Patent ID: 6429778
Filing Date: 2002-08-06
Classification: G01F,G01N

Abstract:
A water-monitoring apparatus comprising:a frame (19) being installed by water; a reel (10) being mounted on the frame (19); a cable (15) being wound on the reel (10) and including a lower end and an upper end; a buoy (30) being connected with the cable (15); a control device being connected with the reel (10) wherein when the water level changes, the control device rotates the reel (10) so as to adjust a length of the cable (15) extending from the reel (10) for allowing the buoy (30) to just float on the water surface; a detecting device being carried via the buoy (30) and electrically connected with the lower end of the cable (15) for detecting at least one environmental characteristic and for producing at least one signal representative of the at least one environmental characteristic; and a signal relay (20) being electrically connected between the detecting device and a monitoring station.