| Patents for G01F 23 - Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm (31,056) |
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| 02/01/1994 | US5282386 Apparatus and technique for fluid level determination in automatic transmissions |
| 02/01/1994 | CA2025187C Method of and apparatus for detecting level of molten metal |
| 02/01/1994 | CA1326709C Acoustic range finding system |
| 01/27/1994 | DE4233185C1 Vorrichtung zur Feststellung und/oder Überwachung eines vorbestimmten Füllstandes Apparatus for detecting and / or monitoring a predetermined level |
| 01/27/1994 | DE4224635A1 Probe for monitoring a medium, e.g. liquid or bulk material level in container - is suspended by cable with bent end section with capsule closely enclosing doubled cable for strain relief |
| 01/26/1994 | EP0580483A1 Method of and device for fluid surface detection using an ultrasonic transducer |
| 01/26/1994 | EP0580004A1 Method and apparatus for detecting the position of liquid-liquid interfaces |
| 01/25/1994 | CA1326519C Liquid-level detector |
| 01/25/1994 | CA1326379C Liquid level sight gauge |
| 01/21/1994 | CA2100807A1 Method of and device for fluid surface detection using an ultrasonic transducer |
| 01/20/1994 | WO1994001764A1 Controller for ultrasonic sensors |
| 01/20/1994 | DE4223346A1 Contactless distance measurement arrangement using pulse=echo signals - uses neural network to evaluate transition time of transmitted and reflected signal |
| 01/19/1994 | CN2153784Y High pressure spring magnetic float liquidometer |
| 01/19/1994 | CN2153783Y 水位监测器 Level Monitors |
| 01/19/1994 | CN2153782Y Liquid level alarm interlock indicator |
| 01/19/1994 | CN2153781Y Sector inner passage glass peep device |
| 01/18/1994 | US5279252 Fuel tank level indicator |
| 01/18/1994 | US5279158 Steam bubbler water level measurement |
| 01/18/1994 | US5279157 Liquid level monitor |
| 01/18/1994 | US5279156 Distance measuring device especially for measuring the fill level in industrial tanks |
| 01/13/1994 | DE4220483C1 Engine oil sump level variation measuring device - has fluid equalisation line between sump and measuring chamber and pressure equalisation line coupling spaces above oil level |
| 01/12/1994 | EP0355134B1 Optical fluid level sensor |
| 01/12/1994 | CN2153046Y Device for measuring steel liquid level in container |
| 01/11/1994 | USRE34501 Sensor and method for ullage level and flow detection |
| 01/11/1994 | US5278426 Optical liquid level sensor for pressurized systems utilizing prismatic element |
| 01/11/1994 | US5277797 Oil and water separator for the bilge of a boat |
| 01/11/1994 | US5277337 Hopper agitator |
| 01/11/1994 | US5277065 Detector with ringdown frequency matching |
| 01/11/1994 | US5277054 Apparatus for in-situ calibration of instruments that measure fluid depth |
| 01/11/1994 | CA1326066C Apparatus and method for determining the amount of substance in a vessel |
| 01/06/1994 | WO1994000746A1 Gauge well system |
| 01/06/1994 | WO1994000377A1 Process and device for setting the filling level in vessel filling machines |
| 01/06/1994 | CA2115930A1 Method and apparatus for adjusting the filling level in filling machines for vessels |
| 01/05/1994 | DE4222006A1 Pressurised reactor chamber vessel viewing glass mounting for facilitating replacement - has slidable carrier with two apertures respectively for replacement glass and in-use glass located over opening in vessel wall. |
| 01/05/1994 | CN1080395A Level switch |
| 01/04/1994 | US5275216 Liquid overflow shut-off valve |
| 01/04/1994 | US5275044 Three wire potentiometric liquid level sensor |
| 12/29/1993 | EP0575312A1 Liquid level and composition sensor and method |
| 12/29/1993 | CN2151450Y Two purpose level meter |
| 12/29/1993 | CN2151449Y Two colour level meter without blind zone |
| 12/28/1993 | US5274245 Optical liquid level detector using dual varying light emitters |
| 12/28/1993 | US5273134 Oil consumption measurement system for internal combustion engine |
| 12/28/1993 | US5273076 Solvent transport device |
| 12/28/1993 | US5272921 Probe for monitoring liquid |
| 12/28/1993 | US5272920 Apparatus, method and system for monitoring fluid |
| 12/28/1993 | US5272919 Method of measuring level of filling |
| 12/28/1993 | US5272918 Pivotal liquid level sensor assembly |
| 12/23/1993 | WO1993025914A1 Liquid dispensing system |
| 12/23/1993 | WO1993025870A1 Electrical connector for a liquid level indicator |
| 12/23/1993 | WO1993025869A1 Vertical sweep liquid level sensor |
| 12/23/1993 | DE4237044A1 Setting effective filling level for vessel filling machine, e.g. for bottles - using liq. level probe with multiple contact points along length connected to resistors in circuit to generate proportional signal |
| 12/23/1993 | DE4219672A1 Optical control of closed space, e.g. of furnace contg. material charged atmosphere - using inspection glass closing sight opening in wall enclosing space with inside surface of inspection glass acted on by rinsing gas |
| 12/23/1993 | CA2136630A1 Liquid dispensing system |
| 12/22/1993 | EP0575221A1 Method for eliminating the signals of obstacles by radar and its applications |
| 12/22/1993 | CN2150536Y Magnetic-float type liquid level display and controller |
| 12/22/1993 | CN2150535Y Liquid-level meter |
| 12/22/1993 | CN2150534Y Float type boiler low level-meter |
| 12/21/1993 | US5271902 Quantitative liquid sampling instrument |
| 12/21/1993 | US5271273 Oil level indicator |
| 12/18/1993 | CA2071424A1 Tilt sensor and a bin level sensor using the tilt sensor |
| 12/15/1993 | EP0574279A1 Measurement and control procedure for the instantaneous flow of a liquid additive delivered by a pump |
| 12/15/1993 | EP0419636B1 Device for level gauging with microwaves |
| 12/15/1993 | EP0381762B1 Automatic milk counter for milking installation |
| 12/15/1993 | CN2149610Y Float type liquid level sensing device |
| 12/15/1993 | CN2149609Y Gas medium ultrasonic energy-exchanger |
| 12/14/1993 | US5270210 Capacitive sensing system and wash/alignment station for a chemical analyzer |
| 12/14/1993 | US5269188 For detecting presence of a liquid |
| 12/14/1993 | US5269184 Device for measuring and controlling ground water levels and method of manufacturing such device |
| 12/14/1993 | CA1325277C Method of measurement of the level of the surface of a metal bath |
| 12/09/1993 | WO1993024950A1 Window mounted optical moisture sensor having light pipes with distal ends |
| 12/09/1993 | WO1993024812A1 An apparatus for product/water interface measurement in a product storage tank |
| 12/09/1993 | WO1993024052A1 Measuring cell for a device for monitoring bodily fluid emerging from a catheter |
| 12/09/1993 | CA2136637A1 An apparatus for product/water interface measurement in a product storage tank |
| 12/08/1993 | EP0573274A2 Ink amount detecting device and recording apparatus provided with such a device |
| 12/08/1993 | EP0573034A2 Method and apparatus for distance measurement using the transit time of pulses |
| 12/08/1993 | EP0349528B1 A method and measuring system for contactless measuring the values of magnitudes relating to electrically conductive materials |
| 12/08/1993 | CN2148949Y Self-adapting ultrasonic fluid level meter |
| 12/08/1993 | CN2148948Y Optoelectronic colour fluid level indicator |
| 12/08/1993 | CN2148947Y Fluid level sensing instrument |
| 12/08/1993 | CN2148946Y Fluid level gauge |
| 12/07/1993 | US5267475 Vertical sweep liquid level sensor |
| 12/07/1993 | US5267474 Liquid-level sensor |
| 12/07/1993 | US5267370 Suction device for liquids |
| 12/07/1993 | CA1325027C Seal for sending unit |
| 12/02/1993 | DE4217658A1 Sensor arrangement for compensation of electrolytic inclination sensors - uses auxiliary electrodes near outer electrodes on equipotential surface, with control electronics for error compensation |
| 12/02/1993 | DE4217305A1 Level detecting switch for use with liquid, granular or powder materials - has probe with electrode and dielectric body enclosed by earthed annular counter electrode |
| 12/01/1993 | EP0572071A1 Device for indicating level in a tank, in particular an automobile tank |
| 12/01/1993 | EP0572010A2 Vessel level sensor mounting structure with positive mechanical lock |
| 12/01/1993 | CN1079048A Dielectric constant liquid level, interface, temperature and pressure senser |
| 11/30/1993 | US5265482 Method of sampling a container |
| 11/30/1993 | US5265446 Control apparatus for washing machine |
| 11/30/1993 | CA2096694A1 Vessel level sensor mounting structure with positive mechanical lock |
| 11/24/1993 | EP0571100A1 Pipette apparatus |
| 11/24/1993 | EP0570526A1 Device, system and method for measuring an interface between two fluids |
| 11/23/1993 | US5265032 Method for controlling LP gas inventory |
| 11/23/1993 | US5264831 Device for determining and/or monitoring a predetermined contents level in a container |
| 11/23/1993 | US5263371 Methods for temperature-compensated liquid height and leak detection measurements using quasi-static reference subsystem |
| 11/23/1993 | US5263370 For measuring the quantity of a sample |
| 11/18/1993 | EP0570140A1 Level measurement using autocorrelation |
| 11/18/1993 | EP0569834A1 Electrical indicator for the fuel contained in the tank of a motor vehicle |