从控制方法上看，电器控制系统控制逻辑采用硬件接线，利用继电器机械触点的串联或并联等组合成控制逻辑，其连线多且复杂、体积大、功耗大，系统构成后，想再改变或增加功能较为困难。另外，继电器的触点数量有限，所以电器控制系统的灵活性和可扩展性受到很大限制。而PLC采用了计算机技术，其控制逻辑是以程序的方式存放在存储器中，要改变控制逻辑只需改变程序，因而很容易改变或增加系统功能。系统连线少、体积小、功耗小，而且PLC所谓“软继电器”实质上是存储器单元的状态，所以“软继电器”的触点数量是无限的，PLC系统的灵活性和可扩展性好。

如果您发现其他供货商为相同产品提供更为低廉的价格，

我们也愿意参照其价格向您提供进 步的折扣。只要您诚心购买，

如果还有其他任何问题，请随时与我们联系。

我们的使命是帮助你：

降低维护成本!

我们有大量库存的控制系统部件。 我们还有许多新的硬件和停产备件，以帮助支持你现有的控制系统。

您或许会在我们的资料中找到您需要的备品备件，在任何时间，我们都欢迎您对我们产品提出宝贵的建议。

  联系人：林工
  电话：0591-22983857 ；手机：17705012279
  e-mail：zkdzwg@163.com
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SIMPSON ANALOG METER 02690

SIMPSON FALCON, F-35, DIGITAL PANEL METER

SINGLE PHASE FIXED ROTATION PUMP 1HP 115/230V

SITI GEAR BOX MU 90 17 30/1 RATIO

SJE-RHOMBUS 1002155 SENSOR FLOAT CONTROL SWITCH 15FT

SJE-RHOMBUS 1002155 SENSOR FLOAT CONTROL SWITCH 15FT

SK INSTRUMENTS M75 50633 ROTAMETER

SK10062A-6 LOW PRESSURE UNIT 0/25PSI

SKF 3213 DOUBLE ROW BALL BEARING

SKF 5207 A BF01 DOUBLE ROW BALL BEARING

SKF 5207 A BF01 DOUBLE ROW BALL BEARING

SKF 5208 ENR DOUBLE ROW BALL BEARING

SKF 5308 E-Z/3308 E-Z DOUBLE ROW BALL BEARING

SKF 5308 E-Z/3308 E-Z DOUBLE ROW BALL BEARING

SKF 6001-2RSJEM SINGLE ROW BEARINGS LOT OF 6

SKF 6003-2RSH/C3 BEARING SINGLE ROW DEEP GROOVE  LOT OF 5

SKF 6012-2RS1/GJN BEARING

SKF 6016-2Z/C3GJN BEARING

SKF 6016-2Z/C3GJN BEARING

SKF 6016-2Z/GJN BEARING

SKF BEARING PILLOW BLOCK 204-125/UC-204-012D

SKF DOUBLE ROW BALL BEARING 4202 ATN9  OTHER

SKF EXPLORER BALL BEARING 6214-2RS1

SKF FYJ514, 4 BOLT FLANGE BEARING

SKF FYR HEAVY DUTY SPHERICAL BEARING FLANGE UNIT, 4 BOLT

SKF PCJ 30 BALL BEARING

SKF PCJ 30 BALL BEARING

SKF ROLLER BEARING 6013-2RS1/C3

SKF ROLLER BEARING 6013-2RS1/C3

SKF ROLLER BEARING 6013-2RS1/C3 *NIB*

SKF SF45EC BEARING FLANGED UNIT SQUARE CAST HOUSING

SKF SNL 511-609 PILLOW BLOCK HOUSING

SKF USA INC. 61856 MA, 280MM BRE 350MM OD, 33MM WIDTH, OPEN

SKID W/ BELL & GOSSET PUMP HEAD BFESSW12.625 175 MAX PSI

SKINNER DIRECTIONAL CONTROL VALVE VALVE#S4KKCDL3 VOLTS 120/60 WATTS 9

SKINNER ELECTRIC VALVE DIVISION 4 WAY VALVE V935LEH2075 75PSI

SKINNER FLOW CONTROL SOLENOID VALVE 71315SN2ENJ1N0H111P 250 PSI 120V

SKINNER VALVE A3LB2127 120V/60HZ 110V/50HZ 16 WATTS

SKINNER VALVE A3LB2127 120V/60HZ 110V/50HZ 16 WATTS

SKINNER VALVE BY HONEYWELL 73212BN3SN00

SKINNER VALVE DIVISION HONEYWELL INC. V935LB2075 75PSI 3/32" 1/8" ORIFICES

SKINNER VALVE DIVISION V985LB2050 50 PSI 120/60V

SLAUTTERBACK ET4 PATTERN CONTROLLER 120 V

SMC 3/8" REGULATOR WATER TRAP 110805 215475 0005, 60 PSI

SMC 3WAY VALVE LOCK OUT NVHS5500, 14.2~145PSI, 0.1~1.0MPA

SMC AIR VALVE NVA4114-0009D 120V MAX PRESS. 150PSI

SMC AIR VALVE NVFS2110-5DZB

SMC AIR VALVE NVS4114-0009D 120V MAX PRESSURE 150 PSI

SMC AW20-N02-CZ-X2014 REGULATOR,FLOW LOT OF 2

SMC AW30-N03BG-Z-Z64 FILTER REGULATOR MODULAR **

SMC C95SB32-25 CYLINDER

SMC C95SB32-25 PNEUMATIC CYLINDER

SMC C95SB32-25 PNEUMATIC CYLINDER

SMC CA1WTN63 U1A991155 DUAL PNEUMATIC CYLINDER

SMC CYLINDER C95SDB32-100 4" STROKE

SMC DIRECTIONAL AIR VALVE NVS 3115-0209 110/50

SMC ID TECHNOLOGY, PNEUMATIC MODULE,62104, 62105, 62100

SMC ITV2030-03N2CN4 ELECTRO PNEUMATIC REGULATOR

SMC ITV2030-03N2CN4 ELECTRO PNEUMATIC REGULATOR

SMC MHL2-32D1 PARALLEL PNEUMATIC GRIPPER

SMC NAV2000-N02-9GS START UP VALVE

SMC NCDA1B200-0500 PNEUMATIC CYLINDER

SMC NCDA1X200-1600-XBS AIR CYLINDER MAX 250PSI (1.7MPA)

SMC NCDA1X200-1600-XBS AIR CYLINDER MAX 250PSI (1.7MPA)

SMC NCDME150-1450-B54L PNUEMATIC CYLINDER MAX PRESS 250PSI 14 1/2" STROKE

SMC NCGKLKN40-0050 PNEUMATIC CYLINDER 145PSI

SMC NVFS3400-3FZ SOLENOID VALVE132/138V 50/60HZ

SMC NVFS3400-3FZ SOLENOID VALVE132/138V 50/60HZ

SMC NVS3115-0209D VALVE SOL 110VAC

SMC NVS3115-82520P PNEUMATIC SOLENOID VALVE 150PSI 24VDC

SMC PNEUMATIC CYLINDER CBA1D40H-L5174-50

SMC PNEUMATIC CYLINDER NCDA1B200-0800 250 MAX PSI

SMC PNEUMATIC CYLINDER NCDA1B200-0800 250 MAX PSI

SMC PNEUMATIC CYLINDER NCDA1B200-1200-XB5

SMC PNEUMATIC CYLINDER NCGCN50-1800 18" STROKE 1" SHAFT

SMC PNEUMATIC CYLINDER NCGCN50-1800 18" STROKE 1" SHAFT

SMC PNEUMATIC CYLINDER NDA1 B200-0800 250 MAX PSI 2" BORE 8" STROKE

SMC PNEUMATIC CYLINDER NDA1 B200-0800 250 MAX PSI 2" BORE 8" STROKE

SMC PNEUMATIC DOUBLE ACTING CYLINDERC G5EN100TNSR-125 145PSI

SMC PNEUMATIC SOLENOID VALVE, SY5140-5DZE LOT OF 4 **

SMC PNEUMATICS ITV3050-33F4BN3 ***NIB*** FACTORY SEAL***

SMC PNEUMATICS ITV3050-33F4BN3 ***NIB*** FACTORY SEAL***

SMC PRESSURE SWITCH ISE30-T1-65

SMC REGULATOR AR20-N01H-Z LOT OF 4

SMC S.S.C. VALVE NASS500 100PSI

SMC SFC982937 MANIFOLD BASE PLUG-IN 8 STATION **

SMC SOL VALVE VQ4301-5

SMC SOLENOID VALVE LOT OF 13 NVZ3120 W/ SOLENOID BLOCK