6FC5203-0AF50-0AA0

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6FC5203-0AF50-0AA0

正遷移故障

在對(duì)處于正遷移狀態(tài)差壓變送器使用過(guò)程中的測(cè)量準(zhǔn)確度進(jìn)行判斷時(shí)，將會(huì)遇到以下兩種問(wèn)題：一是儀表輸出錯(cuò)誤，如果安裝正常的操作順序，應(yīng)該先對(duì)差壓變送器三閥組的正負(fù)壓測(cè)量時(shí)進(jìn)行關(guān)閉，然后進(jìn)行平衡閥打開(kāi)和放空儀表堵頭操作，4mA極限值應(yīng)該遠(yuǎn)遠(yuǎn)高于儀表輸出值，倘若儀表輸出值大于極限值，那么則說(shuō)明運(yùn)行裝置存在堵塞現(xiàn)象，最有可能發(fā)生故障的位置有三閥組和正壓室引線；二是遷移量或者是零位顯示不正常，如果將正壓室取壓點(diǎn)和放空開(kāi)關(guān)依次進(jìn)行關(guān)閉、打開(kāi)操作后，儀表輸出正常的情況下應(yīng)該顯示4mA，那么在遷移量或者是零位都較小時(shí)，儀表輸出值將會(huì)明顯低于4mA，反之，倘若儀表輸出值大于4mA，此時(shí)零位或者是遷移量也會(huì)隨之升高，此外，隔離液外漏或者是未裝滿會(huì)導(dǎo)致正負(fù)壓室有隔離液滲入現(xiàn)象的發(fā)生。
負(fù)偏移故障
在對(duì)處于正遷移狀態(tài)差壓變送器使用過(guò)程中的測(cè)量準(zhǔn)確度進(jìn)行判斷時(shí)，一般會(huì)進(jìn)行兩部分操作：先是應(yīng)該先對(duì)差壓變送器三閥組的正負(fù)壓測(cè)量時(shí)進(jìn)行關(guān)閉，然后進(jìn)行平衡閥打開(kāi)和放空儀表堵頭操作，此時(shí)20mA應(yīng)該為儀表輸出值；之后將正壓室取壓點(diǎn)和放空開(kāi)關(guān)依次進(jìn)行關(guān)閉、打開(kāi)操作后，4mA應(yīng)該是儀表輸出值，兩次操作過(guò)后，儀表輸出值均與實(shí)際不符的話，那么問(wèn)題可能出現(xiàn)在以下幾個(gè)方面：①隔離液滲漏；②正負(fù)壓室引線不流通；③零液位的準(zhǔn)確控制是生產(chǎn)裝置穩(wěn)定運(yùn)行的前提保證，只有掌握了差壓變送器測(cè)液面遷移的原理，才能在實(shí)際應(yīng)用中靈活運(yùn)用，及時(shí)準(zhǔn)確的處理現(xiàn)場(chǎng)儀表出現(xiàn)的故障，以及對(duì)控制方案進(jìn)行改進(jìn)。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。

主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家

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HP 6206B DC Power Supply ,0-60V,5A / 0-30V,1A

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LEICA MICROSCOPE zoom 2000,Z45 L , excellent condition

TEKTRONIX ST2400 SDH/SONET SET WITH OPTION

FOTEC S FS370 238 FIBER POWER SOURCE

Agilent 37718A Omni-Ber 718 Communications Performance

OptiSpec EKE Light source For Video Microscope QTYS 5

HP 81689A Tunable Laser module.w opt 072

Agilent 83481A Dual rate optical/electri?cal plug-in Opt

EFD Model 1500XL Adhesive Dispenser

TEKTRONIX ST2400 SDH/SONET SET WITH OPTION

Vytran PTR-100 Automatic Fiber Recoater

WaveSplitter 1×2 C-band Fused Fiber Coupler

DiCom SCD1263 Forward Pump Islator

JDS Fitel P/N WD1414-Z00033

Intermec MicroBar 9710 Decoder for Barcode Scanners

Visual Inspection / Alignment Station

Ando AQ8423Z Optical Amplifier Analyzer

Philips PM5193-M Programmable synthesizer / function ge

ADE 3401 Capacitive probe, 115V, 50/60Hz.

Hitec 3201-SP Proximic capacitive reactance tester

LeCroy 9374L Oscilloscope, 1GHz,

INO FAD-180 Benchtop Erbium-Doped Fiber Amplifier

Premises,Fiber NCA-8021-001 SM SBJ 13000 FT

JDS Oprel BBS-30-F1-131 Broadband light source

JDS Oprel OFA17-1241S Erbium Doped Fiber Amplifier

JDS/Uniphase SWS15115 Receiver

LeCroy DDA-120 Disk Drive Analyzer. Color Oscilloscope

ANRITSU ME3620A SDH SONET ANALYZER RECIVER

Lambda LK-340A-FM-2108 regulated power supply

Lambda LPD-421A-FM dual output regulated power supply

Lambda LK-343A-FM regulated power supply

GN Nettest 9470 2 MBPS Protocol Analyzer

Lambda LK-342A-FM regulated power supply

TEKTRONIX ST2400 TRANSMITER SDH/SONET SET WITH OPTION

Ericsson Fusion Splicer FSU 925-A PM w /power

BUEHLER ECOMET 3 VIRABLE SPEED GRINDER POLISHER

NATIONAL INSTRUMENTS 763061-01 REV C -X2 GPIB CABLE 1MT

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Tektronix TDS694C REFURBISHED 3GHz 4CH 10GSa w options

OptiSpec EKE Light source 4 units

Corning Vascade L1000 Optical Bare Fiber 31km CPC6

DiCon GP700M Programmable Fiber Multi Switch 1×4

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Agilent 35670A Dynamic Signal Analyzer W Options

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HP 81000BA, Bare Fiber Adapter. 125 um, threaded

HP 83485B 30 GHZ OPTICALPLUG-IN Band

Agilent 83493A Clock Recovery Module

Agilent J4233A, DWDM Transmitter Module

Agilent J4226A, DWDM Transmitter Module option std

Agilent E1676A 2.4 Gb/s SONET/SDH Transport Overhead

LeCroy DDA-125 Disk Drive Analyzer. Single 8 GS/s 16 M

OptiSpec ME3200 Fiber Optic Video Microscope

Hewlett Packard 37717C , Omniber717 WITH OPTS

Hewlett Packard 37717C with 110,A3B Omniber717

HP/Agilent E1406A VXI COMMAND MODULE

Agilent J4223A SpectralBER DWDM Controller with Option

TEKTRONIX VX4610 TEKTRONIX SDH/SONET GENERATOR RECEIVER

WaveSplitter 2×2 C-band Fused Fiber Coupler

Hewlett Packard 70842B Error Detector Module,

JDS Uniphase MAP+2B00 WITH Tunable grafing filter

HP 83480A / E2602A Digital Communications Analyzer

OptiSpec ME6000 Portable Fiber Optic Inspection Scope

OptiSpec module- scope Fiber Optic Inspection Scope

Agilent E1676B 2.4 Gb/s SONET/SDH Transport Overhead

JDSU SAMTA200 1X4 fiber optic switch bank w/ 8 modules

Agilent 8702A Lightwave Analyzer 300k-6Ghz w opt

JDS SA8MTA200 1×4 switch plug-in for MTA Mainframe

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LeCroy DDA-120 Disk Drive Analyzer. Single 8 GS

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Anritsu MP1764C 12.5 GHz Error Detector with Option 01

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FIS 9050-0000 OV-LS Optical light source

Agilent 86100A Infiniium DCA Oscilloscope Mainframe

HP 83480A Digital Communications Analyzer

Agilent 8494G 10MHZ-18GHZ POWER SENSOR W OPT 001

Agilent 4436A Attenuator DC to 1.5 MHz, 0-119.9 dB in 0

HDMI to VGA RCA Adapter Cable 5ft

JDS Fitel RM3750B ( RM3750B+Z0001 ) Backreflect Meter

HP/Agilent 8156A Optical Attenuator with option 101

HP/Agilent 81536A InGaAs, +3 to -70 dBm, 800 to 1700nm

Corning Leaf (R) Optical Bare Fiber10.5km

OptiSpec EKE Light source For Video Microscope

NEWPORT ORION-CM Fiber Alignment System

TTC T-BERD211 Communications Test Sets T1 TRANSMISSION

LeCroy 9354AL 500MHz Oscilloscope w options

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LeCroy 9314L Quad 300MHz Oscilloscope

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Agilent 8168A Tunable Laser Source 1450-1588nm

GN Nettest/Photone?tics 3642HE L Tuneable Laser Source

Metcal Rework System MX-500P Soldering Power Supply

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15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營(yíng)：本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測(cè)速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。

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