| Patents for G01F 25 - Testing or calibrating of apparatus for measuring volume, volume flow, or liquid level, or for metering by volume (5,338) |
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| 03/19/2013 | US8401761 Fuel indicator method |
| 03/19/2013 | US8397744 Distribution valve monitor and distribution valve incorporating same |
| 03/13/2013 | EP2567199A1 Flow rate meter |
| 03/13/2013 | CN202793480U Zero correction device for electromagnetic flowmeter |
| 03/13/2013 | CN102971611A Piston prover |
| 03/13/2013 | CN102967350A Calibration device and calibration method for automobile air mass flow meter |
| 03/13/2013 | CN102967349A Networked on-line inspection method of supersonic gas flowmeter |
| 03/13/2013 | CN102967348A Full-flow-point rapid detection device for water meter |
| 03/13/2013 | CN102967347A Level gauge calibration device |
| 03/07/2013 | WO2013033198A1 Calibration and consistency check of variable volume systems |
| 03/07/2013 | WO2013029664A1 An ultrasonic measurement device and a method for operating the same |
| 03/07/2013 | CA2847252A1 Calibration and consistency check of variable volume systems |
| 03/06/2013 | EP2565594A1 Coriolis flowmeter with zero checking feature |
| 03/06/2013 | EP2564170A2 Ultrasonic flow meter |
| 03/06/2013 | CN202770509U Oscillating quantity detecting device of counter adjusting gear |
| 02/28/2013 | WO2012158596A3 Systems and methods for remote testing of a flow switch |
| 02/28/2013 | US20130047695 Ultrasonic Flow Meter |
| 02/27/2013 | CN202757953U Tester for automobile instrument |
| 02/27/2013 | CN102944293A Grating type passive piston volume tube |
| 02/27/2013 | CN102944292A Car air quality flow meter calibration device and calibration method |
| 02/27/2013 | CN102944291A Device for testing wear of a plurality of water meters and water circulation method of device for testing wear of a plurality of water meters |
| 02/27/2013 | CN102944290A Impurity filtering device for water meter calibration console |
| 02/27/2013 | CN102944289A Detection device for liquid level switch of dejecta collecting device |
| 02/27/2013 | CN102944278A Intelligent air quality flowmeter for automobile |
| 02/27/2013 | CN102944277A Intelligent air quality flowmeter for automobile |
| 02/26/2013 | US8381755 Pressure type flow rate control reference and corrosion resistant pressure type flow rate controller used for the same |
| 02/26/2013 | CA2587175C Method and apparatus for determining flow pressure using density information |
| 02/20/2013 | CN202748108U Liquid reversing device of flow measurement standard system |
| 02/20/2013 | CN202748067U Water tank for testing flow rate of water meter by weighing method |
| 02/20/2013 | CN202748066U Gas flowmeter |
| 02/20/2013 | CN102937527A Calibrator used for detecting measurement accuracy of fuel consumption of engine pedestal |
| 02/19/2013 | US8378780 Connected sensor system, network unit, and sensor unit |
| 02/14/2013 | WO2013022695A1 Methods and apparatus for level loop control |
| 02/14/2013 | US20130041611 Method of and system for calibrating gas flow dilutors |
| 02/14/2013 | US20130041570 Fault diagnosis apparatus for airflow meter |
| 02/14/2013 | US20130036788 Fault diagnosis apparatus for airflow meter |
| 02/14/2013 | CA2843209A1 Methods and apparatus for level loop control |
| 02/13/2013 | CN202734887U Intelligent flow instrument with non-contact control |
| 02/13/2013 | CN202734835U Wave/tide testing and verifying system device |
| 02/13/2013 | CN102928172A System and method capable of extending lower limit of gas micro-flow calibration to 10<-14> Pam<3>/s |
| 02/13/2013 | CN102928054A Detection device for gas meter with temperature compensation function and detection method of device |
| 02/13/2013 | CN102928053A Device for calibrating natural gas on line |
| 02/13/2013 | CN101979968B Device and method for testing air quality sensor and air flow sensor |
| 02/07/2013 | WO2013018020A1 A multiphase flowmeter and a correction method for such a multiphase flowmeter |
| 02/07/2013 | WO2013017876A1 An aid in validating flow measurement equipment |
| 02/07/2013 | WO2013017405A1 Method for detecting a deposit formation or an abrasion in a flow meter |
| 02/07/2013 | DE102011080415A1 Verfahren zum Detektieren einer Belagsbildung oder einer Abrasion in einem Durchflussmessgerät Method for detecting fouling or abrasion in a flow meter |
| 02/07/2013 | DE102011052352A1 Kraftstofffüllstandsmessvorrichtung Fuel level measuring device |
| 02/06/2013 | CN202720030U Pneumatic meter clamping device of high pressure water injection meter |
| 02/06/2013 | CN202720029U Calibrating device of small-bore high-pressure water meter for oil and gas exploitation in oil field |
| 02/06/2013 | CN202720028U Detecting device for high-pressure water meter |
| 02/06/2013 | CN202720027U Handcuff type meter clamping device for high pressure jet water meter |
| 02/06/2013 | CN202720026U Glass receiver connecting device |
| 02/06/2013 | CN102914349A Water meter verification device and method |
| 02/06/2013 | CN102914347A Liquid level sensor having self-calibration function and sensing method thereof |
| 02/06/2013 | CN102914343A Non-contact type single-point liquid metal liquid level measurement device |
| 02/06/2013 | CN102305656B Liquid level indicating system and contact resistance washing circuit |
| 02/05/2013 | US8370089 Method and equipment for determining the interface between two or more fluid phases |
| 02/05/2013 | US8366690 System and method for determining a fill status of a canister of fluid in a reduced pressure treatment system |
| 02/05/2013 | US8365574 Systems and methods for minimizing stray current in capacitive sensor data |
| 01/31/2013 | WO2013014130A1 Tracking of the flow rate in a closed hydraulic conduit |
| 01/31/2013 | US20130030748 Method for determining a dosed, or metered, volume of an automatic peristaltic sample taker |
| 01/31/2013 | DE102011079927A1 Verfahren zur Bestimmung eines Dosiervolumens eines automatischen Peristaltik-Probenehmers A method of determining a metering volume of a peristaltic automatic sampler |
| 01/30/2013 | EP2551650A1 Calibration Method |
| 01/30/2013 | EP2551648A1 A multiphase flowmeter and a correction method for such a multiphase flowmeter |
| 01/30/2013 | CN202710144U Device for testing sensitivity of dry water meter movement |
| 01/30/2013 | CN102901548A Method for determining a dosed, or metered, volume of an automatic peristaltic sample taker |
| 01/30/2013 | CN102901546A Tuning fork type sensing device |
| 01/30/2013 | CN102353428B Detection device for metrological characteristics of water meter and detection method for using same |
| 01/24/2013 | WO2012099777A3 Apparatus and method for determing displacer position in a flowmeter prover |
| 01/23/2013 | CN202693089U Device for detecting sound velocity of ultrasonic flowmeter on site |
| 01/23/2013 | CN102889915A Flowmeter and calorimeter asynchronous metering and detecting method and flowmeter and calorimeter asynchronous metering and detecting system based on communication |
| 01/23/2013 | CN102252736B Constant-pressure liquid source device containing overflow groove in pressure container |
| 01/16/2013 | EP2546562A2 Method for precisely and reliably controlling liquid level of pressure tank with multiple sensors |
| 01/16/2013 | CN202676254U Quality test device of LABVIEW-based electric resistance type oil level sensor |
| 01/16/2013 | CN202676253U Automatic marking apparatus of wet flow meter |
| 01/16/2013 | CN202676252U Standard metal measurement device for novel verification refueling plane of dual-layer construction internal-clamping insulation layer |
| 01/16/2013 | CN202676251U Detecting tooling for initiating flow of water meter |
| 01/16/2013 | CN202676250U Standard flowmeter |
| 01/16/2013 | CN202676249U An auxiliary measurement device for a displacement balance-type float level meter |
| 01/16/2013 | CN202676177U Automobile instrument detector |
| 01/16/2013 | CN102879237A Constant flow sampler and flow calibration method thereof |
| 01/16/2013 | CN102879062A Multi-plunger parallel type liquid micro flow rate standard device |
| 01/16/2013 | CN102879061A Water gauge error correction method based on fitted equation |
| 01/16/2013 | CN102879060A Delay detection calibrating device for ultrasonic flowmeter |
| 01/16/2013 | CN102879046A Water tank used in weighing method for testing flow rates of water meters |
| 01/16/2013 | CN102879041A Impeller type wide range electronic water gauge and calibrating method thereof |
| 01/16/2013 | CN101551675B Flow controller and test method therefor, and flow control method |
| 01/15/2013 | CA2586575C Compensation method and apparatus for a coriolis flow meter |
| 01/10/2013 | WO2013006090A1 The calibration method, applied in operating conditions, for ultrasonic flow meters used for measuring volume and flow rate of single-phase liquid media |
| 01/10/2013 | US20130008225 System for measuring fluid flow velocity |
| 01/09/2013 | CN202661140U Error curve adjusting mechanism of gas meter |
| 01/09/2013 | CN202661139U Gas small-flow standard device |
| 01/09/2013 | CN202661138U Miniature piston-type normal flow device |
| 01/09/2013 | CN102869959A 超声波流量计 Ultrasonic flowmeter |
| 01/09/2013 | CN102865910A Device for detecting oscillating quantity of adjusting gear of counter |
| 01/09/2013 | CN102865909A Detection circuit for motormeter |
| 01/08/2013 | CA2581107C In-flow determination of left and right eigenvectors in a coriolis flowmeter |
| 01/03/2013 | WO2013002759A1 Vibratory flow meter and zero check method |
| 01/03/2013 | WO2013001495A1 Device for checking the calibration of catching instruments measuring rainfall intensity |