73803150
May 30, 1989
Oct 23, 1990
COMPUTER BASED CONTROLS AND INSTRUMENTS COMPRISING DIFFERENTIAL PRESSURE TRANSMITTERS, LEVEL TRANSMITTERS, TEMPERATURE TRANSMITTERS, VORTEX METERS, MAGNETIC METERS, CORIOLIS MASS FLOW METERS, CONTROLLERS AND RECORDERS FOR SENSING AND MANAGING INDUSTRIAL PROCESS VARIABLES SUCH AS TEMPERATURE, PRESSURE, LIQUID LEVEL, FLOW AND COMPOSITION OF MATERIALS
Electrical and Scientific Apparatus