VMIC VMIPMC-5565
VMIC VMIPMC-5565
經(jīng)過這些年來的不斷應(yīng)用，DCS系統(tǒng)在行業(yè)發(fā)展的一些局限性逐步體現(xiàn)出來，DCS存在的問題：
(1)1對(duì)1結(jié)構(gòu)。1臺(tái)儀表，1對(duì)傳輸線，單向傳輸1個(gè)信號(hào)。這種結(jié)構(gòu)造成接線龐雜、工程周期長(zhǎng)、安裝費(fèi)用高、維護(hù)困難。
(2)可靠性差。模擬信號(hào)傳輸不僅精確度低，且易受干擾。為此采用各種措施提高抗干擾性和傳輸精確度，其結(jié)果是增加了成本。
(3)失控狀態(tài)。操作員在控制室既不了解現(xiàn)場(chǎng)模擬儀表的工作狀況，也不能對(duì)其進(jìn)行參數(shù)調(diào)整，更不能預(yù)測(cè)事故，導(dǎo)致操作員對(duì)其處于失控狀態(tài)。因操作員不能及時(shí)發(fā)現(xiàn)現(xiàn)場(chǎng)儀表故障，而發(fā)生事故已屢見不鮮。
(4)互操作性差。盡管模擬儀表已統(tǒng)一4～20mA信號(hào)標(biāo)準(zhǔn)，可大部分技術(shù)參數(shù)仍由制造商自定，致使不同品牌儀表無法互換。因此導(dǎo)致用戶依賴制造廠，無法使用性能價(jià)格比*的配套儀表，甚至出現(xiàn)個(gè)別制造商壟斷市場(chǎng)的局面。
RIETER 1866 0760 PHOTOEYE SENSOR/SWITCH 18660760 NEW CONDITION IN PACKAGE
BUSSMANN FWP-250A SEMICONDUCTOR FUSE 250A 700V AC/DC NEW CONDITION IN BOX
BUSSMANN FWH-450A SEMICONDUCTOR FUSE 450A 500V AC/DC NEW CONDITION IN BOX
OMRON H3M TIMER PLUG-IN MODULE 1-10 SEC. - 1-10 MIN. NEW CONDITION IN BOX
EMECANIQUE 9838 EB1 AUXILIARY CONTACT 600V NOS CONDITION IN BOX
NAMCO EB200 30843 PULL TYPE SOLENOID COIL 110V 1/2" STROKE NEW CONDITION IN BOX
STRUTHERS-DUNN 237XBXP-020-120 TIME DELAY RELAY MODULE NEW CONDITION IN BOX
MB MANUFACTURING KFC4 45 2 FLANGE TYPE PILLOW BLOCK BEARING 2" BORE NEW IN BOX
NTN 6322 C3 DEEP GROOVE BALL BEARING 110MM X 240MM X 50MM NEW CONDITION IN BOX
NTN 6322-ZZ SHIELDED ROLLER BEARING 110MM X 240MM X 50MM NEW CONDITION IN BOX
SKF 6309/C3 DEEP GROOVE BALL BEARING 45 X 100 X 25MM NEW SEALED CONDITION IN BOX
SKF 6208/C3 DEEP GROOVE BALL BEARING NEW SEALED CONDITION IN BOX
GLENAIR 370DA002B2016A-722 BACKSHELL 90 CONNECTOR NEW CONDITION IN PACKAGE
AMPHENOL SINE ZPLML-2016-12S CONNECTOR NEW CONDITION IN PACKAGE
NUMATICS L11PA452O000000 PNEUMATIC VALVE NEW CONDITION IN PACKAGE
WAIRCOM UKC4/16/B PNEUMATIC VALVE UKC416B NEW CONDITION IN BOX
NUMATICS L11PP752O000000 PNEUMATIC VALVE NEW CONDITION IN PACKAGE
NORGREN SXP9573-180-00 PNEUMATIC SPRING RETURN PILOT VALVE NEW IN PACKAGE
AUTOMATIC VALVE 407B43S39A-AA5 PNEUMATIC SOLENOID VALVE 120V NEW NO BOX
PARKER SCHRADER BELLOWS K342006 FLOW CONTROL KIT NEW CONDITION IN PACKAGE
CUSTOM CONTROL SENSORS 608GC1 PRESSURE SWITCH/SENSOR 4500PSI NEW IN BOX
AUTOMATIC VALVE B6692-130-130 PNEUMATIC DUAL REGULATOR VALVE NEW IN PACKAGE
AUTOMATIC VALVE 407B43S3S3-DB7 PNEUMATIC SOLENOID VALVE 24V NEW NO BOX
MAC VALVES 55B-12-PI-111JM PNEUMATIC SOLENOID VALVE 120V NEW IN PACKAGE
NUMATICS I12BA400MP14X61 PNEUMATIC SOLENOID VALVE 24V NEW IN PACKAGE
FANUC VE-0409-002 VIDEO BOARD NEW CONDITION / NO BOX
STEARNS 4240101 REPLACEMENT COIL 115V 60HZ NEW CONDITION NO BOX
NUMATICS 33JPR400O000000 SPRING RETURN PNEUMATIC VALVE NEW IN PACKAGE
TURCK BC5-S18-AP4X PROXIMITY SENSOR ID# 25030 0.5-5MM 10-65 VDC NEW IN PACKAGE
BURNDY UTG62028PN CONNECTOR FOR TRIM-TRIO CONTACTS NEW IN PACKAGE
NUMATICS L12BB552O000030 PNEUMATIC SOLENOID VALVE 120V NEW CONDITION
BUSSMANN FWH-150A 150A 500VAC/DC SEMICONDUCTOR FUSE NEW NO BOX
SKINNER VALVE PARKER V57724F24 REPLACEMENT COIL NEW CONDITION IN BOX
SMC VQZ2221-5YZ-N7 PNEUMATIC SOLENOID VALVE 24VDC NEW IN PACKAGE
NUMATICS L11BB752B000061 PNEUMATIC SOLENOID VALVE 24VDC NEW CONDITION NO BOX
NUMATICS L01SS4872000030 PNEUMATIC SOLENOID VALVE 120V NEW CONDITION IN PACKAGE
TIMKEN 065000800 TAPERED ROLLER BEARING ASSEMBLY 1-3/8" BORE NEW IN PACKAGE
BUSSMANN DMM-B-11 FAST ACTING FUSES 11A 1000VAC/DC (SET OF 3) NEW NO BOX
SKF 6008-2RS1 SINGLE ROW BALL BEARING 40 X 68 X 15MM NEW CONDITION IN BOX
FAFNIR 306PP SEALED BALL BEARING 30MM X 72MM X 19MM NEW CONDITION IN BOX
SKF 6203-2ZJEM SHIELDED BALL BEARING 17MM X 40MM X 12MM NEW CONDITION IN BOX
SKF 6001 2RSJEM SEALED BALL BEARING 12MM X 28MM X 8MM NEW CONDITION IN BOX
SKF 629 2RSJEM SEALED BALL BEARING 9MM X 26MM X 8MM NEW CONDITION IN BOX
BANNER SM2A91RSRQD VALU-BEAM RECEIVER 3M 24-250VAC 26650 NEW IN BOX
KOP-FLEX SIZE 2F FULL FLEX COUPLING HUB ROUGH BORE NEW CONDITION IN BOX
KOP-FLEX SIZE 2-1/2 FULL FLEX COUPLING HUB ROUGH BORE NEW CONDITION IN BOX
KOP-FLEX SIZE 2-1/2 FULL FLEX COUPLING HUB 2.125 BORE NEW CONDITION IN BOX
KOP-FLEX SIZE 2-1/2 FULL FLEX COUPLING HUB 2.625 BORE NEW CONDITION IN BOX
KOP-FLEX SIZE 2.0 FULL FLEX COUPLING HUB 2.124+.0005 BORE NEW CONDITION IN BOX
KOP-FLEX SIZE 2.0 FULL FLEX COUPLING HUB 1.374+.0005 BORE NEW CONDITION IN BOX
MAC VALVES 82A-BC-CAA-TM-DDAP-1DA PNEUMATIC SOLENOID VALVE 24V NEW NO BOX
BOSCH 0 820 028 931 PNEUMATIC SOLENOID VALVE NEW CONDITION / NO BOX
PARKER D1BW20BVY-21 HYDRAULIC SOLENOID CONTROL VALVE NEW CONDITION NO BOX
NUMATICS 11SAD449O000030 PNEUMATIC SOLENOID VALVE 115/120V NEW CONDITION
NUMATICS 11SAD4490 PNEUMATIC SOLENOID VALVE 115/120V NEW CONDITION
NUMATICS 031ss5152000030 PNEUMATIC SOLENOID VALVE NEW CONDITION
BUSSMANN LPS-RK-225SP LOW-PEAK TIME DELAY FUSE 225A 600V NEW CONDITION NO BOX
EMERSON 52414 DC REGULATOR BOARD ASSY. 02-777821-00 NEW SEALED CONDITION IN BOX
FANUC A16B-1310-052 CONTROL MODULE EXCELLENT USED CONDITION
NUMATICS 11DSA449O00030 PNEUMATIC SOLENOID VALVE NEW CONDITION
NUMATICS 11DSA449000030 PNEUMATIC SOLENOID VALVE NEW CONDITION NO BOX
EFECTOR KG-2008-FRKG/KG5016 PROXIMITY SENSOR 2.5-8MM 10-55VDC NEW IN BOX
RAM METER 2SFT-500 CURRENT TRANSFORMER 50:5 RF 1.0 600V NEW NO BOX
SEALMASTER 2-012T BEARING INSERT 3/4" NEW CONDITION IN BOX
HUB CITY 1004-02902 TAKE UP PILLOW BLOCK BEARING TU220X5/8 NEW CONDITION IN BOX
RAM METER 2SFT-600 CURRENT TRANSFORMER 60:5 RF 1.0 600V NEW NO BOX
ELAN EF 220F.2 CONTACT BLOCK 10A 300 VAC NEW CONDITION / NO BOX
INSTRUMENT TRANSFORMERS 6SHT-251 CURRENT TRANSFORMER 250:5 A 600V NEW IN BOX
E.I.L INSTRUMENTS 6SHT-151 CURRENT TRANSFORMER 150:5 A 600V NEW IN BOX
WEIDMULLER 910671 RSO MODULE 8 CHANNEL 91067.1/67 NEW CONDITION IN BOX
SQUARE D 9080 CA-14 TERMINAL BLOCK 14 CIRCUIT 600V NEW CONDITION IN BOX
SPRECHER+SCHUH CA3-12C-10 CONTACTOR / STARTER 3 POLE 24 VDC NEW CONDITION NO BOX
EMECANIQUE LP1-D1210-BD CONTACTOR / STARTER 12A 3 POLE 24VDC NEW NO BOX
ELAN EF 220.1 CONTACT BLOCK 10A 300 VAC NEW CONDITION / NO BOX
BUSSMANN FWH-325A SEMICONDUCTOR FUSE 325A 500V AC/DC NEW CONDITION IN BOX
BUSSMANN FNA-6/10 FUSETRON FUSES 6/10A 250V NEW BOX OF 10
BUSSMANN FWH-150B FUSE 150A 500V NEW CONDITION IN BOX
SHAWMUT AMP-TRAP A60X1500-128 FUSE 1500 AMPS 600V TYPE 128 NEW CONDITION NO BOX
WESTINGHOUSE ELECTRIC 800NBP20 CURRENT LIMITER FUSE 300-800A NEW NO BOX
NUMATICS 11PAD444O000000 PNEUMATIC VALVE NEW CONDITION IN PACKAGE
NUMATICS NUMATROL TM0-2101 PNEUMATIC TIMER VALVE WITH BASE NEW IN PACKAGE
NUMATICS NUMATROL TM0-2105 PNEUMATIC TIMER / ACTUATOR VALVE NEW IN PACKAGE
TURCK BI10F-Q34-ADZ30X2-B3131/S34 PROXIMITY SENSOR # 42170 10MM NEW NO BOX
TURCK BI10T-Q34-ADZ30X2-B3131/S34 PROXIMITY SENSOR # 42171 10MM NEW NO BOX
EMECANIQUE XCK J1305707 SAFETY INTERLOCK LIMIT SWITCH NEW CONDITION IN BOX
OMEGA ENGINEERING PSS-D12A DUAL POWER SUPPLY 115 / 12V NEW CONDITION NO BOX
ALLEN BRADLEY 871Z-DW5NP18-D4 PROXIMITY SENSOR 5MM 10-30 VDC NEW IN PACKAGE
SKF 6214-2RS1 SEALED BOTH SIDES ROLLER BEARING 2-3/4 ID NEW CONDITION IN BOX
GENERAL BEARING 6207 ZZ E ROLLER BEARING 1.375 ID 2.834 OD .668 WIDTH NEW IN BOX
BARDEN 102H PRECISION ROLLER BALL BEARING NEW SEALED CONDITION IN BOX
FAFNIR 3MM9104WI DUM SUPER PRECISION ANGULAR CONTACT BEARINGS NEW MATCHED SET
JOHN CRANE MULTIPLE SPRING WEDGE SEAL TYPE 9 2" SHAFT NEW CONDITION / NO BOX
AUTOMATIC VALVE 407D87S39DS3AA4 PNEUMATIC SOLENOID VALVE 120V 150PSI NEW NO BOX
SNR 5208ZZ SHIELDED ROLLER BEARING NEW CONDITION NO BOX
INA 6306 RS SEALED ROLLER BEARING 1.179 ID, 2.834 OD, .747 W NEW NO BOX
BARDEN ZXL067H ROLLER BALL BEARING 1.249 ID, 2.437 OD, .625 W NEW NO BOX
BARDEN 2210H SINGLE ROW BALL BEARING NEW PART # 210HE NEW CONDITION / NO BOX
SKF FA 11243W DEEP GROOVE BALL ROLLER BEARING NEW CONDITION / NO BOX
FAFNIR 3MM9110WICRDUL SUPER PRECISION ANGULAR CONTACT BEARINGS (MATCHED SET) NNB
INA LR 5308 NPPU TRACK ROLLER BEARING NEW CONDITION / NO BOX
TIMKEN 72188C 3 TAPERED ROLLER BEARING CONE 1-7/8" BORE NEW CONDITION NO BOX
TIMKEN 476863 TAPERED ROLLER BEARING CONE 3-1/4" BORE NEW CONDITION NO BOX
HARTING R15-STI-C ROUND MALE PIN CONNECTORS NEW PACKAGE OF 100PCS
ASCO 302-288 SOLENOID VALVE REBUILD KIT NEW CONDITION IN PACKAGE
INTERNATIONAL RECTIFIER 12-67915020 8752 DIODE NEW CONDITION / NO BOX
INTERNATIONAL RECTIFIER 15-679130-20 DIODE NEW CONDITION / NO BOX
GOULD SHAWMUT A70P10-1 AMPTRAP FUSES 10A 700 VAC TYPE 1 (SET OF 5) NEW NO BOX
RELIANCE BRUSH FUSE ECNR 40 TIME DELAY FUSES 40A 250VAC CLASS RK5 (SET OF 7)
REXROTH MECMAN 438-150000-1 PNEUMATIC SILENCER 1" NPT NEW CONDITION IN PACKAGE
INGERSOLL RAND 39403290 AUTO CONTROL RELAY NEW CONDITION IN BOX
HONEYWELL 106615A SAFEGAURD PLUG-IN RELAY FOR R4075A NEW CONDITION IN BOX
JOHNSON CONTROLS R-3030-1 REVERSING RELAY EXCELLENT USED CONDITION
SCHNEIDER ELECTRIC TBXCBS010 TBX7 CONNECTOR EXTENSION KIT NEW IN BOX
NUMATICS I23SS515K000030 PNEUMATIC SOLENOID VALVE 120V 150 PSI NEW CONDITION
SICK FGSS 900-11 SAFETY LIGHT CURTAIN SENDER UNIT 14-FGS NEW CONDITION IN BOX
SICK FGSE 900-111 SAFETY LIGHT CURTAIN RECEIVER 14-FGS NEW CONDITION IN BOX
TOX PRESSOTECHNIK S 08.30.50.06 D.US PNEUMATIC-HYDRAULIC POWERPACKAGE UNIT NNB
TOX PRESSOTECHNIK ES 100.100.39.39 PNEUMATIC-HYDRAULIC INTENSIFIER UNIT NNB
AMI MUCNFL207W THERMOPLASTIC FLANGE TYPE PILLOW BLOCK BEARING 1-3/8 NIB
AMI MUCPPL207W CORROSION RESISTANT THERMOPLASTIC PILLOW BLOCK BEARING 1-3/8 NIB
DODGE WSTU-LT7-208USE WS-502FR TAKE-UP BEARING 2-1/2" BORE 033886 NEW NO BOX
AMI MUCPPL205-16B CORROSION RESISTANT THERMOPLASTIC PILLOW BLOCK BEARING 1" NIB
AMI ASAHI 206PR-E REPLACEMENT BEARING INSERTS 1.180 BORE (NEW SET OF 4) NNB
LITFUSE FLSR 1 ID POWR-GARD INDICATOR FUSES 1A 600VAC (SET OF 3) NEW NO BOX
LITFUSE FLSR 1 ID POWR-GARD INDICATOR FUSES 1A 600VAC (SET OF 6) NEW NO BOX
BUSSMANN FRS 1 FUSETRON FUSES 1A, 600V CLASS K5 (SET OF 20) NEW CONDITION NO BOX
BUSSMANN FRS 6 1/4 FUSETRON FUSES 6.25A, 600V CLASS K5 (SET OF 7) NEW NO BOX
BUSSMANN LPJ-30SP LOW PEAK TIME DELAY FUSES 30A 600V CLASS J SET OF 2 NEW NO BOX
GOULD SHAWMUT TRS4R DUAL ELEMENT TIME DELAY FUSES 4A 600VAC/DC (SET OF 6) NNB
BUSSMANN NOS-90 ONE-TIME FUSE 90A 600VAC NEW CONDITION / NO BOX
BRIGHT STAR INDUSTRIES 1903X-19 TRANSISTORIZED CIRCUIT CONTINUITY TESTER NEW
MILWAUKEE 48-80-0500 SANDING DISCS 4-1/2" 24 GRIT 7/8 ARBOR NEW BOX OF 20 PCS.
OMRON MY2N RELAY 110/120VAC NEW CONDITION / NO BOX
MASTER PNEUMATIC-DETROIT F100-6 FILTER ASSEMBLY 3/4" NEW CONDITION IN BOX
ALLEN BRADLEY1734D-IB8X0B8E I/O MODULE 95722702 24VDC NEW CONDITION / NO BOX
EMHART E100 631 B218 INTERFACE SMPS/C BOARD NOS CONDITION
TRINITY INDUSTRIAL 42-130 3 WAY COLOR CHANGE VALVE NEW
REXROTH PR7564-51005 HEAVY DUTY REGULATOR 0-125 PSI 3/4" NPT NEW NO BOX
BROOKS INSTRUMENT 1307FJ26CD2DA FLOWMETER 1/2" NPT GPM .02 / 1.0 NEW CONDITION
MAC VALVES MAC125A-V6G2PM-511DA PNEUMATIC SOLENOID VALVE 24VDC NEW NO BOX
AUTOMATIC VALVE 407B87S3S3-AA4 PNEUMATIC SOLENOID VALVE 120V 150PSI NEW NO BOX
NUMATICS 081SS4002 PNEUMATIC SOLENOID VALVE 120V 150 PSI NEW CONDITION
NUMATICS L1211652BP SOLENOID VALVE HAZARDOUS / INTRINSICALLY SAFE NEW CONDITION
PARKER L7153830253VXBB PNEUMATIC SOLENOID VALVE 120V 150 PSI NEW CONDITION
