducing a noise spectrum per unit bandwidth.
Dependencies are inferred from the claim text.