描述
PLC在早期只是用来存储执行逻辑运算、顺序控制、定时、计数和运算等操作的指令;并通过数字输入和输出操作,来控制各类机械或生产过程。这种特性导致他一般用于较小的自控场所,且拓展性并不强。
Parker Flo-Con Pressure Regulator A7-A
PARKER FP2AUS14 250 PRESSURE 1.000 STROKES AIR
PARKER H2 1/2″ SAFETY PRESSURE RELIEF VALVE REFRIGERANT
Parker 73212BN52N00 3/4″ Skinner Pressure Vessel 2-Way
PARKER REMOTE PRESSURE VALVE CC1225B 150 PSI DO 1/4″
Parker Veriflo IR4205 Stainless High Pressure Regulator
PARKER 1/4 NPT CONTROLLED PRESSURE SAFETY THUMB LEVER
Parker Veriflo 1/4″ Pressure Regulator (SQ2MICRO130E60)
Parker Pressure Regulator 72-130
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