描述
隨著半導體技術,尤其是微處理器和微型計算機技術的發(fā)展,到70年代中期以后,PLC已廣泛地使用微處理器作為中央處理器,輸入輸出模塊和外圍電路也都采用了中、大規(guī)模甚至超大規(guī)模的集成電路,這時的PLC已不再是邏輯判斷功能,還同時具有數(shù)據(jù)處理、PID調節(jié)和數(shù)據(jù)通信功能。
PARKER A1 CONSTANT PRESSURE EXPANSION VALVE
PARKER PNEUMATIC PRESSURE REGULATOR 3/8″ Ports 06R213AC
Expedited shipping available
PARKER PRESSURE FLOW CONTROL # PCK1020S-11
PARKER CONVUM DIGITAL PRESSURE SENSOR MPS-P32N-PG
PARKER PRESSURE REGULATOR
Parker-Finite Pneumatic pressure regulator F06R313AC
PARKER ASIC PERFORMER PRESSURE TRANSDUCER TRANSMITTER
PARKER ASIC PERFORMER PRESSURE TRANSDUCER T