變頻器主要由整流（交流變直流）、濾波、再次整流（直流變交流）、制動(dòng)單元、驅(qū)動(dòng)單元、檢測(cè)單元微處理單元等組成的。 1、西門(mén)子通用型變頻器的特點(diǎn) 西門(mén)子變頻器進(jìn)入中國(guó)市場(chǎng)較晚，但是其增長(zhǎng)速度快。西門(mén)子變頻器主要分為通用型、工程型和型三類(lèi)。西門(mén)子通用型變頻器快速增長(zhǎng)的原因主要有以下幾個(gè)方面: (1)、不斷推出新產(chǎn)品，滿足不同用戶的特定要求。西門(mén)子產(chǎn)品一般的更新周期不超過(guò)5年。其產(chǎn)品能夠滿足不同用戶的要求。 (2)、強(qiáng)大的通訊功能和的配套軟件，是西門(mén)子自動(dòng)化產(chǎn)品的特點(diǎn)。這在我國(guó)造紙、化工、鋼鐵、機(jī)械制造等諸多產(chǎn)業(yè)從技術(shù)改造向自動(dòng)化控制推進(jìn)的飛速發(fā)展過(guò)程中，尤顯其競(jìng)爭(zhēng)優(yōu)勢(shì)。
National Instruments AT-AO-6/10 Acquisition DAQ Board - Never Used
Customs services and international tracking provided
National Instruments DAQCard-AI-16E-4 Data Acquisition Card 183262D-01
From Singapore
Messkarte Typ NATIONAL INSTRUMENTS NI-DAQ mx NI DAQCard-500
From Germany
National Instruments 183094H-01 PCI-1200 Multifunction Data Acquisition Card
NATIONAL INSTRUMENTS NI-DAQ DOCUMENTATION AND SOFTWARE COMBO KIT VERSION 7.4
National Instruments PC-DIO-24 180710C-01 ISA Data Acquisition Card 24-Bit
Newly ListedNATIONAL INSTRUMENTS NI DAQ CABLE, SH68-68-D1 183432-01 1M(meter) 183432A
NATIONAL INSTRUMENTS NI - DAQ SOFTWARE Ver. 7.0.1
Customs services and international tracking provided
Newly ListedNATIONAL INSTRUMENTS NI - DAQ SOFTWARE Ver. 7.0.1
Customs services and international tracking provided
Used National Instruments NI For PCI-6534 Data Card FREE SHIPPING
From Hong Kong
NI PCI-6259 Multifunction Data Acquisition (DAQ) 32 Ch
NATIONAL INSTRUMENTS NI-DAQ 7 DOCUMENTATION & SW COMBO KIT VER. 7.0
National Instruments NI PXI-6025E DAQ
From Hungary
National Instruments NI PCI-6534 Data Card USED
From Hong Kong
National Instruments USB DAQ module NI-9211 4-channel TC module
NATIONAL INSTRUMENTS NI Digital DAQ Crad Used PCI-DIO-32HS PCI-6533
From Hong Kong
National Instruments NI BNC-2110 Shielded Connector Block DAQ Device
Customs services and international tracking provided
National Instruments NI BNC-2110 DAQ / DAS sheilded cable connector 185124f-01
Data Acquisition system monitor digital converter block
Used NATIONAL INSTRUMENTS NI PCI-DIO-32HS PCI-6533 Digital DAQ Crad
From China
NI PXI-4495 , National Instruments 24-Bit, 204.8 kS/s, 16 Inputs,ADC DAC DSA DAQ
From Slovakia
*Tested* National Instruments NI PXI-6052E 16-bit Multifunction DAQ Module
Customs services and international tracking provided
National Instruments PCI-DIO-96 PCI-DI0-96 182920D-01 NI Digital I/O DAQ Board
From Israel
NI National Instruments TB-2705 Screw Terminal Block for PXI DAQ Modules
NATIONAL INSTRUMENTS NI-DAQ 7.3 Documentation Software Kit 501177E-02
Customs services and international tracking provided
NATIONAL INSTRUMENTS NI-DAQ SOFTWARE Ver. 7.0.1
Customs services and international tracking provided
National Instruments NI PCI-6534 Data Card Tested
From China
National Instruments NI PCI-6014 16-Bit Analog Input Multifunction DAQ
From China
NATIONAL PCI-DIO-32HS PCI-6533 INSTRUMENTS NI Digital DAQ Crad Used
From Hong Kong
NATIONAL INSTRUMENTS NI PCI-DIO-32HS Digital DAQ Crad FREE SHIP
From Hong Kong
ONE NATIONAL INSTRUMENTS NI PCI-6534 DATA CARD TESTED Mint Condition NICE!!!
From China
National Instruments NI PCI-6281 multifunction DAQ board
From China
NATIONAL INSTRUMENTS NI PCI-6534 DATA CARD
From Hong Kong
National Instruments SHC68-68-EP Shielded Cable 186838C-01 68 Pin 1m NI DAQ
NATIONAL INSTRUMENTS NI-DAQ 7 DOCUMENTATION & SW COMBO KIT VER. 7.3 (March 2005)
National Instruments SH68-68-D1 Shielded Cable, NI DAQ, 5 meters, p/n 183432A-05
National Instruments NI PCI-6251 Hi-Speed DAQ Free Ship
From Hong Kong
National Instruments NI PXI 6031E 100kS/s 64-Input 16-Bit Multifunction DAQ work
From China
ONE USED NATIONAL INSTRUMENTS NI PCI-6534 DATA CARD TESTED Mint Good Condition
From China
National Instruments NI PCI-7831R DAQ Multifunction
From China
National Instruments NI PCI-6534 Data Card USED Free Shipping
From China
*Tested* National Instruments NI PXI-6025E Multifunction DAQ 16AI 2AO 32DIO
Customs services and international tracking provided
*Tested* National Instruments NI PXI-6123 8-Ch Hi-Speed Simultaneous 16-Bit DAQ
Customs services and international tracking provided
USB DAQ MF126 DATA ACQUISITION 14AI 4AO 10DIO PWM COUNTER with Software & Driver
NEW- NATIONAL INSTRUMENTS NI-DAQ 7.4 Documentation Software Kit 778837F-030
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National Instruments NI TB-2705 Screw Terminal Block for PXI DAQ Modules - used
Customs services and international tracking provided
National Instruments NI 6035E PCI-6035E 16-Bit Multifunction DAQ 16-b +Cable
NATIONAL INSTRUMENTS NI-DAQ USER MANUAL
National Instruments NI PCI-7831R DAQ Multifunction RIO Virtex-II 1M Gate FPGA
