(under subclass 85) Subject matter comprising means to calibrate or correct fluid or fluid flow measuring instrument or signal representing such measurement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12+, for fluid investigation in earth formation of a well logging or borehole measurement system.
45+, for flow metering.
50+, for fluid measurement.
114, for testing of a pneumatic or hydraulic system.
SEE OR SEARCH CLASS 73, Measuring and Testing,
1.16+, for instrument proving or calibrating of volume or flow, speed of flow, volume rate of flow, or mass rate of flow, subclasses 1.57+for fluid pressure instrument proving or calibrating with signal correction or processing, and subclasses 1.73+ for calibration of a liquid level and volume measuring device.
364, Electrical Computers and Data Processing Systems,
528.16, for control of fluid level or volume, and subclasses 528.17+ for flow control.
