74295077
Jul 17, 1992
Dec 7, 1993
motion sensors, speed switches, differential speed detectors and non-contacting tachometers, and probes, control units and printed circuit boards therefor; A.C. watt, amp, volt and vars transducers; tilt switch probes; contact sensors; initiating level switches; elevator leg monitors; grinding controls; sound sensors and audio signal converters; process control consoles; process control computers; ultrasonic level measuring units; ultrasonic transducers; circuit boards for ultrasonic level measuring units; monitors and control consoles for ultrasonic level measuring systems, display and alarm modules and scanners for level measuring units; distance simulators; pump control modules; temperature compensation sensors; belt scales and weigh feeders, and integrators and calibrators, test chains, test chain storage reels, scale controls and load cell indicators therefor; impact scale; impact flowmeters; impact scale amplifiers; open channel metering units; and data acquisition systems comprising sensors and data processing
Electrical and Scientific Apparatus