| 摘要 |
PCT No. PCT/GB89/01522 Sec. 371 Date Jun. 24, 1991 Sec. 102(e) Date Jun. 24, 1991 PCT Filed Dec. 20, 1989 PCT Pub. No. WO90/07710 PCT Pub. Date Jul. 12, 1990.The build-up of the deposits on surfaces immersed in water in monitored by passing the water through a galvanic cell comprising a pair of dissimilar metal electrodes (5, 6) mounted on opposite sides of a passage (4) for the water in a housing (1,7), and detecting and interpreting galvanic current developed between the electrodes (5, 6).
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