AUTOMATIC MEASURING DEVICE FOR UPLIFT PRESSURE OF CONCRETE DAM OUTLET

摘要

PROBLEM TO BE SOLVED: To automatically measure uplift pressure by opening and closing an optional outlet valve by use of an electric motor valve by the remote control by a switch on the outside of an inspection gallery. ;SOLUTION: A control board 1 and an automatic recording device (data logger) 2 are set within a management house or an inspection gallery inlet part, and a cable is extended into the inspection gallery and connected to a multipoint automatic switch (scanner) 3. An electric motor valve 5 is mounted on each drain hole of an electric pressure converter 4 to which the scanner 3 is connected, and the control board 1 is connected to the valve 5 by a cable. An optional valve 5 is remotely controlled by a timer switch provided within the control board 1 to open and close the outlet, and the uplift pressure is automatically measured by the data logger 2.;COPYRIGHT: (C)1998,JPO