INSTRUMENTATION SYSTEMS CONSISTING OF ANALYZERS AND SENSORS FOR INDICATING AND TRANSMITTING TURBIDITY, PH, CONDUCTIVITY, OXYGEN CONTENT, TEMPERATURE, CHLORINE, PRESSURE, LEVEL, WEIGHT AND FLOW IN LIQUID OR GAS MEDIA; ELECTRONIC APPARATUS, NAMELY, AC AND DC VARIABLE SPEED RIVES FOR CONTROL OF MOTOR DRIVEN EQUIPMENT FOR PUMPING LIQUID AND MOVING GAS MEDIA; ELECTRONIC SYSTEMS FOR THE CONTROL OF TURBIDITY, PH, CONDUCTIVITY, OXYGEN CONTENT, TEMPERATURE, CHLORINE, PRESSURE, LEVEL, WEIGHT AND FLOW I...

ENGINEERING, DESIGNING AND PRODUCING ENVIRONMENTAL CONTROL SYSTEMS AND ASSOCIATED SOFTWARE FOR OTHERS