ABBBP910S 3KDE175831L9100

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　　影响PLC控制系统的干扰源于一般影响工业控制设备的干扰源一样，大都产生在电流或电压剧烈变化的部位，这些电荷剧烈移动的部位就是噪声源，即干扰源。

　　干扰类型通常按干扰产生的原因、噪声的干扰模式和噪声的波形性质的不同划分。其中：按噪声产生的原因不同，分为放电噪声、浪涌噪声、高频振荡噪声等；按噪声的波形、性质不同，分为持续噪声、偶发噪声等；按声音干扰模式不同，分为共模干扰和差模干扰。共模干扰和差模干扰是一种比较常用的分类方法。共模干扰是信号对地面的电位差，主要由电网串入、地电位差及空间电磁辐射在信号线上感应的共态（同方向）电压送加所形成。共模电压有时较大，特别是采用隔离性能差的电器供电室，变送器输出信号的共模电压普遍较高，有的可高达130V以上。共模电压通过不对称电路可转换成差模电压，直接影响测控信号，造成元器件损坏（这就是一些系统I/O模件损坏率较高的原因），这种共模干扰可为直流、亦可为交流。差模干扰是指用于信号两极间得干扰电压，主要由空间电磁场在信号间耦合感应及由不平衡电路转换共模干扰所形成的电压，这种让直接叠加在信号上，直接影响测量与控制精度。


Garlock 127-AFP, 41127-2028

Garlock 127-AFP, 41127-2032

Garlock PP-5000-C, 41822-2032

Garlock Paperpak 5000 41801-2036 9/16" (14mm), 5.3lb

Garlock PP-5000-C, 41822-2016 Packing, 1/4" ) 6.4mm)

Neundorfer 84700-250A

Bently Nevada 3300/03

Foxboro P0914XA, Modular

Bently Nevada 21747-045-00 Cable

Safematic SE1-T-1.969-QREO For Alstrom APT3

Safematic SB2-3.000-QRMN-301916 Seal for Bingham CF C15

Measurex 08562102 GP63

Foxboro P0903QF Fibre

Allen-Bradley CE278-R Coil

Onan 300-2899 TD Start

Phoenix Contact Omnex RAD-ISM-900-TX

Westinghouse 722C548L02, 150:5A, 600V

Allen-Bradley 173169 Board,173168

John Crane Safematic SE1-AP-3.150-QREO-305332

Allen-Bradley 802PR-XAAB1 Self

Allen-Bradley 142129 Board,135230

Allen-Bradley 115832, 112998 REV 13

John Crane Safematic SEW-T-1.969-QREV-30404









CTC AC108-1A Accelerometer

Allen Bradley Size 5 Vacuum Coil, 40758-800-01

Positron 751317 Plug-in

SKF PBM05180080

Motorola PM400 UHF Radio

Taylor Tool M55x2 Hand Tap

Yaskawa 73600-A0151Controller

SKF NJ 212 ECJ Roller

Fisher 67CFR-600 Pressure Regulator, 1/4" NPT, 0-60psi

RHP MSF2.7/16G Flange Block Bearing, 2-7/16

Richard J Piper No.3 Reversible Capacity 3/8"-3/4"

Honeywell Micro Switch 1LS243 Limit

Foxboro 8002-WCR-AG2" Magnetic

Kone P16835 Power Supply, B-47624 Rev 7

Fisher 22A8920X012 Seal Ring, 12"

Package of 3 Cooper Bussmann 170L5714 400A, 1000V Fuses

Snap Wilcoxon Research Model S100CS

GE Reversing Contactor CR209PIPAA, Size1, 209AP0PAA02A

Allen-Bradley 170024 Discrete Adapter Board, 170014

Westinghouse FB3150SN, 150A, 600V

ABB V/A Master 10A455-5XX-BHC-HBX-X43-11-A31

Simplex 4100-6014 Network

Allen-Bradley Moveable Contact Assembly X343110 R

Siemens 3TB32 16 0AJAir Break

ABB 48931004-AEN Illuminated

Velan G0613-SSGE 3/4" Ball Valve with Field Q QD0040.UA00A.14DD1

Foxboro P0916AE 0C,FBM203 Termination

Siemens 3TB50 17-0AContactor

ABB YPR 104A, YT204001-DF/1

Cleveland Twist Drill M42x2 HS Plug Tap6 Flute

SKF 7313 BEP Angular

Temposonics Magnetostrictive LDT, LPRLVM0153

Allen-Bradley 1403-MM05A, 1403-NSC

Simplex 4100 Flex NAC Amplifier Assembly566-208 with 566-223

Bently Nevada 9200 Seismoprobe 9200-03-01-03-01, 500 mV/in/sec, 270-60,000 CPM

Dresser 1239034H1 Belt

Box of 4 GORE 6" Universal Pipe Gasket 800 UPG1806 .00 x 150RG, 6" x 150lb x 1/8

Measurex 05375400 Quad Differential

Revere Merrick USP1-.1-A10-S264 Load Cell, 100lb

Potter Electric Signal VSR-6 Waterflow Switch 6", 1144506

Foxboro P0121AT Capsule E

Foxboro P0121AK Capsule

Simplex 4100 CPU Motherboard, 637-158, 566-227

Bussmann Semitron SPP-7K800 Fuse

Parker 933802Q 10Q NS Filter Element, RF7-1-10QBUNAELEMASSY










Potter Electric Signal VSR-4 Waterflow Switch 4", 1144504

Eaton Cutler-Hammer E51DP1

Allen-Bradley 800H-FRXM6A7

Foxboro P0916CC Termination Assembly FBM237

Jencons Sealpette 1-5ml, 480-004

Fisher RV100X00M42 Repair Kit, V100, 3"

Parker D1VW2CNYCF4

John Crane Safematic SE-AP-1.181-GREO-305226

John Crane Safematic SEW-T-2.362-QRMV-304186

ABB RXSGA, RK 276 001-BA

Berthold LB3968, 81597

1 CF8M Stainless Steel Ball Valve with FieldQ QS0100.UA04A.19DD10

Garlock 8922 Packing, 3/16" (4.8mm) 41321-1212

Simplex 4100-1248 Class B Adapter, 566-221

ABB TB82 pH transmitter TB82PH2010020

SKF 6311-2ZNR Deep

Fisher R63EGX00142

Edue Italia Alfapanel 24HS II

Omron Scientific  42373 Fibre Optic Cable 20ft, IAT.125-24

Allen-Bradley 1336S-MCB-SPI Main Control Board, 74100-071-51 

John Crane Safematic SE1-AP-1.969-QREO-305328

John Crane Safematic SE1-2.362-GREO-305330

John Crane Safematic SE1-AP-1.575-QREO-305326

GEC Alstom MVAA11B1AA0781A

Melcher LM 1000 Mk II AC/DC-DC

Systematix 100666 Rev H CCA Controller Board SX 4400

SKF Dormer 1-1/2" x 12 UNF Die Nut, F732

FAG 22213E Spherical 

Garlock 127-AFP, 41127-1216 Packing, 1/4" (6.4mm)

Fisher 1U222946172 Seat Ring 4"

A&D AD-4321A

Foxboro P0917XV 0B

Fisher RV100X00M32 Repair Kit, V100, 2"

Asco 8320G192V Solenoid Valve, 1/4" NPT

Fisher RGASKETX222 Gasket Set, 6"

Esko EBC-F1 Flow Meter 100 USGPM

New Impacts Systems 5013216F1-P2

Lot of 3 Numatics Solenoid Valve 134BA400KP00030

Cutler-Hammer E58-30AS6008

Package of 2 x Bussmann LK NES 170E 8023, 400 amp Fuses

GEC CMF300 300 amp

Kone TAC-M 379146 H003, KM379143G01 Rev 11, 058011459

BEI Encoder MT40D-X-HSS512N-32T-XD4-X-E-C14-X-5

SKF HE 2322 Adapter Sleeve, (SNW 122x4)

Chesterton 155OS Single Cartridge Seal, 268737, Size -17 2.125











Digi RAS 4 uPCI 4 Modem 55000770-07 RevC, 50000679-07

FAG 22215EK Spherical

Pall PFD-12 Reservoir Vent , 1330094

ABB 5714012-AK

Bosch Rexroth P-105949-K0000

FAG 7218B.MP.UA Angular

duMont 12mm-D-1, 44403

SKF 3309 ATN9/C3 Double

Bosch Rexroth P-105945-K0000

Allen-Bradley 117526Regulator Board, 115932 rev 3

Fisher BR4303000A2

Bosch 98102231147, 081WVO6P1V1020KL115,4600psi

ABB FDC86-CONT DiskController 57770163,Allen-Bradley 3250-FDC

Measurex Discrete 09436500 Rev G, 05346100

Moore Industries , SRT/1-5VSC/117AC

Butterfield Canada No. 5 HSG 608 Reamer

Simplex 4100-1245 Flex 50

MTS Profibus , 252173-D63 Rev B

SKF 2" x 11.5 NPT Die Nut

Fisher RPACKX00122 Packing 3/4", 3-9/16"

Timken 6376 TaperedRoller

Namco EE630-50610

Rosemount 6292A74G01Filter

Rosemount 8712RA12N6Magnetic

Simplex 4100 100w NAC Amplifier 637-967with 566-223

Fisher Controls 67CFR-224/GF

Foxboro P0916AE Termination Assembly FBM203, Rev 0C

PRX USA Thyristor 117487-7 9812

Rosemount C115 1GP3E22B1C6

Digi 50000490-09 Serial Asynchronous 3750-100

Rexroth 0240D149W/HC-RR Hydraulic Filter, 125937

Fisher Controls 67CFR-600/GF

duMont 3/4-E HS