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廈仲岳航計(jì)算機(jī)工程有限公司
聯(lián)系人：陳如（銷售工程師）
電話：0592-5085329
手機(jī)：18030132586
傳真：0592-5165561(陳工）
郵箱：1151195663@qq.com
qq:1151195663
廈門市思明區(qū)湖濱東路湖光大廈8樓A座
一般來(lái)講，控制系統(tǒng)網(wǎng)絡(luò)可分為3層：信息層、控制層和設(shè)備層(傳感/執(zhí)行層)。傳統(tǒng)的控制系統(tǒng)在信息層大都采用以太網(wǎng)，而在控制層和設(shè)備層一般采用不同的現(xiàn)場(chǎng)總線或其他專用網(wǎng)絡(luò)。目前，以太網(wǎng)已經(jīng)滲透到了控制層和設(shè)備層，很多的PLC和遠(yuǎn)程I/O供應(yīng)商都能提供支持TCP/IP的以太網(wǎng)接口的產(chǎn)品。以太網(wǎng)之所以給自動(dòng)化市場(chǎng)帶來(lái)風(fēng)暴式的革命，主要有3個(gè)原因：低成本的刺激和速度的提高；現(xiàn)代企業(yè)對(duì)實(shí)時(shí)生產(chǎn)信息有越來(lái)越多的要求；以太網(wǎng)的開放性和兼容性。
早期的以太網(wǎng)，多節(jié)點(diǎn)共享同一個(gè)傳輸媒體，稱為共享以太網(wǎng)(Shared Ethernet)，節(jié)點(diǎn)間通信采用廣播方式，易發(fā)生沖突。共享以太網(wǎng)用CSMA/CD技術(shù)來(lái)避免沖突，即發(fā)送方檢測(cè)到?jīng)_突就暫停發(fā)送，隨機(jī)延遲一段時(shí)間后再重新發(fā)送直到成功。由于延遲時(shí)間是隨機(jī)的，不能事先知道，因而共享以太網(wǎng)的時(shí)間響應(yīng)具有不確定性，不能用于強(qiáng)實(shí)時(shí)性場(chǎng)合。
交換以太網(wǎng)(Switched Ethernet)的出現(xiàn)克服了這一缺點(diǎn)，以太網(wǎng)的交換機(jī)(Switch)是數(shù)據(jù)鏈路層(ISO/OSI參考模型第二層)的多端口網(wǎng)橋，也可以說(shuō)是智能分配器。交換機(jī)將其管理的網(wǎng)絡(luò)以星型拓?fù)浣Y(jié)構(gòu)劃分為許多物理上互相隔離而邏輯上互相聯(lián)系的節(jié)點(diǎn)，每一節(jié)點(diǎn)單獨(dú)與交換機(jī)建立物理連接，在通信的時(shí)候交換機(jī)會(huì)在發(fā)送端口與接受端口間建立一個(gè)獨(dú)占的全雙工通道，它具有以太網(wǎng)的全部帶寬并避免沖突。
Viatran 3475AM2AAA20 Pressure Transducer 0-100 PSIG 4-20mA (Used)
Bellofram 221-961-070 I/P Transducer Input 4-20 MA Output 3-15 psi (No Fittings)
Amphenol-Tuchel C019A T 3504 002 Cable Connector 5A 60V (NIP)
Victoreen MOX F Resistor 20K .5%
Victoreen MOX F Resistor 5 MEG .5%
Norgren 53-4001-00 I/P Converter with 0-30 psi Gauge (No Mounting Bracket)
Hoffman A-1210CH Industrial Enclosure (Wire Access on Side)
Hoffman A-1210CH Industrial Enclosure (3 Hole Wire Access, Missing 1 Bracket)
Electronics Corporation of America 1001C Electric Level Control 115/230V
Industrial Devices EC2-H-100-05B-50-MS2-FT1 Electric Cylinder 160V 2A
AMP 66099-2 Pin and Socket Connectors (Approx. QTY. 195)
AMP 66101-2 Pin and Socket Connectors (Approx. QTY. 105)
Clarostat RV4NAYSD103A Potentiometer 10K OHMS
Clarostat RA30NASD102A Potentiometer 1K OHMS
AMP 206043-1 Housing Receptacle 14 Pin
AMP 206429-1 Connector Plug
AMP 211768-11 Connector Plug
GAI-TRONICS 723-001 Handset Speaker Amplifier Page/Party System with Handset
Wallace & Tiernan U-95 220 Depolox 3 Analyzer
York 120687R Capacitor 370 VAC 60 CY
Amphenol-Tuchel T3507 009 Circular DIN Connector
Corcom 2B1 EMI Filter 115/230V 2A 50-400 Hz
Amphenol-Tuchel C091AT3504002 Connector Plug
Amphenol Corporation 203/743-9272 Connector
Bellofram 221-961-070 I/P Transducer (No Mounting Plate)
Action Instruments V560-000014 Loop Powered Indicator (Used)
Bellofram 961-070-000 I/P Transducer (Used)
Bellofram 221-961-070 I/P Transducer with Chem Oil Pressure Gauge 0-30 PSI
CDI 505D24 DC/DC Converter (Used)
Cutler-Hammer 10250T3 Contact Block Series A4 (NIB)
Micro Switch PA4 Logic Module 15V 50/60 Hz 8 Pin
Rosemount 1151DP4J22M1B1 Alphaline Pressure Transmitter 45 VDC 2000 PSI
Foxboro 870PH-70-N Electronic Transmitter
Ohmite RJS800 Resistor 800 Ohms 0.250A with Claro VC-10-F Ceramic Resistor
Datamate 9303005 Pressure Transmitter 0-200 PSIS 4-20mA (Transmitter Only)
Datamate 9303001 Pressure Transmitter 0-15 PSIG 4-20mA (Transmitter Only)
Hach LXV401.52.00002 SC 100 General Purpose Analyzer 100-230V 50/60 Hz
RIS SC-1374 RTD Transmitter115VAC 4-20mA 110-132 Ohms
HACH 44000-10 1720C Turbidimeter with Power Cord
Pasaban Electronic PG-4233 Splice Detector (Used)
Pasaban Electronic PG-4233 Splice Detector (Missing Knob)
MTL MTL722+ Shunt-Diode Safety Barrier (Used)
MTL MTL722- Shunt-Diode Safety Barrier (Used)
MTL MTL764+ Shunt-Diode Safety Barrier (Used)
MTL MTL755ac Shunt-Diode Safety Barrier (Used)
MTL MTL715+ Shunt-Diode Safety Barrier (Used)
RS 211-0682 Twinbloc Adaptor (NEW)
Rosemount Analytical TDP24K-04 Hygroline Indicator 120V
Exide X1060-74-1 Load Hog Remote Control
Drexelbrook Engineering 406-7001-001 High Low Level Alarm 120V 50/60 Hz
Fairchild TT8001-051000 Transducer 0-60 PSGI, 4-20 mA
Rosemount 2088 G3A22A1 Pressure Transmitter 800 psi, 55 BAR, 10.5-36 VDC
Rosemount CG4A22A1AB4M5 Pressure Transmitter 300 psi, 21 BAR, 10.5-55 VDC
Norgren 53-4001-00 I/P Converter Type 100X with 0-30 psi Gauge
Viatran 3475AM2AAA20 Pressure Transducer 0-100 PSIG (Includes Calibration)
Viatran 3475AM2AAA20 Pressure Transducer 0-100 PSIG 4-20mA
Norgren 53-4001-00 I/P Converter Type 100X
Bellofram 221-961-070 I/P Transducer Input 4-20 MA, Output 3-15 psi Type 1000
Ohmite RJS800 Resistor 800 Ohms 0.250A (Used)
Ohmite RJS800 Resistor 800 Ohms 0.250A
Ohmite RJS15K 15K Ohms 0.058A 750V Max
Ohmite 1118 Resistor 1500 Ohms, 0.22A
Measurment Technology MTL 722 Shunt-Diode Safety Barrier W/ Hoffman Enclosure
Data Instruments 9242902 Model BL Pressure Transmitter
Data Instruments 9242902 Model BL Pressure Transmitter (Used)
Datamate 9303005 Pressure Transmitter 0-200 PSIS, 4-20mA
Datamate 9303003 Pressure Transmitter 0-50 PSIG
GE 8070EC101AA476 Rheostat 1000 OHMS 600V Max
Rosemount 1151DP6E22M1B1 Alphaline Pressure Transmitter 2000psi 45VDC
Hach 1720C Low Range Process Turbidimeter (Used)
Moore Industries PAC/5A/4-20MA/S/-CG- AC Current Transducer 120V 50/60 Hz 0-5A
Shimpo DT-107 Digital Tachometer
Eagle Signal BR17A6 Timer 120V 50/60 Hz
Rockwell Automation 9300-RADM1 Data/Fax Modem
Phillips A21509-532-02 Capasitor 400VDC, 450 Surge, 6000UF, 105 Max Ambient
Fuji 1DI300Z-120 Power Transistor 1200V 300A
H6220-900-006 Offset Control
Clarostat RA30NASD103A Potentiometer 10K
Littlefuse LD5552-3 Power Distribution Blockr 600V 380A
Control Concepts IC+102 Islatrol Plus Active Tracking Filter 120V 2.5A 50/60 Hz
Allen Bradley LT 200-S/SP33 LEM Current Module (No Wire Connectors)
Ronken P61A23605K50 Capacitor (Used)
Wilkerson Instrument Co., Inc. DM4380A DC to DC Isolated Transmitter (No Cover)
Wilkerson Instrument Co., Inc. DM4380A DC to DC Isolated Transmitter (Used)
ILSCO TA-350-2NS Aluminum Mechanical Lug (Used)
Honeywell DC300K-0-0A3-20-0000-0 UDC3000 Versa-Pro Temperature Controller
Allen-Bradley LT 200-S/SP33 LEM Current Module
Ohmite PFE5KR180 POWR-RIB Resistor (NEW)
TP-G9S-UX Digital Keypad
Daniel Woodhead 803P402 4 Port Distribution Box
Hytrol 8968
Daniel Woodhead 81228-002 Micro Change Cord 3 Pin
Daniel Woodhead 81230-002 Micro Change Cord 3 Pin
Daniel Woodhead 81230-007 Cable Assembly 3 Pin
Daniel Woodhead 81229-007 Cable Assembly 3 Pin
Adtech RBT 372 Three Wire Transmitter (Used)
RS 457-579 MS Bayonet Plug
+GF+ SIGNET 3-8550-1P Panel Mount Flow Transmitter (Used)
CSI Control Systems A0322RI-1 ICP Accelerometer (No Calibration Certificate)
CSI Control Systems AO322LC-1 ICP Accelerometer ( Calibration Cert. Included)
Bellofram 966-710-100 Transducer T-1500
StoneL FBP06009 Protected Drop (Parts Only)
Turck RSF55-1M/NPT Minifast Receptacle
Mead PVD1 Female Plug For Solenoid
Pyramid Electronic Display (Used)
Spectrol 860 Precision Potentiometer with Hoffman E-1PB Enclosure (Used)
Hoffman F66LB Box Connector (Incomplete Kit)
Memcor R-50 Rheostat Potentiometer (Used)
Hoffman 14263-001 Sealing Plate (Incomplete Kit)
Clarostat VP-50-KA Resistor (NIB)
Clarostat VP10FA Resistor (NIB)
Clarostat VP25K Resistor (NIB)
Brad Harrison AWM-2661 Cordset 5 Pole Female Connector
Adept Tech 90405-10030 SmartModule with Adept Tech 30410-10000 SmartAmp
Fanuc EE-0365-502-025 Vision Cable
Allen Bradley 1492-N45 Terminal Block Accessory (Pack of 20)
Allen Bradley 285-DBK22-M3 ArmorStart Dynamic Brake Cable
Solenoid 20518-A 12V
Regdon 990066 1408 Solenoid
Harting 09 45 125 1100 RJ Industrial IP 67 Data 3A Connector
GE 9L10MAL314 Tranquell High Energy Surge Protector
GE 9L10MAL334 Tranquell High Energy Surge Protector
Allen Bradley 1485P-P1H4-S Kwik
Marathon CC1432 Power Distribution Block Cover
Allen Bradley 1485A-FCM Flat Cable Mount
Allen Bradley 1485A-C5E4 DeviceNet Kwik
Allen Bradley 1485A-CAP Kwik
Banner OLM8 OMNI-BEAM Logic Module
Ohmite RHS6R0 Rheostat
Belden 10321-13050 Data Cable Assembly
ISIS Group RTS-201 Digital Signal Protection Switcher
Leader LBO-2060 Oscilloscope
Roxburgh MIF323 Motor Drive Filter
Buss 16372-3 Terminal Block 600V 310A (NIB)
Siemens 6ES7 972-0BB12-0XA0 Profibus Connector
AI/FOCS 300-0176 Cable
Allen Bradley 2835 E87647 VW-1SC Cable
MEPCO/ELECTRA X7R104MB MEPCAP Ceramic Capacitor (Box of 50)
Adept Technology 20154-00160 MONINTFC Coax Cable Assembly
Turck RS 4.4T-10/S101 Flex Life Cordset
Turck RS 4.4T-3/S101 Flex Life Cordset
Turck PKG 4M-10/S90/S101 Flex Life Cordset
Turck VB2-RSSW 578-.3M/2RKSW578-DCL/C1206 Bus Stop Station
Turck WAKW 4.5T-10/S653 Eurofast Cordset
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