| 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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| 04/28/1988 | DE3635241A1 Device for monitoring the level of a liquid in a container |
| 04/26/1988 | US4740726 Vibrator-type level sensor |
| 04/26/1988 | US4739819 Level measurement using a radiation source |
| 04/26/1988 | US4739786 Liquid level monitoring assemblies |
| 04/26/1988 | US4739658 Level sensing system |
| 04/21/1988 | WO1988002842A1 A method and measuring system for contactless measuring the values of magnitudes relating to electrically conductive materials |
| 04/21/1988 | WO1988002674A1 Device for inspecting the aggregation state boundary of metal on the surface of a casting mould |
| 04/21/1988 | DE3635397A1 Limit level sensor for liquid tanks |
| 04/21/1988 | DE3635174A1 Moped and motor cycle tank cover with built-in fuel level display by means of LED chain, through petrol density membrane switch with welded in air bubble and venting |
| 04/20/1988 | CN87212183U Low-voltage and low-liquid-level automatic alarm for vehicle storage batteries |
| 04/20/1988 | CN87204571U Water level gauge with red and green display |
| 04/19/1988 | US4739494 Apparatus for measuring the weight of fuel remaining in a fuel tank on a flying object |
| 04/19/1988 | US4739301 Device for temporarily blocking the re-measurement of an electric oil level measurement of a machine, particularly an internal combustion engine |
| 04/13/1988 | EP0263448A2 Method for analysing water and apparatus for carrying out the method |
| 04/13/1988 | EP0263226A1 A method and an instrument for monitoring the cooling conditions in a light water reactor |
| 04/13/1988 | CN87209307U Liquidometer |
| 04/13/1988 | CN87208984U Automaton for controlling liguid level |
| 04/13/1988 | CN87204956U Float liquidometer |
| 04/13/1988 | CN86205341U Glass-plate fluviograph of all visual volume and multi-function |
| 04/12/1988 | US4737791 Radar tank gauge |
| 04/12/1988 | US4736638 Liquid level sensor |
| 04/12/1988 | US4736623 Leak detector |
| 04/12/1988 | US4736622 Method for detecting leaks in an above ground petroleum storage tank |
| 04/07/1988 | WO1988002545A1 Fiber optic sensor apparatus |
| 04/07/1988 | WO1988002485A1 A moisture indicator |
| 04/06/1988 | EP0262990A2 Acoustic range finding system |
| 04/06/1988 | EP0262989A2 Process control equipment for use in adverse environments |
| 04/06/1988 | EP0262670A1 Fiber optic fluid sensors |
| 04/06/1988 | CN87211033U Condensor oil gauge |
| 04/06/1988 | CN87210547U Photospot two-colour liquid level gauge |
| 04/06/1988 | CN87209306U Two-colour liguid level for single-lighting-source inner passage sight glass |
| 04/06/1988 | CN86106730A Air tank gauge of lower fluid level |
| 04/05/1988 | US4736329 Method and system for measurement of liquid level in a tank |
| 04/05/1988 | US4736077 Low oil cut off switch |
| 04/05/1988 | US4735240 Device for detecting the filling level in a container |
| 04/05/1988 | CA1234900A1 Ultrasound level detector |
| 03/31/1988 | DE3728829A1 Fluessigkeits-fuellstandsanzeiger Liquid fuellstandsanzeiger |
| 03/31/1988 | DE3632948A1 Device for pressing out cartridges |
| 03/31/1988 | DE3632855A1 Display of the level in liquid gas cylinders |
| 03/31/1988 | DE3632158A1 Instrument for indicating the level of low-boiling liquefied gases |
| 03/30/1988 | EP0261860A2 Sensor and method for ullage level and flow detection |
| 03/30/1988 | EP0261709A2 Method and apparatus for detection of the fluid level in a tank being filled |
| 03/30/1988 | EP0261353A2 Measuring unit |
| 03/30/1988 | CN87209218U Amplifying direct-reading type water evaporation meter |
| 03/30/1988 | CN87206598U Water-level alarm and controlling unit |
| 03/30/1988 | CN87203485U Single-plate type double colour liquid-level indicator |
| 03/30/1988 | CN87203108U Multiway preset time-sharing digit-displaying liquid level controller |
| 03/30/1988 | CN87106416A Level measuring meter for non-conducting fluid |
| 03/29/1988 | US4733933 Fiber optic structure and method of making |
| 03/29/1988 | US4733560 Liquid sensing system |
| 03/24/1988 | WO1988002124A1 A method of indicating the time of an acoustic pulse and a device for carrying out the method |
| 03/23/1988 | EP0261099A2 Level-measuring instrument for electrically non-conductive liquids |
| 03/23/1988 | EP0260788A2 Residential fuel-oil level reporting and alarm system |
| 03/23/1988 | CN87106698A Apparatus for measuring charge level |
| 03/23/1988 | CN86106079A Photoelectric auto-controller for transparent liquid level |
| 03/22/1988 | US4733400 Safety shutdown system for a dye laser |
| 03/22/1988 | US4733095 Method and device for detecting average liquid level in a bottle |
| 03/22/1988 | US4732297 Liquid level detector apparatus for a concentrate dispenser tank |
| 03/22/1988 | US4732035 Method and apparatus for storage tank leak detection having temperature compensation |
| 03/17/1988 | DE3644866A1 Sensor |
| 03/17/1988 | DE3630396A1 Arrangement for level measurement and monitoring of a liquid in a container |
| 03/17/1988 | DE3629965A1 Device for level measuring |
| 03/16/1988 | EP0260157A1 Liquid supply monitoring apparatus |
| 03/16/1988 | EP0259923A1 Fuel-control device for vehicles and sensor used therefor |
| 03/16/1988 | CN87207504U Liquid depth transducer of silicon piezoresistance type |
| 03/15/1988 | US4731730 Universal fuel quantity indicator apparatus |
| 03/15/1988 | US4730650 Device for determining the fluid level in a container and container having such a device |
| 03/15/1988 | US4730649 Liquid delivery nozzle |
| 03/15/1988 | US4730491 Magnetically activated multiple switch level detector |
| 03/15/1988 | US4730490 Container having a device for the electric measurement of the level of a liquid contained within it |
| 03/15/1988 | US4730489 Variable level capacitor sensor |
| 03/10/1988 | WO1988001738A1 Opto-electronic detector |
| 03/10/1988 | WO1988001727A1 Distance and temperature measuring system for remote locations |
| 03/10/1988 | DE3629137A1 Liquid detector |
| 03/09/1988 | EP0258834A1 Liquid level sensing device |
| 03/09/1988 | CN87207470U Pneumatic dry-reed water level sensor |
| 03/09/1988 | CN87205949U Capacity indicator for domestic liquefied gas jar |
| 03/08/1988 | US4729245 Method and apparatus for monitoring liquid volume/mass in tanks |
| 03/08/1988 | US4729236 Automatic orifice calibrator |
| 03/08/1988 | CA1233667A1 Thermal system for measuring liquid levels |
| 03/03/1988 | DE3726622A1 Method for determining any liquids which occur |
| 03/02/1988 | EP0258106A1 Device for tight mounting of a gauging probe in the gauging wells of the fuel tank of an automotive vehicle |
| 03/02/1988 | EP0257724A2 Three-electrode sensor for phase comparison and pulse phase adjusting circuit for use with the sensor |
| 03/02/1988 | CN87205026U Probe of daul-purpose sliding nilometer |
| 03/01/1988 | US4728924 Portable water detector for fuel tanks |
| 03/01/1988 | US4728875 Method and apparatus for monitoring a liquid level |
| 03/01/1988 | US4728005 Self-fill system |
| 03/01/1988 | CA1233342A1 Liquid level indicator for humidifier |
| 02/25/1988 | WO1988001371A1 Ultrasonic apparatus for determining the amount of liquid in a container of known volume |
| 02/24/1988 | CN86105681A Differential pressure meter |
| 02/23/1988 | US4727247 Light attenuation sensing apparatus for measuring physical parameters and other variables utilizing a light conducting member containing a fluorescent material |
| 02/23/1988 | US4726226 Distance and temperature measuring system for remote locations |
| 02/23/1988 | CA1233251A1 Method and device for monitoring the level of a liquid in a tank |
| 02/18/1988 | DE3627160A1 Measurement device for determining the filled volume of a urinary bladder |
| 02/17/1988 | EP0255960A1 Differential pressure type liquid-level meter |
| 02/17/1988 | CN87209305U Sight glass liquid-level gauge with inner channel |
| 02/16/1988 | US4724706 Fuel tank gauge |
| 02/16/1988 | US4724705 Fuel gauge |
| 02/11/1988 | WO1988001046A1 Hall effect liquid level sensor system |
| 02/11/1988 | WO1988000856A1 Automatically adjustable weir and environmentally protected sensor |