Patents for G01D 18 - Testing or calibrating apparatus or arrangements provided for in groups (5,294)
09/1994
09/21/1994EP0616197A1 Calibration method for measuring devices and measuring device with control unit for carrying out this method
09/20/1994US5347841 Self-testing transducer curcuit
09/13/1994US5347476 Instrumentation system with multiple sensor modules
09/07/1994EP0541573B1 Measurement value sensor
09/01/1994WO1994019920A1 Method and apparatus for precisely measuring accelerating voltages applied to x-ray sources
08/1994
08/30/1994US5341702 Apparatus for calibration of an angular displacement
08/30/1994US5341689 Pen force gage for a pen plotter
07/1994
07/21/1994DE4301113A1 Calibrating sensor for measurement of solid content of solid-liquid mixtures and determining mixture material properties
07/13/1994EP0606115A1 Detector having self-calibration function
06/1994
06/28/1994US5325339 Absolute calibration technique for broadband ultrasonic transducers
06/09/1994WO1994012940A1 Instrumentation system with multiple sensor modules
06/09/1994CA2149632A1 Instrumentation system with multiple sensor modules
05/1994
05/10/1994US5309759 For testing an accelerator pedal sensor
05/05/1994DE4334060A1 Determining position parameters of measurement position - detecting displacement of image of scattered laser beam on detectorusing triangulation principle
04/1994
04/28/1994DE4235880A1 Vehicle variable parameter detection method - involves comparison of signal values on two or more signal lines to detect short circuits
04/27/1994EP0594483A1 Process and device for measuring a physical parameter, especially the temperature in a room or vehicle
04/14/1994WO1994008225A1 Spectroscopic instrument calibration
04/14/1994CA2146342A1 Spectroscopic instrument calibration
04/12/1994US5302823 In an electrooptical apparatus
03/1994
03/31/1994DE4232719A1 Vibration fill-level limit switch - has level measurement device connected to remote evaluation circuit, and performs regular functional test cycles
03/22/1994US5297065 Magnetic transient detection and calibration technique for an auto-calibrating compass
03/22/1994US5297063 Method for selecting calibration data for an auto-calibrating compass
03/15/1994US5295176 Method and apparatus for precisely measuring accelerating voltages applied to x-ray sources
03/15/1994US5294890 Examination circuit for a sensor
03/08/1994US5293137 Digital transducer system including two reactive transducers forming resonant oscillator circuits
02/1994
02/17/1994DE4226813A1 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
02/15/1994CA1327067C Modular switch device
02/10/1994DE4324197A1 Arrangement for analogue=to=digital conversion and serial measurement value transfer - contains evaluation unit, signal processing circuit, ADC, monostable timer, control circuit and line couplers
01/1994
01/19/1994EP0487681B1 Method for measurement of angular displacement
01/13/1994DE4321589A1 Fault monitoring system for motor vehicle occupant restraint airbag system - generates fault signal when signals from both reset and state signal generators, at ignition and connection of battery, are received
01/05/1994EP0390886B1 Setting up of quadrature signals
01/05/1994DE4221848A1 Automatic in situ calibration of in vivo glucose sensors - by comparing measured value with reference signal from independent model, calculating quality control values and correcting sensor signal if these exceed specified limits
01/05/1994DE4221186A1 Indirect determination of control system supply and reference voltages for motor vehicle steering column e.g. for fault recognition - using coarse potentiometer working over whole rotation of shaft, and two fine potentiometers, and using max. signal to determine supply voltage and min. signal to determine reference voltage.
12/1993
12/29/1993EP0575979A1 Remote addressable transducer with automatic calibration and digital compensation
12/28/1993US5274578 Circuit and method for normalizing detector circuit
12/28/1993US5274334 Calibrated physical parameter value measurement system
12/09/1993WO1993024992A1 Digital transducer system
12/08/1993EP0447515B1 Device for the analog triggering of a digital adjustment process
12/02/1993DE4218022A1 Temperature measurement signal monitoring appts. - has two two=way switches or relays in series between transducer or calibration source and evaluation unit
11/1993
11/24/1993CN2147512Y Pointer instrument precision measurer
11/24/1993CN2147511Y Digital display meter head measurer
11/23/1993CA1324687C Method and system for transferring calibration data between calibrated measurement instruments
11/18/1993EP0569924A1 Method and device for monitoring a sensor
11/18/1993DE4215671A1 Measuring sensor parameter-dependent impedance change e.g. for inductive path sensor - using calibration mode, in which start time is measured, after which signal reaches measurement region, and converting each signal to digital value when value at start of measurement region is exceeded.
11/11/1993WO1993022656A1 Colorimetric measurement device
11/11/1993WO1993022625A1 Method for fast kalman filtering in large dynamic systems
11/03/1993EP0568390A1 Battery charge monitoring
10/1993
10/28/1993WO1993021505A1 Self-validating sensors
10/28/1993DE4313076A1 Laser interferometer for length and direction of movement measurement
10/14/1993DE4309989A1 Temp. telemetering device using constant current pulses - includes evaluation unit with controllable switch for producing synchronisation pulse detectable by each remote sensing unit
10/12/1993US5251631 Ultrasonic imaging apparatus
09/1993
09/08/1993EP0559306A1 Circuit for zeroing and sensitivity adjustment of an analog signal in measuring equipment
09/01/1993EP0557564A1 Mounting device for an angular position encoder
08/1993
08/31/1993US5241173 Readhead for producing signals when travelling along a scale having a set-up detector for detecting alignment of quadrature signals
08/25/1993EP0556371A1 Method and apparatus for calibration of an angular interferometer.
08/24/1993US5237851 Device for the analog actuation of a digital setting operation
08/17/1993US5237390 Method and apparatus for measurement of angular displacement
07/1993
07/14/1993EP0470140B1 Apparatus and method for calibrating a sensor system
06/1993
06/24/1993WO1993012434A1 Rpm sensor, in particular for a gearwheel
06/24/1993DE4141958A1 Drehzahlsensor, insbesondere zahnradsensor Speed ​​sensor, in particular gear sensor
06/23/1993CN2136974Y Operating test meter for automatic balance display record instrument
05/1993
05/26/1993EP0542943A1 Test circuit for a sensor
05/05/1993CN1071751A Correction method for measuring values
05/04/1993US5207087 Sensor calibrator and test apparatus
04/1993
04/15/1993WO1993007601A1 Calibration system for measurement instruments
04/15/1993DE4133426A1 Capacitive sensor circuit providing measurement and function test - has dual mode operation with bridge measurement and separate test voltage for checking functional performance via reference capacitor
03/1993
03/18/1993WO1993005360A1 Method and apparatus for calibration of an angular interferometer
03/02/1993US5189901 Densitometer calibration apparatus and method
02/1993
02/18/1993WO1993003331A1 Method for assembling and calibrating a transducer
01/1993
01/21/1993DE4124042A1 Identification device for measurement transducer in large measurement system - has identification signal generator which produces signals from stored identities and clock signal
01/21/1993DE4124041A1 Identification device for measurement transducer in large measurement system - has identification signal generator which produces signals from stored identities and clock signal
01/14/1993DE4122635A1 Einrichtung zur defekterkennung bei sensoren Means for defect detection in sensors
12/1992
12/29/1992US5174884 Piezoelectricity; detecting physical quantity
12/29/1992US5174425 Steering angle detecting device for a motor vehicle
12/15/1992US5171982 Display device with photoelectric sensing of unevenly spaced marks on a coding disk
12/15/1992US5170549 Process and arrangement for manufacturing a measurement device for measuring pressure or temperature
12/10/1992WO1992021985A1 Test circuit for a sensor
12/10/1992DE4118718A1 Pruefschaltung fuer einen sensor Test circuit for a sensor
11/1992
11/25/1992EP0514634A1 Process for correcting measurement errors
11/19/1992EP0514081A1 Setting up of quadrature signals
11/18/1992CN2122376U Integral checking gauge
11/12/1992DE4115288A1 Balancing arrangement for signals from e.g. combustion oximeter - uses fixed and adjustable resistors having good thermal coupling and equal and opposite dependence on temp.
11/12/1992DE4114814A1 Function testing device for container filling level indicator - uses test vol of filling material displaced into contact with level indicator
11/10/1992US5161405 Clutch pedal positon sensor continuous calibration
10/1992
10/29/1992WO1992018832A1 Apparatus and method of calibrating a sensor probe
09/1992
09/22/1992USRE34070 Method and system for transferring calibration data between calibrated measurement instruments
09/17/1992WO1992015768A1 Method of checking that an oil well safety valve is operating correctly
09/15/1992US5148378 Sensor controller system
09/15/1992US5146776 Method for continuously calibrating an optical vibration sensor
09/01/1992US5142897 Height adjustment in a vehicle fitted with air suspension
08/1992
08/19/1992EP0380552B1 An electronic controller unit
08/11/1992US5138564 Automatic encoder calibration
07/1992
07/22/1992EP0366749B1 A transducer monitoring arrangement
07/14/1992US5130727 Feedback scheme for ionographic calibration
07/07/1992US5128609 Setting up of quadrature signals
06/1992
06/16/1992US5122661 Method and apparatus for testing infrared radiation detectors
06/11/1992WO1992009974A1 Method and apparatus for testing lcd panel array prior to shorting bar removal
06/09/1992US5121064 Method and apparatus for calibrating resistance bridge-type transducers
06/09/1992US5120943 Method of and apparatus for setting a measuring instrument
06/03/1992EP0487681A1 Method for measurement of angular displacement.
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