Patents
Sitemap › G01 - Measuring; Testing › G01F - Measuring volume, volume flow, mass flow, or liquid level; Metering by volume › 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
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)
11/1990
11/28/1990EP0399678A1 Control circuit for electrical gauge
11/28/1990EP0399069A1 Method to determine with a pressure sensor the combustion pressure in a cylinder of a combustion engine
11/28/1990CN1010612B Device for measuring accumulator electrolyte parameters
11/27/1990US4972705 Liquid level detection
11/27/1990US4972543 Ullage rod cleaner
11/21/1990CN2066130U Photoelectric track remote sensing fluviograph for boiler
11/20/1990US4972386 Filling level meter
11/20/1990US4972327 Apparatus for measuring the level of filling of a fuel tank
11/20/1990US4970896 Float activated gauge
11/15/1990WO1990013797A1 Urine collection monitor with temperature sensing
11/15/1990WO1990013796A1 Container for liquids, with a hydrostatic liquid-level measurement device
11/15/1990WO1990013789A1 Flexible tube sonic waveguide for determining liquid level
11/15/1990DE3915475A1 Sensor measuring charge of accumulator with moving float - dependent on acid density and float on surface of electrolyte and sensor for measuring temp.
11/14/1990EP0397480A1 Measurement of mass of fluid in a container
11/14/1990EP0397338A1 Liquid float gauge assembly
11/14/1990CN2065754U Optical level indicator
11/14/1990CN2065610U Liquid level meter
11/14/1990CN1010428B Float-type fluviograph
11/13/1990USRE33435 Ultrasound level detector
11/13/1990US4970468 Analytical equipment with function of detecting liquid surface capacitively
11/13/1990US4969363 Electromagnetic flowmeter capable of simultaneous measurement of flow rate and conductivity of fluid
11/12/1990CA2016628A1 Measurement of mass of fluid in a container
11/08/1990DE3914689A1 Electrical display glass lamp - is mounted on flange holder on container, boiler, pipe or similar for illumination and observation of working processes
11/07/1990EP0395788A1 Thermostatic bimetal measuring unit
11/06/1990US4968976 Alarm kit for a chemical tank of a noncommercial water purification system
11/06/1990US4968946 Apparatus and method for determining resistance and capacitance values
11/06/1990US4967880 Process and apparatus for monitoring lubricating oil water content for rotary printing presses
11/06/1990US4967594 Sheathing and venting of resistance-tape level sensor
11/06/1990US4967593 Method and apparatus for distinguishing between different substances in a container
10/1990
10/31/1990EP0395629A2 Chip level indicator with differential transformer
10/31/1990EP0395602A2 A hot-thermocouple device for measuring levels and for pointing out phases at high temperatures and pressures
10/31/1990CN2064880U Charge level synchronized follower of on-line measuring probe
10/30/1990US4967181 Fuel level gauge provided with an apparatus for issuing a warning on the amount of remaining fuel
10/30/1990US4966827 Polymer printing
10/30/1990US4966008 Arrangement of ice fullness detector in ice making machine
10/30/1990US4965942 Dipstick handle
10/25/1990DE3913096A1 Measuring liquid quantity in container, esp. vehicle fuel tank - from periodic press change in gas above liquid which periodically varying its vol with pump
10/25/1990DE3912783A1 Motor vehicle level measurement arrangement - has immersed transmitter of constant ultrasonic signal in tank parallel to receiver at constant distance
10/25/1990DE3912781A1 Level measurement arrangement esp. for fuel container - has analogue probe contg. digital probe producing nonlinear variation at defined levels enabling calibration
10/24/1990EP0394075A1 High pressure gas gauging device, particularly for a reserve of gaseous oxygen on board an aeroplane
10/24/1990EP0393144A1 Optical liquid level sensors
10/24/1990EP0381762A4 Automatic milk counter for milking installation
10/24/1990EP0372089A4 Method and device for determining the quantity of milk extracted from one cow
10/24/1990EP0367786A4 Optical liquid level sensor
10/23/1990US4965555 Arrangement for accurately installing a replaceable reed switch of a device for monitoring the liquid level in a tank
10/23/1990US4965041 Instrument for monitoring the cooling conditions in a light water reactor
10/23/1990US4964736 Immersion measuring probe for use in molten metals
10/23/1990US4964301 Chip level indicator with differential transformer
10/18/1990WO1990012307A1 Device for measuring volume mass and fluid level in situ
10/18/1990WO1990012292A1 Device for level gauging with microwaves
10/18/1990DE3912272A1 Container level measurement arrangement - measures hydrostatic pressure externally as pressure gas bubbles are introduced for container with stirrer
10/18/1990DE3912038A1 Predefined container level measurement and/or monitoring device - has vibration system with vibration elements in centres of parallel membranes acting as restoring spring
10/16/1990US4964090 Ultrasonic fluid level sensor
10/16/1990US4963731 Optical level measurement system
10/16/1990US4963729 Optically powered sensor system with improved signal conditioning
10/16/1990US4962666 Mass flowmeter apparatus
10/16/1990US4962661 Liquid level sensing switch actuator
10/11/1990DE4011858A1 Liquid level measurement transducer - achieves fixed relationship between magnetic switches and defined values using shift register
10/11/1990DE3911152A1 Precipitation gauge
10/10/1990EP0382852A4 Device for determining the index of productivity and food ration of animals
10/10/1990EP0232272A4 Liquid level monitoring assemblies
10/10/1990CN2063626U Built-in float type liquid level transducer
10/10/1990CN2063625U Multifunction liquid level gauge
10/10/1990CN2063624U Double tube bicolor fluviograph
10/10/1990CN2063510U Bunker provided with infrared point-to-point charge level indicator
10/09/1990US4962395 Liquid level sensor with wide temperature range capacity
10/09/1990US4962370 Off-center cap-level magnetic float sewer alarm
10/09/1990US4961456 Automatic control system for filling beverage containers
10/04/1990WO1990011495A1 Mounting head for a resistance-tape level sensor
10/03/1990EP0390414A1 Overflow prevention for soft drink dispensers
10/02/1990US4961069 Dual optical level monitor
10/02/1990US4959997 Magnetic float for magnetic sensor
09/1990
09/30/1990CA2012847A1 Overflow prevention for soft drink dispensers
09/27/1990DE3940455A1 Liquid level measurement arrangement - contains flat strip cable with parallel illuminating and conducting cable pairs detecting liquid presence at corresp. levels
09/27/1990DE3909592A1 Liquid container having a liquid pump and a level transmitter
09/27/1990DE3908199A1 Vorrichtung zur identifizierung der erstarrungsfront einer schmelze Melt apparatus for identification of the solidification front of a
09/26/1990CN2062830U Photoelectric liquid level gage with pulley encode
09/26/1990CN2062829U Local fluid level volumeter of float bowl chain ruler
09/26/1990CN2062828U Cylinder refraction-reflaction type bichromatic liquid level gage
09/25/1990US4958668 Variable flow valve equipped safety spout
09/25/1990US4958665 Apparatus for adjusting level of liquid to be filled into packaging tube
09/25/1990US4958518 Sensor for determining liquid level in a container
09/25/1990US4958501 Refrigerant charging apparatus
09/20/1990WO1990010849A1 Acoustic fluid level detector
09/20/1990WO1990010848A1 Liquid level sensor
09/19/1990EP0387393A1 Level sensor
09/19/1990EP0387287A1 Thermoplastic melting apparatus with a level indicator.
09/18/1990US4956996 Tank gauging apparatus and method
09/13/1990DE3907198A1 Device having a carrier film exhibiting a metallic layer
09/12/1990EP0386965A1 Optically powered sensor arrangements
09/12/1990EP0386684A1 Suspended-cable apparatus for measuring level of material in a storage vessel
09/12/1990CN1009579B Pn conjunction senser relative with the temperature changing
09/11/1990US4956606 Non-contact inductive distance measuring system with temperature compensation
09/11/1990US4956560 Liquid level detector system with fill-level signature detection
09/11/1990US4955231 Liquid float gage assembly
09/11/1990CA1274005A1 Low oil sensor for an internal combustion engine
09/09/1990CA2011758A1 Suspended-cable apparatus for measuring level of material in a storage vessel
09/06/1990CA2010392A1 Fluid level sensor and controller
09/05/1990EP0385788A2 Passive acoustics method to monitor fluidized bed level
09/05/1990EP0385105A1 In-tank fuel reservoir with fuel level sensor
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