75668877
Mar 25, 1999
LIQUID LEVEL CONTROLLERS COMPRISED OF A PROGRAMMABLE CONTROL UNIT, LIQUID LEVEL TRANSDUCER, DISPLAY, KEYPAD AND RELAYS ALL MOUNTED IN AN ENCLOSURE; RELAYS, ELECTRODES, ELECTRODE HOLDERS, ELECTRODE ASSEMBLIES, FLOAT SWITCHES, CONTROL PANELS, SIGNAL AND ALARM PANELS, SEQUENCERS, FIXED SEQUENCE CONTROLS, STARTER RELAY COMBINATIONS, ALTERNATOR CONTROLS, HYDROPNEUMATIC TANK CONTROLS, SOLENOIDS, TRANSDUCERS, SIGNAL TRANSMITTERS, AND MONITORS; GAUGING SYSTEMS, COMPRISED OF A PROCESSOR, DISPLAY, KEYPAD, PRINTER, COMMUNICATIONS INTERFACE, TEMPERATURE SENSOR ALL MOUNTED IN AN ENCLOSURE; LONG DISTANCE REMOTE CONTROL SYSTEMS, COMPRISED OF RELAYS AND REMOTE TELEPHONE CONTROL CIRCUIT ALL MOUNTED IN AN ENCLOSURE; ALARM SYSTEMS, COMPRISED OF SENSORS, SWITCHES, ACTUATORS, ELECTRODES AND ALARM, ALL MOUNTED IN AN ENCLOSURE
Electrical and Scientific Apparatus