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)
11/1989
11/15/1989EP0342098A1 Level gauge
11/15/1989EP0342028A2 Urine collection monitor
11/15/1989EP0341438A2 Pneumatic sensing system
11/14/1989US4881088 Plotter pen ink level detector
11/14/1989US4880990 Optical liquid-level sensing apparatus
11/14/1989US4880982 Fluid indicator for a containment vessel
11/14/1989US4880971 Fiber optic liquid level sensor
11/14/1989US4880212 Device for detecting the level of the slag in a metal pool
11/14/1989US4879902 Level control structure with probes
11/09/1989DE3153376C2 Device for gravimetric determination of the quantity of a fluid, especially of mineral oil products in a large tank
11/08/1989EP0340953A2 Acoustic range finding system
11/08/1989EP0340309A1 Heat-sensitive fuel quantity detector
11/08/1989CN2047365U Photoelectric liquid level gauge
11/07/1989US4878383 Optical fluid level sensor
10/1989
10/31/1989US4877066 Apparatus for filling transmission fluid into transmissions
10/31/1989US4876891 Product-dispensing method and apparatus
10/31/1989US4876888 Thickness monitor for floated sludge
10/26/1989DE3907489A1 Device for monitoring the liquid level in a container
10/25/1989EP0338400A2 Capacitive sensor for determining the liquid level in a container
10/24/1989US4876529 Method and system for detecting the level of engine oil of an engine
10/24/1989US4875497 Capacitance liquid level sensing and touch control system
10/24/1989US4875370 Apparatus for measuring the contents of a tank
10/24/1989US4875295 Drop-weight material level indicator
10/24/1989CA1262480A1 Automatic precision liquid loading control system
10/18/1989EP0337293A1 Level measurement device
10/18/1989EP0337292A2 Intermittent voltage application on an electrode
10/17/1989US4874426 Surface tensiometer and concentration controlling device
10/17/1989US4873865 Fuel sender assembly requiring no calibration
10/17/1989US4873863 Volumetric leak detection means and method
10/12/1989DE3909647A1 Sensor device for the fuel level in a vehicle tank
10/12/1989DE3810670A1 Device for monitoring liquid level
10/12/1989DE3810669A1 Device for monitoring the level of a liquid
10/11/1989EP0336615A1 Electromagnetic flowmeter capable of simultaneous measurement of flow rate and conductivity of fluid
10/11/1989EP0336451A2 Portable gas grill
10/11/1989CN2045844U Optical fiber monitor for liquid level
10/11/1989CN2045843U Reflection liquid level indicator glass
10/10/1989US4872974 Apparatus for testing membrane filters, and for sterilizing liquids with use of membrane filter
10/05/1989WO1989009533A1 Disconnection detection apparatus for lamps
10/05/1989DE3908548A1 Method for measuring the liquid level in a container and measuring sensor for carrying out the method
10/05/1989DE3810034A1 Magnetic-inductive flowmeter
10/04/1989EP0335058A1 Device for metering the mass of natural gas for fueling motor vehicles
10/04/1989EP0334876A1 Volumetric leak detection system for underground storage tanks and the like
10/04/1989CN2045480U Water level measuring electrode for ordinary pressure container
10/04/1989CN2045479U Apparatus for liquid level electronic display and autocontrol warner
10/03/1989US4872120 Multiplexed junction probe for fuel gaging system and system containing same
10/03/1989US4871000 Method and apparatus for the continuous measurement of the depth of a radioactive glass melt flowing into a container
10/03/1989US4870862 Pressurized magnetic float level indicator for receptacles containing liquids at high pressure and temperature
10/03/1989US4870861 Liquid level indicator
09/1989
09/28/1989DE3808481A1 Device for the determination of a specific level in a container
09/27/1989EP0334533A2 Fibre optic discrete or continuous liquid level sensor
09/26/1989US4870292 Fibre optic sensor for liquid level and other parameters
09/26/1989US4870278 Wide-range fluid level detector
09/26/1989US4869104 Differential pressure type liquid level meter
09/26/1989CA1261940A1 Water backup alarm system
09/26/1989CA1261646A1 Device for indicating the quantity of a liquid held in a tank, and tank thus equipped
09/26/1989CA1261031A1 Fluid detection system
09/26/1989CA1260287A1 Measurement calibration
09/26/1989CA1260107A1 Fire hydrant sentry
09/20/1989EP0333621A1 Improvements in height measuring devices for billet filling
09/20/1989EP0333524A2 Liquid container with a follower
09/20/1989CN2044728U Liquid level senser
09/20/1989CN2044727U Nagetive-pressure and sensing-type automatic tracker of powder level
09/20/1989CN2044726U Measurer for measuring reserve in steel cylinder of petroleum gas
09/19/1989US4868797 Time-shared AGC for ultra-sound liquid level meter
09/19/1989US4868508 Trouble detecting circuit for resistive sensor type indicator
09/19/1989US4867872 Automatically adjustable weir and environmentally protected sensor
09/19/1989US4866994 Refrigeration system oil measurement and sampling device
09/14/1989DE3804474A1 Probe entry lock
09/13/1989EP0332534A1 Level switch device using elastic Lamb waves for the detection of a liquid being at a predetermined level
09/13/1989EP0332228A2 Portable gas grill
09/13/1989CN2044346U Precision digit water level meter
09/13/1989CN1035560A Utilization of detector/conveyer on nuclear model interfacial positions
09/12/1989US4866428 Remote battery cell specific gravity and electrolytic level monitor using floats and optical couplers
09/12/1989US4865073 Liquid level control for refrigeration system
09/12/1989US4864857 Level indicator
09/12/1989US4864856 Liquid level detecting device
09/07/1989DE3900814A1 Quick-acting closure for/on stationary and mobile tank containers
09/05/1989US4864302 Data entry systems for converting an analog instrument to machine-readability
09/05/1989US4862745 Fuel tank float
08/1989
08/30/1989EP0330264A1 Method of measurement of the level of the surface of a metal bath
08/30/1989EP0330123A2 Utilization of a nuclear-type interface level detector/transmitter
08/30/1989EP0330066A2 Device for preparing hot beverages such as coffee, tea or the like
08/29/1989US4860401 Dipstick wiper
08/24/1989WO1989007746A1 Magnetic position sensor
08/24/1989DE3804674A1 Capacitative level-measuring probe
08/23/1989CN2043350U Photoelectric liquid level exploring head
08/23/1989CN2043349U Boiler water-level optical-fibre remote indicator
08/23/1989CN2043348U Surveying instrument for liquid level
08/22/1989US4859987 Apparatus and method for monitoring liquid levels
08/22/1989US4858468 Method of detecting remaining quantity of replenishing solution
08/16/1989EP0327958A1 Apparatus for measuring the contents of a tank
08/16/1989CN2042952U Capacity digital display liquid level gauge
08/16/1989CN2042951U Infrared ray charge level indicator
08/16/1989CN2042950U Explosion-proof reflection transmission type two-colour liquid-level gauge
08/16/1989CN2042731U Alarm for fluid infusion
08/15/1989US4857050 Ratiometric air-in-line detector
08/15/1989US4856343 Monitoring liquid level infed tank and flow rate of liquid therefrom to point of use
08/15/1989US4856288 Refrigerant alert and automatic recharging device
08/15/1989CA1258509A1 Apparatus for detecting an interface in fluids
08/08/1989US4854166 Lightweight wading rod for stream flow measurements
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