Abstract: The invention discloses a loss detection system to determine and monitor containment losses for open channel networks. One exemplary method comprises monitoring a flow of liquid from an open channel into a pool, the open channel comprising channel banks and a bed, controlling the flow of liquid such that a level of liquid within the pool is constant, and determining theft loss of liquid based on the monitored flow of liquid.

Abstract: The invention discloses a loss detection system to determine and monitor containment losses for open channel networks. One exemplary method comprises monitoring a flow of liquid from an open channel into a pool, the open channel comprising channel banks and a bed, controlling the flow of liquid such that a level of liquid within the pool is constant, and determining theft loss of liquid based on the monitored flow of liquid.

Abstract: The invention provides a level detection device (32) having a tube (34) which, in use, contains a material (14) for which its level in the tube (34) is to be measured. An ultrasonic transducer (10) is provided at one end of tube (34) for emitting an acoustic waveform that reflects off the surface of the level and returns to the ultrasonic transducer (10) to allow computation of the level from the time periods of the emitted and reflected acoustic waveforms. A flared section (22) within tube (34) diverges from adjacent ultrasonic transducer (10) towards the inside wall of tube (34) above the level, whereby, in use, the measured reflected waveform has substantially reduced signal distortion due to flare (22).

Abstract: The invention discloses a loss detection system to determine and monitor containment losses for open channel networks (10). The system includes at least first and second flow regulators (26, 28) to allow flow of liquid into and out of at least one pool (10) respectively. First and second flow sensors co-operate with respective flow regulators (26, 28) and a computational means communicates with flow regulators (26, 28) and the flow sensors to control operation of flow regulators (26, 28). The computational means determines the containment losses by calculating the measured flow into at least one pool (10) through at least first flow regulator (26) and subtracting the measured flow out of at least one pool (10) through at least second regulator (28).

Abstract: A control gate is adapted to be installed across a channel for liquids. The control gate has a barrier member capable of vertical or tilting movement and it is either slidingly or pivotally mounted to a frame of the control gate. In one instance, the control gate has at least one side member attached to the barrier member. A drive member co-operates with the side member(s) to allow raising and lowering of the barrier member to regulate flow of liquid through the control gate. The drive member includes a spool and an engagement member that is secured under tension and winds around the spool. As the spool turns it causes, with the engagement member, movement of the barrier member. Also described is a method of measuring flow rate through a control gate.

Abstract: A method and device for measuring flow rate of a liquid through a gate in a channel. The device having a first pressure sensor for measuring the pressure of the liquid at a first position upstream of the gate. A second pressure sensor for measuring the pressure of the liquid at a second position downstream of the gate. An opening sensor for measuring the position of opening of the gate and a processor for calculating the flow rate using an algorithm based on the measurements.

Abstract: A control gate is adapted to be installed across a channel for liquids. The control gate has a barrier member capable of vertical or tilting movement and it is either slidingly or pivotally mounted to a frame of the control gate. In one instance, the control gate has at least one side member attached to the barrier member. A drive member co-operates with the side member(s) to allow raising and lowering of the barrier member to regulate flow of liquid through the control gate. The drive member includes a spool and an engagement member that is secured under tension and winds around the spool. As the spool turns it causes, with the engagement member, movement of the barrier member. Also described is a method of measuring flow rate through a control gate.

Abstract: The invention discloses a loss detection system to determine and monitor containment losses for open channel networks (10). The system includes at least first and second flow regulators (26, 28) to allow flow of liquid into and out of at least one pool (10) respectively. First and second flow sensors co-operate with respective flow regulators (26, 28) and a computational means communicates with flow regulators (26, 28) and the flow sensors to control operation of flow regulators (26, 28). The computational means determines the containment losses by calculating the measured flow into at least one pool (10) through at least first flow regulator (26) and subtracting the measured flow out of at least one pool (10) through at least second regulator (28).

Abstract: A control gate is adapted to be installed across a channel for liquids. The Control gate has a barrier member capable of vertical or tilting movement and it is either slidingly or pivotally mounted to a frame of the control gate. In one instance, the control gate has at least one side member attached to the barrier member. A drive member co-operates with the side member(s) to allow raising and lowering of the barrier member to regulate flow of liquid through the control gate. The drive member includes a spool and an engagement member that is secured under tension and winds around the spool. As the spool turns it causes, with the engagement member, movement of the barrier member. Also described is a method of measuring flow rate through a control gate.

Abstract: The invention discloses a method of predicting the fluid level at a predetermined location in a fluid flow network (10) having at least one regulator (16, 18) to control the flow of fluid along fluid flow network (10). The method includes the steps of collecting data based on timed measurements of fluid levels upstream (24, 28) of at least one regulator (16, 18), fluid levels downstream (26, 29) of at least one regulator (16, 18) and the opening position (30, 32) of at least one regulator (16, 18), and using data analysis (40) to provide a model based on the data whereby the model will provide prediction of fluid level at the predetermined location based on timed measurements of fluid levels upstream (24, 28) of at least one regulator (16, 18) and the opening position (30, 32) of at least one regulator (16, 18).

Abstract: A control gate is adapted to be installed across a channel for liquids. The Control gate has a barrier member capable of vertical or tilting movement and it is either slidingly or pivotally mounted to a frame of the control gate. In one instance, the control gate has at least one side member attached to the barrier member. A drive member co-operates with the side member(s) to allow raising and lowering of the barrier member to regulate flow of liquid through the control gate. A flow control member allow the liquid to flow over the gate substantially parallel to the floor of the channel. Also described is a method of measuring flow rate through a control gate.