| 摘要 |
The activity of fish or other aquatic animals used to monitor the purity of a supply of water is detected by sensing the electric potentials generated by respiration or heart beat using silver and silver chloride sintered electrodes encapsulated in a flat insulating cover 46. The water is continuously monitored by dividing the supply into a number of parallel streams and flowing each through a tank 14a containing a fish (or other aquatic animal), the health of each fish being monitored by electrodes in each respective tank. The fish tanks are located together in a main tank (12, Fig. 1) and the water supply is drawn from a header tank (16) via pipework (24), the tank (16) being fed from a supply (18). <IMAGE> |
