| 摘要 |
PCT No. PCT/GB93/01555 Sec. 371 Date Jan. 24, 1995 Sec. 102(e) Date Jan. 24, 1995 PCT Filed Jul. 23, 1993 PCT Pub. No. WO94/02836 PCT Pub. Date Feb. 3, 1994An 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. |
