PF

ELECTRICAL APPARATUS AND INSTRUMENTS FOR MONITORING, MEASURING, SIGNALLING, REGULATING, CONTROLLING, SWITCHING, COUNTING AND POWER SUPPLY, NAMELY -- PROXIMITY SENSORS; INDUCTIVE SENSORS; CAPACITIVE SENSORS; PROGRAMMABLE CONTROLLERS; POSITIONING CONTROLLERS; TIMING CONTROLLERS; TRANSISTOR RELAYS; TRANSISTORIZED SWITCHES; AMPLIFIERS; SPEED MEASURING, MONITORING AND DIRECTION SENSORS WITH PRE-SELECTION AND PRELIMINARY SIGNALS; FREQUENCY DIVIDERS; IMPULSE DIVIDERS; IMPULSE ADDERS; TEMPERATURE CONTROLS; D.C. CURRENT SUPPLIES; ISOLATION AMPLIFIERS; CONTROL CIRCUITS; COUPLING ELEMENTS FOR D.C. AND A.C. VOLTAGE; SHUNT ZENER DIODE SAFETY BARRIERS; TRANSFORMER ISOLATED BARRIERS; ALARM ANNUNCIATORS; STATE INDICATORS; COUNTERS; TIMERS; RACK MOUNTED CARD FRAMES; COUNTERS WITH PRE-SELECTION AND PRELIMINARY SIGNALS; FORWARD/BACKWARD COUNTERS; ROTARY PULSE GENERATORS AND PHOTO SWITCHES