| 摘要 |
A detector assembly for measuring and monitoring quantities of particulate matter suspended in a fluid stream which is structured for injection of a flushing fluid therein. The assembly comprises a fluid sampling enclosure having electrically conductive plates which form cavities at either end of the enclosure and a conduit between these plates for passing the fluid stream. Flushing fluid is injected in the cavities, which fluid passes into the fluid stream through holes in the plates thereby maintaining the plates clean. A bridge circuit in which the plates and the fluid stream constitute an arm of the bridge is used for monitoring and measuring the change in resistance between the plates due to dissolved ions in the fluid stream, or dissolved solids therein.
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