Abstract: A system and method for detecting phase separation in storage tanks is provided. At least one float has a density calibrated to detect a density differential among surrounding fluids. The float is buoyant on a relatively more dense lower layer of fluid such as phase separated fuel or pure water, while remaining submerged in a relatively less dense upper layer of fluid such as a gasoline/ethanol blend. A detection device sends a signal when the float rises or falls above or below a preset acceptable level.

Abstract: A device for measuring the fill level in a liquid container has a fill level sensor secured in the liquid container. According to the invention the fill level sensor is supported in pendulum-like fashion on the liquid container about at least one rotary axis.

Abstract: In order to detect the position of a piston, e.g. in a piston accumulator, without a run out of electrical cables etc. from the pressure loaded cylinder, the mechanical portion of the band sensor is disposed in the interior of the piston accumulator and a magnet driven in rotation by the winding drum is scanned contactless through a magnetically permeable wall portion from the outside through an angle sensor with respect to a rotation position of the magnet.

Abstract: The present invention provides the fuel indication gauge that uses the materials of contact point and electrode conductor that have the strong corrosion, fuel resistance and chemical resistance. Especially, it provides the fuel quantity gauge that satisfies the requirements of various kinds of fuels in the world including poor quality of fuels and fuels that customers of vehicle manufacture companies require a test.

Abstract: A grounding arrangement for an in-tank fuel system includes a fuel level sensor assembly of a fuel module comprising a conductive card body and a resister card supported on the conductive card body. The resister card includes a conductive trace in conductive contact with the conductive card body. The card body is conductively connected to a conductive fuel module component. The trace is adapted to be connected to the ground plane of a vehicle. Other traces on the resister card are in the electrical circuit of the fuel level sensor assembly. The fuel module further includes a conductive blade having a knife edge and in conductive contact with a conductive fuel module component. The knife edge cuts through the insulation of an insulated conductor to allow the knife edge to be in contact with the conductive element of the conductor.

Abstract: A water jet propulsion watercraft includes a hull, an engine disposed inside the hull, a jet propulsion device arranged to be driven by a driving force of the engine, a water detection unit arranged to detect whether or not the hull is immersed in water, and a control unit arranged to restrict an engine rotational speed. The jet propulsion device is arranged to jet water rearward from a jet port to thereby apply a propulsive force to the hull. The water detection unit includes a water detection chamber arranged such that water around the hull is introduced when the hull is in water, and a water level sensor arranged to detect a water level inside the water detection chamber.

Abstract: The invention discloses a low liquid level detecting device comprising a float sensor and a casing. The casing has first to third chambers formed between an upper wall and a bottom wall. The top portion of the first chamber is formed with a top opening. The bottom portion of the first chamber is fluid communicated with the bottom portion of the second chamber. The top portion of the second chamber is fluid communicated with the top portion of the third chamber. The bottom portion of the third chamber is formed with a bottom opening. A float sensor is mounted inside the third chamber. A drain hole is formed through the bottom part of a chamber wall surrounding the third chamber. A method for detecting a low liquid level using the above low liquid level detecting device is also disclosed.

Abstract: Apparatus and method are provided for accurately measuring the volumetric or mass fluid flow, especially when fluid flows in a non-continuous manner using a float. A preferred embodiment comprises a tube for accumulating liquid that is periodically drained and a float confirmed within the tube that floats on the accumulating liquid. The float has magnetic properties that can be sensed so as to measure the position of the float in the tube. A controller controls a valve provided in the bottom of the tube and opens the valve so as to allow drainage of the accumulated liquid according to the positioning of the float within the tube. The valve is opened when the position of the float is in a predetermined position within the tube so that the mass or volume of the drained liquid is known.

Abstract: An insulation beverage container (10) is provided and includes a gauge (40) for indicating the level of beverage held in the container (10). The gauge (40) includes a float (42) positioned within the container (10), a visual indicator (44) extending outside of the container (10), and a link (46) connecting the float (42) to the indicator (44) to move the indicator (44) with the float (42) as the position of the float (42) varies with the level of the beverage in the container (10).

Abstract: The invention provides a method for the protection of internal filters of a LTFT slurry bubble reactor. The method includes the step of activating an emergency back-flush procedure during low slurry level conditions and/or during increasing temperature of an internal filter.

Abstract: A liquid level detection apparatus of the present invention includes contacts provided at a distal end portion of a contact plate, and resistance plates which are formed on a wiring board, and have respective conductor portions over which the contacts can slide, respectively, so as to detect a liquid level. Conductor patterns other than the conductor portions are formed on those regions of the wiring board which the contacts at the distal end portion of the contact plate contact during the time when an arm holder is mounted on the wiring board.

Abstract: An oil level detection apparatus having a float-type oil level detector (50) and a mode switching unit. The oil level detector emits a signal indicating that the oil level has dropped when a movable contact disposed on a float (54) makes contact with fixed contacts once the level of said oil (Lu) has dropped to a lower limit level. The mode switching unit switches between one of two modes selected from a first mode for actuating the alarm and stopping the engine (10) in accordance with the level drop signal, and a second mode for actuating the alarm and continuing to operate the engine (10) in accordance with the level drop signal.

Abstract: A float-type oil-level detection apparatus is provided for detecting the surface of engine oil. A housing (81) for housing a float (82) has a through-hole (136) in the sidewall of the side opposite from the sidewall that faces the movement of the oil dipper (69).

Abstract: A filling level sensor having a lever arm which has a float at one end and is held at its other end by a clip. A resistance network is arranged on a substrate and to which a contact structure is assigned, the resistance network producing an electrical signal for the filling level as a function of the pivoted position of a lever arm. The clip is composed of an electrically conductive plastic and has an electrical contact connected to the clip in an electrically conductive way, such that as the lever arm pivots said contact describes a circular path on the substrate. The area on the substrate over which the electrical contact passes is an electrically conductive contact face and is electrically conductively connected to a connecting line of the filling level sensor.

Abstract: An air conditioning system condensate collection pan or water leak containment pan electrical control switch includes a housing or frame for supporting a switch unit which includes an elongated actuator arm. The housing includes a slot disposed adjacent a distal end of the actuator arm for receiving a water soluble tablet engageable with the actuator arm to bias the arm into a predetermined position of the switch. Abnormal accumulation of condensate or leaking water dissolves the tablet and allows the actuator arm to move to a position to effect actuation of the switch. The switch may be connected to a control unit, a thermostat and/or to an alarm generator including a self-contained unit having battery powered audio and/or visual alarm devices, an on-off switch and a circuit test switch.

Abstract: A thermowell extends downwardly into tank liquids from the roof of the tank. A magnetostrictive wave guide probe is positioned on the inside of the thermowell and a magnetic float is slidably positioned on the outside of the thermowell. The probe is connected to a head unit containing the necessary electronics for operability which is positioned outside of the tank. The position of the float, and thus the liquid level, is remotely sensed by the probe, and the probe can be removed from the thermowell if necessary without breaking the seal of the tank.

Abstract: The invention relates to a level transmitter, having a lever arm which carries a float at one end and is received by a bracket at its other end, a support made of synthetic material, a bearing arranged on the support for the brackets and/or the lever arm, a level sensor arranged on the support and comprising a cover and a substrate, a resistor network arranged on this substrate and associated with a contact structure, with the electrical connection of the contact structure generating, with the resistor network and as a function of the pivotal position of a lever arm, an electrical signal indicating the level, and having at least one permanent magnet for actuating the contact structure. The bracket is made of an electrically conductive synthetic material and, at least in the region between the bearing and the cover, the support is made of an electrically conductive synthetic material.

Abstract: A liquid level measuring device includes an elongate handle and an elongate frame arranged in telescoping relationship. The frame is movable between a collapsed position for storage and an extended position for usage. A float is movable lengthwise along the elongate frame. A control rod extends lengthwise in the elongate frame and through a passage in the float. The control rod controls movement of the float relative to the elongate frame. An actuator actuates the control arm to move the float from the locked position to the unlocked position in response to a downward pressure between a lower end of the elongate frame and a bottom surface of the container so that the float is free to seek the liquid level in the container and to move the float from the unlocked position back to the locked position when the downward pressure is released.

Abstract: A variable resistor assembly is preferably adapted for use with a fuel level sensor and includes an arcuate resistive area including a plurality of radially oriented and spaced apart conductive contact segments, and further includes a wiper including an arm and at least two contactors carried by the arm, wherein the at least two contactors are arranged on the arm such that the at least two contactors make contact with one of the conductive contact segments before breaking contact with an adjacent one of the conductive contact segments. Preferably, the at least two contactors are laterally offset with respect to one another and/or oriented at an angle with respect to the conductive contact segments.

Abstract: A sealed fuel level sensor for a fuel tank is provided. The sealed fuel level sensor includes a frame having a cavity therein. The sealed fuel level sensor further includes a variable resistor disposed in the cavity and operatively supported by the frame. The sealed fuel level sensor further includes a wiper disposed in the cavity for rotation relative to the variable resistor and for contacting the variable resistor. The sealed fuel level sensor further includes a cover connected to the frame to enclose the cavity. The cover includes an aperture extending therethrough. The sealed fuel level sensor further includes a bushing disposed within the aperture. The bushing having a body portion and a lip seal portion disposed on the body portion. The lip seal portion and the body portion having a bore therein. The sealed fuel level sensor further includes a float arm having an end extending through the aperture of the cover and the bore of the bushing and connected to the wiper.

Abstract: In a liquid container used in an automatic analyzer, a float that makes it possible to prevent liquid from making contact with a liquid collection opening of the liquid container to form a film thereon is provided. A float is floated on the liquid surface of a reagent placed in a reagent container for use with an automatic analyzer. The float is equipped with a float body and a required number of buoyancy adjusters. The float body is equipped with a liquid surface cover that covers substantially the entire liquid surface, and a side wall portion positioned so as to project beneath the liquid surface from the liquid surface cover. The side wall portion constitutes a device for the purpose of suppressing swaying motions of the liquid surface cover by making contact with or engaging an inner wall of the reagent container when the reagent sways.

Abstract: A brake fluid reservoir for a braking system has a body and a fluid level detector. The body is hollow, single-piece molded and has a top, a bottom, two sides, a chamber, a fluid inlet and two fluid outlets. The chamber is defined in the body and has an inner surface. The fluid inlet is defined in the top and communicates with the chamber. The fluid outlets are defined respectively near the two sides in the bottom of the body and communicate with the chamber. The fluid level detector is mounted in the body and has two baffles to divide the chamber into two spaces communicating respectively with the fluid outlets. Because the body is single-piece molded, structural strength of the reservoir is enhanced.

Abstract: A method for monitoring a the contact resistance (Rs) of the wiper of a sensor for a variable quantity, with a potentiometer (2), in which the position of the center tap (3) determines the value of the quantity, is improved in such a way that, first, when the sensor is used in an automatic control circuit, no control deviations occur and, second, the contact resistance of the wiper can be monitored with precision. This is achieved by the cyclic switching-on of a load (RLast), so that the contact resistance (Rs) of the wiper can be determined on the basis of the change in the voltage divider ratio.

Abstract: A fuel level gauge is advantageously used in a fuel tank of an automobile. The fuel level gauge installed in a fuel tank includes a float floating on the fuel surface, a rotatable member supported by a stationary member and a detector such as a Hall element. The float is connected to the rotatable member through an arm member, and the rotatable member rotates according to positions of the float. Rotational positions of the rotatable member are detected by the detector. The arm member is electrically connected through a conducting member to a ground terminal to ground electrostatic charges that are generated by abrasion between the float and the fuel and accumulated in the arm member. The conducting member slidably connects the arm member to the ground member not to disturb smooth rotation of the rotatable member. Accuracy of the fuel level detection is maintained by grounding the electrostatic charges.

Abstract: Disclosed is a level sensor (7) for a fuel tank (1), comprising a holding part (11) that can be mounted in different positions on a support (13). The support (13) is fastened to a swirl pot (4) while the holding part (11) bears a lever arm (8) that supports a float (9). The inventive level sensor (7) can be adjusted to different fuel tank dimensions by mounting said level sensor (7) differently on the support (13).

Abstract: A fluid level switch for a machine having a fluid reservoir adapted to contain a fluid at an acceptable level. The fluid level switch includes a mounting plate, a float housing, and a float assembly positioned within the float housing. The mounting plate retains first and second contacts. The float housing is configured to receive fluid from the fluid reservoir and the float assembly is movable in response to the level of fluid in the float housing. The float assembly includes a contact member electrically connecting the first and second contacts when the level of the fluid is below the acceptable level. The contact member is coupled to the float for movement with the float and for movement relative to the float.

Abstract: A low fluid sensor for an internal combustion engine. The sensor includes a base with helically threaded post and a float slidably mounted on the post. The float rotates about the post as it moves longitudinally along it. In the preferred embodiment, eccentric mounting of the assembly along with its lobe shape act in concert with the pitch of the screw threads and fluid viscosity to dampen the buoyant movement of the float against fluid turbulence. At a predetermined level a latch spring on the float contacts an ignition circuit terminal and grounds the engine ignition circuit. A catch holds the float at the pre-determined level, preventing engine starting, so that the sensor may only be reset by addition of fluid and re-insertion of the dipstick.

Abstract: A device for measuring the level of liquid is disclosed.

Abstract: A grounding arrangement for an in-tank fuel system includes a fuel level sensor assembly of a fuel module comprising a conductive card body and a resister card supported on the conductive card body. The resister card includes a conductive trace in conductive contact with the conductive card body. The card body is conductively connected to a conductive fuel module component. The trace is adapted to be connected to the ground plane of a vehicle. Other traces on the resister card are in the electrical circuit of the fuel level sensor assembly. The fuel module further includes a conductive blade having a knife edge and in conductive contact with a conductive fuel module component. The knife edge cuts through the insulation of an insulated conductor to allow the knife edge to be in contact with the conductive element of the conductor.

Abstract: A fuel supply system for supplying fuel from a fuel tank to an engine includes a fuel pump, a pressure regulator and a level sensor. The fuel pump pumps the fuel stored within the fuel tank. The pressure regulator regulates the pressure of the fuel before being supplied from the fuel pump to the engine and serves to return a surplus fuel into the fuel tank. The sensor detects the level of the fuel within the fuel tank and a surplus fuel is capable of being discharged to the sensor.

Abstract: Two pairs of regulating means, that is, the first stopper and the second stopper, which regulate a rotary angle range of the magnet holder when the first stopper and the second stopper come into contact with the stopper of the arm integrally fixed to the magnet holder, are provided in the body which is a fixing member, and the rotary angle range of the magnet holder regulated by one pair of stoppers is made to be different from the rotary angle range of the magnet holder regulated by the other pair of stoppers. Due to the foregoing, when the expensive body is made to be a common part and a plurality of types of inexpensive arms are manufactured, the fuel level gauge can be provided, an increase in the manufacturing cost of which is suppressed, which can cope with rotary angle ranges of the plurality of types of arms.

Abstract: The present invention provides an inexpensive small-sized liquid level detector. A liquid level detector 1 includes a float moving in accordance with variations in liquid level, a hard circuit board 5, resistors 12a and 12b provided on the circuit board 5, a first sliding path 14 made of a plurality of electrodes 13 provided on the circuit board 5 and connected to the resistors 12a and 12b, and a first contact 6 coming into contact with the first sliding path 14, and the liquid level detector 1 outputs an electrical signal based on the resistances of the resistors 12a and 12b which are varied by the first contact 6 coming into contact with at least one of the plurality of electrodes 13 forming the first sliding path 14 in accordance with a variation of the float.

Abstract: A water sensor apparatus used in connection with a watering system. The water sensor apparatus includes a main housing comprising an inlet and an outlet. A valve mechanism is provided inside the main housing. The valve mechanism opens and closes the outlet of the main housing in response to a water level collected in the main housing and a water pressure entering the inlet of the main housing.

Abstract: A liquid level detecting device includes a rotative member having a bearing portion and a stationary member having an axis portion. The axis portion is fitted to a hole of the bearing portion, thereby rotatably holding the rotative member. The rotative member is integrated with a displacement member. The stationary member is fixed with a detection unit to detect a displacement of the displacement member. The rotative member is connected with a float via an arm. The axis portion has an inserted portion inserted in the bearing portion and in contact with the bearing portion via a contact portion. The contact portion has a total area that is less than an area of an outer circumferential periphery of the inserted portion.

Abstract: A level meter for measuring the fill level of a medium in a vessel, includes a reference container that can be connected to the vessel in a manner whereby the level in the reference container is identical to that in the vessel. The reference container is provided with an adapter unit for a microwave level meter operating by the radar principle which adapter unit encompasses an injection device for coupling-in a microwave signal. This constitutes a low-cost solution for connecting a microwave level meter to a reference container, ensuring optimized signal injection.

Abstract: A liquid level sensor for measuring liquid levels in underground and above ground containers includes a frame formed to have an elongate hollow tubular configuration that encloses a cavity. A cam pivot has an end extending into the cavity from a first inner wall portion of the frame. A cam is arranged to be pivotal about the end of the cam pivot. A float is placed in the cavity. A spring is arranged to bias the cam arm into contact with the float to force a side portion of the float into a locked position in frictional engagement with the second inner wall portion of the frame. A cam actuator pivotally mounted in a lower end portion of the frame exerts a force on the cam arm to release the float from the locked position when the lower end of the frame contacts the container bottom.

Abstract: The invention discloses a low liquid level detecting device comprising a float sensor and a casing. The casing has first to third chambers formed between an upper wall and a bottom wall. The top portion of the first chamber is formed with a top opening. The bottom portion of the first chamber is fluid communicated with the bottom portion of the second chamber. The top portion of the second chamber is fluid communicated with the top portion of the third chamber. The bottom portion of the third chamber is formed with a bottom opening. A float sensor is mounted inside the third chamber. A drain hole is formed through the bottom part of a chamber wall surrounding the third chamber. A method for detecting a low liquid level using the above low liquid level detecting device is also disclosed.

Abstract: Two pairs of regulating means, that is, the first stopper and the second stopper, which regulate a rotary angle range of the magnet holder when the first stopper and the second stopper come into contact with the stopper of the arm integrally fixed to the magnet holder, are provided in the body which is a fixing member, and the rotary angle range of the magnet holder regulated by one pair of stoppers is made to be different from the rotary angle range of the magnet holder regulated by the other pair of stoppers. Due to the foregoing, when the expensive body is made to be a common part and a plurality of types of inexpensive arms are manufactured, the fuel level gauge can be provided, an increase in the manufacturing cost of which is suppressed, which can cope with rotary angle ranges of the plurality of types of arms.

Abstract: The invention relates to a level meter which comprises a tank (1) which can at least be partially filled with a medium and has a bottom (12). The level meter further comprises a first measuring device (2) having a float (23) in the interior (14) of the tank (1) for indicating the level of the medium inside the tank (1). Said measuring system is disposed in the top section of the tank (1) and in parallel to a path of displacement of the float (23). An aligning unit 94) comprises at least one fixing element (41; 43; 45; 47) for fixing at least one lower section (32) of the meter tube (30) on the bottom (12) in relation to the path of displacement of the float (23) and at least one medium passage (42; 44; 46; 48) for allowing the medium to flow between the interior (14) of the tank (1) and the interior of the meter tube (30).

Abstract: Provided herein are devices useful for guiding cables, wires, cords, and the like. A device according to the present invention is particularly useful for guiding a cable that is used in providing an external liquid-level gauge on an oil tank. A cable guide means according to the present invention provides gauging means for judging the liquid levels in tanks which are more reliable than provided by the prior art, and which are essentially maintenance-free over their lifetime.

Abstract: A liquid level detection apparatus of the present invention includes contacts provided at a distal end portion of a contact plate, and resistance plates which are formed on a wiring board, and have respective conductor portions over which the contacts can slide, respectively, so as to detect a liquid level. Conductor patterns other than the conductor portions are formed on those regions of the wiring board which the contacts at the distal end portion of the contact plate contact during the time when an arm holder is mounted on the wiring board.

Abstract: The present invention relates to a liquid measuring vessel having a removable volume indicating clip.

Abstract: The present invention is directed to lubrication system having a reservoir having a body. A follower is moveably disposed in the body. The system further comprises an alarm system having an electrical switch operably associated with the follower. The alarm generates a signal when the follower is at a predetermined location in the body. The alarm system may generate a signal when the follower is at a lower location in the body such as when the reservoir has an amount of lubricant representing a predetermined amount of usage time remaining. The alarm system may also generate a signal when the follower is at an upper location in the body such as when the reservoir is filled with lubricant wherein the signal acts to automatically interrupt the fill of lubricant.

Abstract: A device measures the high and low fluid levels of a fluid body. A housing has a shaft with a buoyant weight, the shaft protruding through a cap on the housing's top and capable of sliding through the cap. A first ring encompasses the shaft and is initially positioned immediately below the cap, while a second ring is positioned immediately above the cap. As fluid enters the housing, the shaft rises in lockstep with the fluid level causing the first ring to be pushed downwardly on the shaft and when the fluid level falls, the shaft falls causing the second ring to be pushed upwardly along the shaft. The distance between the rings is the amount of fluid level variation. A debris tube attached to the housing measures the upper limit of fluid level. Subtracting the amount of variation from this upper limit yields the lower fluid level limit.

Abstract: Systems and methods for fluid level detection are disclosed. In one embodiment, a sensor assembly includes at least one optical fiber adapted to at least one of transmit and receive an optical signal, and a moveable float member. The float member is adapted to move in a first direction as the fluid level increases and in a second direction as the fluid level decreases. The float member blocks the optical signal at a first value of the fluid level, and allows the optical signal to pass at a second value of the fluid level. The presence or absence of the optical signal is detected to determine the level of fluid.

Abstract: A sliding fluid level-detecting device which is mounted in a fuel tank of a vehicle and detects a remaining amount of a liquid fuel in the tank by sliding, on a plurality of stripes of an electrode formed at an electrode part electrically connecting with a fuel meter, a contact point provided on a slider interlocking with displacement of a float floating on a fluid surface of the liquid fuel, wherein the electrode is formed out of a glass-incorporated silver-palladium alloy where glass is mixed in an amount of 30 to 50 parts by weight per 100 parts by weight of a silver-palladium alloy and the contact point is formed out of a conductive material having a Vickers hardness (Hv) of 190 to 250.

Abstract: A float-type liquid level gauge assembly is provided for measuring the level of a liquid in a tank. The liquid level gauge is designed to reduce inventory requirements and to speed the assembly process. The gauge includes a gear housing having a lower longitudinal passageway, a shaped drive shaft, a shaft head with a first receptacle and a pinion gear with a second receptacle. The shaped drive ends mate with the first and second receptacles such that the drive shaft may be inserted into the receptacles at two or less orientations. The length of the first receptacle is less than the length of the lower longitudinal passageway, so that if the drive shaft slips down in the first receptacle the drive shaft will not completely fall out of the first receptacle.

Abstract: A flowmeter has a variable area, vertically-oriented duct through which flows fluid whose flow rate is to be determined. A float in the duct assumes a position in the duct that depends on the flow rate of fluid in the duct. A window is located at an end of the duct in alignment with a longitudinal axis of the duct. A transducer unit projects a light beam through the window and along the axis toward the float. The transducer includes a light sensor that detects light returned by the float by reflection or some other mechanism to the transducer unit. The intensity or other characteristic of the returned light indicates the position of the float in the duct, from which the fluid flow rate may be determined.

Abstract: A liquid level measuring system includes a housing mounted to a container and a flexible coupling connected between the housing and a tubular frame suspended in a container holding a liquid. The flexible coupling maintains the tubular frame in a vertical orientation in the container. The tubular frame has a pair of 270° rifling grooves therein. A float is mounted in the tubular frame. The float has a pair of projections that extend from opposite sides portion thereof into the rifling grooves so that the float is force to rotate as it moves vertically in the tubular frame to seek the liquid level. A magnetic coupler assembly transfers movement of the float to an indicator. The magnetic coupler assembly includes a pair of facing dielectric discs. Each dielectric disc has three magnets mounted thereon with opposite poles facing one another.

Abstract: An in-tank fuel module apparatus arranged to provide an electrostatic discharge path from a conductive component to the ground plane. A conductive float arm is connected to a conductive support through an element in contact with the float arm and the conductive support.