| 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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| 04/14/1994 | DE4233677A1 Correlation reception of known periodically transmitted pulses - involves multiplying received signal by variable phase control signal formed from transmitted signal |
| 04/13/1994 | EP0591816A2 Method for measuring fluid level in a container using the radar principle |
| 04/13/1994 | CN2161911Y Magnetic coupling fluid level gage |
| 04/13/1994 | CN2161910Y Optical code liquid level indicator |
| 04/13/1994 | CN2161909Y Numerical fluid level sensing display controller |
| 04/13/1994 | CN2161908Y Buoyancy type liquid-adding measuring device |
| 04/13/1994 | CN1024225C Multifunctional liquid level long-range controller |
| 04/12/1994 | US5301873 Low fluid indicator for pressurized canister |
| 04/12/1994 | US5301550 Float for an automotive liquid level detection device |
| 04/12/1994 | US5301549 Liquid-level gauging |
| 04/12/1994 | US5301514 Low refrigerant charge detection by monitoring thermal expansion valve oscillation |
| 04/10/1994 | CA2105547A1 Waterproof seal for gauges |
| 04/07/1994 | DE4233315A1 Vorrichtung zur Befestigung eines Gehäuses Device for fastening a housing |
| 04/07/1994 | DE4233278A1 Verfahren zur Unterdrückung von Fremdstrahlungseinflüssen bei radioaktiven Meßverfahren A method of suppressing extraneous radiation influences in radioactive measurement method |
| 04/06/1994 | CN2160951Y Water overflow prevention alarm for solar water heater |
| 04/06/1994 | CN2160889Y Single-wire electrode sensing type water levelk monitor |
| 04/05/1994 | US5300781 Fast neutron detection system |
| 04/05/1994 | US5299456 Electronic dipstick for indicating the oil level of an engine |
| 04/05/1994 | CA1328177C Universal fuel sender |
| 03/31/1994 | WO1994007236A1 Ultrasonic transducer |
| 03/31/1994 | WO1994007122A1 Density measurement |
| 03/31/1994 | WO1994007083A1 Disposable liquefied gas cylinder with remaining volume alarm and manufacturing method thereof |
| 03/31/1994 | WO1994003781A3 Liquid volume measuring apparatus |
| 03/31/1994 | DE4232719A1 Vibration fill-level limit switch - has level measurement device connected to remote evaluation circuit, and performs regular functional test cycles |
| 03/31/1994 | DE4232659A1 Vorrichtung zur Feststellung und/oder Überwachung eines vorbestimmten Füllstands in einem Behälter Apparatus for detecting and / or monitoring a predetermined level in a container |
| 03/31/1994 | DE4232346A1 Measuring the amount of sludge, liquid fuel or oil in a sepn. tank - includes air pearling sensor fixed to float of limited movement range, reducing complexity of sensor installation and tubes, enhancing results, etc. |
| 03/31/1994 | DE4232043A1 Process and appts. for continuous monitoring of fluid level - within a container such as the coolant level within a nuclear reactor |
| 03/30/1994 | EP0589573A2 A float for a liquid level operated device |
| 03/30/1994 | EP0589507A2 Apparatus and method for fluid level determination in automatic transmissions |
| 03/30/1994 | CN2160104Y Light over long two colure water level |
| 03/30/1994 | CN2160103Y Light two colour water level |
| 03/29/1994 | US5299141 Automatic fluid monitoring and sampling apparatus and method |
| 03/29/1994 | US5298881 Low liquid level monitoring and warning apparatus and method |
| 03/29/1994 | US5297429 For viewing the contents of a production process |
| 03/29/1994 | US5297428 Salt level monitoring device |
| 03/29/1994 | US5297393 Liquid level and temperature monitoring apparatus |
| 03/24/1994 | DE4231046A1 Storage tank for liquid esp. for IC engine lubrication oil - has filling connection with filler cap closable according to filling level in tank |
| 03/23/1994 | EP0587728A1 Digital level sensing probe system |
| 03/23/1994 | CN2159556Y Infrared photoelectric digital level meter with alarm |
| 03/23/1994 | CN2159555Y Far transmission level meter |
| 03/23/1994 | CN2159554Y Photoelectric colour level displayer |
| 03/22/1994 | US5295359 Compressor for receiving a gas expelled |
| 03/22/1994 | CA1327896C Low wear resistor card for use in a liquid fuel sender circuit |
| 03/17/1994 | DE4230626A1 Ultrasonic measurement of vol. flow of bulk material on conveyor belt - checking correct running and plausibility of measured values in computation of instantaneous rate and aggregate quantity. |
| 03/17/1994 | DE4230598A1 Liq. level checking device esp. for IC engine sump - comprises coaxial arrangement of dipstick in guide tube and electrical level sensor associated with wall opening for dipstick |
| 03/16/1994 | CN2159018Y Float-grid type level gauge |
| 03/16/1994 | CN2159017Y Detecting and controlling apparatus for large intake mouth water level and water head |
| 03/15/1994 | US5295120 Hermetically sealed ultrasonic transducer system |
| 03/15/1994 | US5294917 Liquid level sensor using float and magnetic means |
| 03/15/1994 | US5293896 Arrangement for measuring the level of liquified gases |
| 03/15/1994 | CA1327714C Fuel measuring system |
| 03/10/1994 | DE4232720C1 Function self-monitoring and measurement signal processor for vibration-fill-state limit switches - has parallel-working microprocessors each associated with pair of safety relays, which are switched-over for each self-test while maintaining connection state with external relay |
| 03/09/1994 | EP0585910A2 Clinometer |
| 03/09/1994 | EP0521975B1 Process for quantity-related disposal of household and industrial refuse and quantity-related disposal system for said refuse |
| 03/09/1994 | CN2158533Y Capacitance sensing type material capacity indicator |
| 03/09/1994 | CN2158532Y Double color liquid level indicator |
| 03/08/1994 | US5291782 Eddy current position sensor |
| 03/03/1994 | WO1994004019A1 Mass flow rate measurement device |
| 03/03/1994 | DE4329571A1 Capacitive AC inclination sensor for determining level of lubricating dielectric liquid of vehicle transmission - divides capacitor into two pairs of electrodes spaced by gaps in which liq. is located, which gaps communicate by principle of communicating tubes |
| 03/03/1994 | DE4229295A1 Contents monitor for fire extinguishing container - connects crossbeam to end of weighing-beam remote from balance point, connects leg to crossbeam, and suspends container at end of leg at short distance from bearing point |
| 03/03/1994 | DE4229079A1 Pulse echo distance measuring system, e.g. for filling level monitor - uses transmitted signal comprising discrete pulse packets with individual evaluation of received signal echo components |
| 03/03/1994 | DE4228591A1 Electrical probe e.g. for monitoring level of hot liquid in e.g. steam chamber - has stop for limiting longitudinal thermal expansion of plastic insulating casing located around electrode rod |
| 03/02/1994 | EP0585177A1 Liquid detector with thermistor |
| 03/02/1994 | CN1083210A Method for detecting liquid level and apparatus thereof |
| 03/01/1994 | US5291032 Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers |
| 03/01/1994 | US5291031 Optical phase difference range determination in liquid level sensor |
| 03/01/1994 | US5289846 Automatic liquid replenishing system |
| 02/24/1994 | DE4227922A1 Capacitive mass flow measurement system esp. for harvester - forms measurement capacitor by electrodes located on conveyor chute walls downstream of corn-elevator, with protection electrode adjacent one electrode |
| 02/23/1994 | CN1082710A High temperature and high pressure anti-block magnetic-float liguid level sensor |
| 02/23/1994 | CN1082709A Swing type level meter for powder material |
| 02/22/1994 | US5289211 Ink detecting device for a liquid-ink printing element |
| 02/22/1994 | US5287993 Hopper agitator |
| 02/17/1994 | WO1994003816A1 Fluid indicator assemblies for sight flow apparatus |
| 02/17/1994 | WO1994003782A1 Stillpipe sealing device |
| 02/17/1994 | WO1994003781A2 Liquid volume measuring apparatus |
| 02/17/1994 | WO1994003778A1 Non-contact distance-measuring system and method of non-contact distance measuring |
| 02/17/1994 | DE4230773C1 Ultraschallwandler Ultrasonic transducer |
| 02/17/1994 | DE4226813A1 Measuring fill level in vessel e.g. bottle - adjusting test voltage to reference probe fully immersed in one vessel, according to conductivity of measured liq. to set current, and applying test voltage to measurement probe to derive current signal |
| 02/17/1994 | DE4226441A1 Arrangement for measuring vaporisation rate of liquefied gases - has evaporation opening flow measurement device, press. sensors, level measurement device and computer unit |
| 02/16/1994 | EP0583213A2 Method and apparatus for determining the phase of a fluid |
| 02/16/1994 | CN2156484Y Optical fibre liquid level sensor |
| 02/16/1994 | CN2156483Y Self-closing type liquid level display instrument |
| 02/16/1994 | CN2156482Y All-reflection optical liquid level monitor |
| 02/16/1994 | CN1082107A Capacitance-type intelligent detecting monitor of bubble level in fermentor |
| 02/16/1994 | CN1023835C Level-sensing device |
| 02/15/1994 | US5287086 Proximity detection system and oscillator |
| 02/15/1994 | US5285812 Jet level sensor for fuel tanks |
| 02/15/1994 | US5285682 Sponge absorbed fluid measuring unit |
| 02/11/1994 | CA2100697A1 Method and apparatus for determining the phase of a fluid |
| 02/10/1994 | DE4225968A1 Berührungslos arbeitendes Wegmeßsystem und Verfahren zur berührungslosen Wegmessung Contact optical measuring system and method for non-contact displacement measurement |
| 02/09/1994 | CN2155557Y Water tower low-water warning means |
| 02/08/1994 | US5285388 Detection of fluid reflection for echo sounding operation |
| 02/08/1994 | US5284055 Device for measuring the fuel level in a motor vehicle tank |
| 02/08/1994 | US5284052 For collecting and accurately measuring precipitation |
| 02/03/1994 | WO1994002839A1 A process for analyzing the contents of containers |
| 02/03/1994 | WO1994002820A1 Water sensor that detects tank or vessel leakage |
| 02/03/1994 | WO1994002804A1 Rejecting noise in magnetostrictive position detector by determining valid time range for propagation of reference sonic pulses |
| 02/03/1994 | DE4324268A1 Detector of two levels of electrically conductive liq. e.g. for water level control - has lower common reference electrode, and connects upper and lower electrodes of different electrochemical potentials together to form short-circuited battery when both are surrounded by liq. |
| 02/02/1994 | CN2155010Y Magnetic fluid level gauge |
| 02/02/1994 | CN2155009Y Float liquid level detector for vessel |