集散控制系统简称DCS,也可直译为“分散控制系统”或“分布式计算机控制系统”。它采用控制分散、操作和管理集中的基本设计思想,采用多层分级、合作自治的结构形式。其主要特征是它的集中管理和分散控制。目前DCS在电力、冶金、石化等各行各业都获得了极其广泛的应用。
DCS通常采用分级递阶结构,如图所示,每一级由若干子系统组成,每一个子系统实现若干特定的有限目标,形成金字塔结构。THOMAS AND BETTS, 6H2, GALVANIZED STEEL HANGERS, 1 R, 1
PARKER 3251-0373, FLOW CONTROL VALVE, 3/8" NPT, 125 PSI
ASCO EF8342C20, SOLENOID VALVE, 125 PSI, 1/4" NPT, 15.4

WARNER ELECTRIC 540-0015, ARMATURE HUB, 6 7/8" OD, 3" W
GOODYEAR FALCON HTC 14GTR-2520-37 SYNCHRONOUS BELT,
BLUE-WHITE F-41000LN-16 1" NPT ADAPTER 2-20 GPM FLOWMET
BLUE-WHITE F-40750LN-12 FLOWMETER, 3/4" NPT, 0-10 GPM (
DANIEL WOODHEAD 4206 SAFEWAY PENDANT, NIB
GENERAL ELECTRIC MPB17M0AXQ BALLAST HOUSING, NIB
SUN HYDRAULICS FEL 0KL1-A2 VALVE BLOCK, 3/4" 1/2" AND 1
SMC NAR925-N20 7-120 PSI 2" NPT PNEUMATIC REGULATOR, NN
CRANE 1?" BRONZE RISING STEM GLOBE VALVE,
CLAROSTAT RV4LAYSA104A, SENSOR CONTROL, 100K, LOT OF 10
PILZ PZE524VDC4S1O / 474910141718 SAFETY MODULE, EXPAND
SQUARE D 34050-S1121, BREAKER, 240/480 VAC, 50 AMP