Abstract: The present invention relates to an automatic seepage meter for measuring groundwater-surface water exchange in a mixed zone of stream. The present invention includes: the chamber installed in streambed sediment; the device for measuring amount of groundwater recharge through a change in water level accompanied by discharging water in the water in case of losing stream; and the device for measuring amount of groundwater discharge through a change in water level according to an increased water from the chamber to the water bath for measuring discharge in case of gaining stream.

Abstract: A salometer and flow rate sensor assembly for a water softener system including a brine tank containing a brine solution including at least one sensor housing provided in the brine tank, a first detector set associated with the housing and configured for indicating whether the brine solution is adequately concentrated and a second detector set associated with the housing and configured for measuring the brine solution flow rate during brine draw and refill cycles of regeneration.

Abstract: A fluid flow tester for measuring minute volumes of fluid and for calibrating medical devices, such as intravenous infusion pumps, includes a plurality of valves and associated conduits which direct fluid from the device being tested to a transparent vertical column. A plurality of sensors, each including a light emitting diode and a light detector, are arranged along the axial length of the column at a predetermined spacing between adjacent sensors. Fluid from the device being tested is directed through the flow tester by the valves and associated conduits into the column where it rises. The meniscus of the fluid rising in the column is detected by the sensors. The sensors provide signals to a microcontroller which calculates the time that it takes for the fluid to pass each sensor. Knowing this timing and the volume of the column, the flow rate of the fluid may be calculated by the microcontroller.

Abstract: A volumetric liquid metering device has a meter chamber for receiving up to a predetermined volume of liquid, an inlet conduit for directing liquid into the meter chamber, a volumetric meter to indicate when the predetermined volume has entered, and a discharge conduit operable in response to a signal from the volumetric meter. The device can have a pair of coupled meter chambers, one b being filled as the other discharges. Valves control ingress and egress of liquid from the meter chambers, and alternate between chambers in response to a signal from the volumetric meter.

Abstract: A volumetric liquid metering device comprising a meter chamber (50) for receiving up to and including a predetermined volume of, liquid, an inlet conduit (46) for directing liquid into the meter chamber, a volumetric metering means (58) to indicate when the predetermined volume of liquid has entered the meter chamber, and a discharge conduit (64) for discharging liquid from the meter chamber in response to a signal from the volumetric metering means. It is preferable that the device comprise a pair of coupled meter chambers, wherein one meter chamber is arranged to be filled with liquid whilst the other discharges liquid therefrom. Valves are provided to control ingress and egress of liquid from the meter chambers, which alternate between chambers in response to a signal from the volumetric metering means.

Abstract: The container includes a first chamber connected to the liquid source through an inlet port of a given cross-sectional area and a second chamber connected to a drain through an outlet port of at least equal size. The chambers are separated by a partition having a slot which has an elongated portion extending from the container floor in a direction generally parallel to the container side walls. The area of the elongated slot portion is approximately equal to the area of the inlet port. Liquid level or weight sensors generate signals representative of the quantity of the liquid level in the first chamber to a microprocessor to measure the flow rate. The signals are integrated over time to measure the total volume.

Abstract: Method and apparatus for continuous measurement of liquid flow velocity, where there are positioned risers between respective line light sources and where between the risers there is positioned at least one CCD image sensor. The risers are joined together at one end thereof and are connected with the surroundings via a valve. At the other end, the risers are connected with a liquid stream supply line via three-way valves. The three-way valves are joined together via a return outlet with the return line for the liquid stream.

Abstract: A liquid drainage system is disclosed comprising a combination urine meter element and drainage receptacle, the urine meter element having front and rear walls defining a chamber adapted to receive and measure urine output.

Abstract: The invention includes a device for measuring a quantity of liquid extracted from a dialysis liquid circuit, the device having a reservoir means connected to the dialysis liquid circuit for receiving liquid from the dialysis liquid circuit, at least one measurement container for receiving liquid from the reservoir, a flow channel connecting the reservoir with the at least one measurement container for selectively filling the measurement container with liquid from the reservoir, a level detector disposed proximate a predetermined area on the at least one measurement container for detecting the presence of liquid at a predetermined level, and a drain port on the measurement container for receiving a signal from the level detector to empty the contents of the measurement container after the presence of liquid at the predetermined level is detected.

Abstract: A device for determining a flow rate of liquid discharged from a plurality of discharges comprising a plurality of collectors for the discharged liquid connected by a manifold having a plurality of inlet lines attached to the discharges and a single outlet line; a receptacle having at least a first and a second compartment, each of which has a predetermined fixed volume adapted to hold the liquid and each having a volume indicator associated with at least one liquid level in each of the compartments; a connector for the outlet line of the manifold to the receptacle and an attachment for selectively directing the liquid from the outlet line into each of the compartments.

Abstract: A device to digitally meter, monitor and collect liquid, such as urine, from a catheterized patient. As such it is the successor to and improvement upon U.S. Pat. No. 3,769,497. An optional part prevents the migration of bacteria from the monitoring and collecting devices to the patient's body cavity. The device comprises a plurality of uniquely shaped movable containers that empty their contents when filled to a predetermined volume, a catheter for delivering liquid to the containers, movement sensors for detecting container movement to determine the amount of fluid collected, patient isolating means for electrically isolating the sensors from the patient while delivering movement signals to the sensors, a final collection container for receiving liquid from the movable containers, supports for supporting the device, and controls and alarms for indicating an alarm condition.

Abstract: A urine receptor comprising, a receptacle having a chamber to receive urine, and a valve assembly attached to a lower portion of the receptacle. The valve assembly is normally closed, and permits passage of urine through the valve assembly when a valve element of the assembly is pressed.

Abstract: A urine meter comprising, a container having a cavity for collection of urine, and a drainage tube for draining urine from a patient. The meter has a receptacle having a chamber, with the drainage tube defining a port communicating with an upper portion of the receptacle for passage of urine into the chamber. The receptacle has a baffle extending across an upper portion of the receptacle below the drainage tube port and defining opening means permitting passage of urine from the drainage tube port into the chamber. The meter communicates between an upper portion of the receptacle and an upper portion of the container to permit passage of urine from the chamber to the cavity by tilting the receptacle while the baffle prevents passage of urine into the drainage tube.

Abstract: A urine meter bag for accurately measuring and storing urine passing from a patient including a meter for receiving the urine flow having a large measuring chamber and a smaller calibrated chamber into which the flow initially passes. Upon filling of the calibrated chamber, overflow passes into the large chamber. The meter rests in tandem against a flexible drainage bag and is in fluid communication therewith near the top so that the meter can be tipped and its contents emptied into the bag. A special support assembly pivoted on the bag hanging bracket includes slotted side arms which straddle the meter and receive pivot pins on the meter which facilitate support and emptying of the meter into the bag.

Abstract: A urine meter comprising, a container having a cavity for collection of urine, and a receptacle having a chamber to receive urine and being closed to the atmosphere in the receptacle. The meter communicates between an upper portion of the receptacle and an upper portion of the container, with a first channel for the passage of urine from the receptacle to the container and a second channel for the passage of air from the container to the receptacle.

Abstract: A drainage monitor including a collector and a control unit. The collector has a lower, storage section made up of elongated parallel vertical chambers, a liquid manifold section above the chambers with a plurality of taps aligned with the chambers, and collapsible conduits connecting the taps with the chambers. The control unit includes an arrangement for supporting the collector, chamber valving apparatus aligned with the conduits and operable to compress them so as to prevent liquid flow, releasable solenoid-and-latch apparatus for preventing operation of the valving apparatus, and electrical timing circuitry for releasing the releasable apparatus in a predetermined sequence.

Abstract: A serial release mechanism, and a discharge monitor including the mechanism, which mechanism includes first and subsequent actuators slidable in a frame between working and withdrawn positions, springs urging the subsequent actuators into their working positions, latch tabs carried by the subsequent actuators and triggers resiliently pivoted to the frame for releasably retaining the subsequent actuators in their withdrawn positions, a shaft of noncircular cross section and a plurality of saddles for releasing the triggers of the subsequent actuators and having operating fingers and being rotatable with the shaft and slidable therealong between first positions in which they are aligned with the triggers and second positions in which they are not so aligned, saddle springs resiliently urging the saddles along the shaft into their second positions, and shifter springs carried by the actuators and the frame, and effective when any actuator is in working position to displace the succeeding saddle into its first po

Abstract: An apparatus for and method of recovering silver from liquid solution containing silver, the apparatus comprising an ionic exchange chamber wherein a sludge containing silver is precipitated from the solution, the apparatus further comprising a device to measure the flow of solution through the chamber and to obtain a representative sample from the solution displaced therethrough. In accordance with one aspect of the invention, the metering and sampling are accomplished in a single unit. It is preferred that the metering and sampling unit be situated to receive solution prior to its entry into the precipitation chamber, although the effluent solution leaving the chamber may be metered and sampled as well. The metering and sampling device illustrated comprises a tilting tray pivotally disposed in a metering chamber. Upon each oscillation of the tray, a known amount of solution is thus caused to be discharged from the compartments of the tray.

Abstract: Control apparatus is provided responsive to liquid flow which has in the suction line of the pump a float operated magnetically actuated switch in which the float is moved to one position by the presence of liquid attendant on flow and moves to another position upon cessation of flow with provisions including an expansible chamber for impelling the float to the other position either by delivering gas or air to the float chamber or by positively moving the float to the other position. The apparatus is particularly suitable for use in closed systems utilizing supply containers which are collapsed as the liquid is withdrawn.

Abstract: A continuous weighing mechanism, which contains a fluid receiver mounted upon a rocker shaft, said receiver and a portion of said rocker shaft contained within a housing which is supported by a frame, and a fluid flow indicating device, for use with a conduit system wherein a fluid material is moved and is weighed by said mechanism, said device comprising (a) a magnet which is adapted to be detachably connected to said rocker shaft on that portion thereof which is outside said housing; (b) an electromechanical switch which is adapted to be mounted on said frame, said switch being in electromagnetic relationship with said magnet so that movement of said magnet can activate said switch; (c) a control module containing input and output circuits, disposed remotely from said switch and interconnected therewith by suitable electrically conductive means, said control module adapted to receive a signal from said switch through said input circuit and upon preset circuitry conditions, activate an outside electrical pow

Abstract: A urine metering and collection system is disclosed which includes a relatively stiff integral head member having a volume calibrated chamber with sidewalls continuously converging downwardly towards each other such that each horizontal section of the chamber has a smaller volume per unit of height than does the next adjacent upper horizontal section throughout a major portion of the length of the chamber, an outlet passageway adjacent the bottom of the chamber, an inlet passageway adjacent the top of the chamber, an overflow passageway having one end in fluid-flow communication with the top of the chamber and an air vent communicating with the chamber; a collection bag fixedly secured to the head member below the chamber and in flow communication with the outlet overflow passageway, which also serves as a vent for the bag, and including an opening and a drain tube; and conduit means for placing the chamber outlet passageway and the collection bag opening in flow communication, the conduit means preferably ha

Abstract: A measuring cylinder into which liquid is supplied is provided with pressure transmitters for sensing the liquid pressure corresponding to the amount thereof. The pressure transmitters are connected with a pressure transformer to transform the pressure into an electric signal for controlling valves to stop and start the supply of liquid into the cylinder. The pressure transmitters are located in the cylinder at different levels and switched to be selectively operated in combination with the pressure transformer. In a preferred embodiment of the invention, the shape of the cylinder is designed so that the diameter thereof increases discretely from the lower part to the upper part thereof. One of the pressure transmitters is located at the bottom of the cylinder and the others are located at levels substantially the same as those at which the diameter of the cylinder increases.

Abstract: A urine metering and collection system is disclosed which includes a relatively stiff integral head member having a volume calibrated chamber with sidewalls continuously converging downwardly towards each other such that each horizontal section of the chamber has a smaller volume per unit of height than does the next adjacent upper horizontal section throughout a major portion of the length of the chamber, an outlet passageway adjacent the bottom of the chamber; an inlet passageway adjacent the top of the chamber, an overflow passageway having one end in fluid-flow communication with the top of the chamber and an air vent communicating with the chamber; a collection bag fixedly secured to the head member below the chamber and in flow communication with the outlet overflow passageway, which also serves as a vent for the bag, and including an opening and a drain tube; and conduit means for placing the chamber outlet passageway and the collection bag opening in flow communication, the conduit means preferably ha

Abstract: A rain gauge comprising a counter and a pivoted bi-stable receiver having two compartments and which is adapted to pivot between first and second limit positions. A collector operates to collect the rainwater and directs it into one or the other of the compartments depending upon where the receiver is positioned. When the operative receiver compartment accumulates a predetermined amount of water, for example water representative of one-tenth of an inch of rainfall, it pivots to the other limit position, placing the other compartment in the operative position, dumping the contents of the first compartment and actuating a counter which registers the increment of rainfall. The actuation of the counter is accomplished by applying an electrical pulse to the counter, the pulse being generated by the pivotal movement of the receiver.