据具体生产工艺的要求,主要考虑当气源供气中断或调节阀出现故障时,调节阀的阀位(全开或全关)应使生产处于安全状态。压力信号中断时,应保证设备和操作人员的安全
电/气阀门定位器的作用。
提高气动执行机构的灵敏度和精度,改善气动执行器的静特性。下列影响气动执行机构的灵敏度和精度的因素均可减小;
执行机构部分的薄膜和弹簧的不稳定性和各可动部分的摩擦力;
当调节阀阀前阀后压差过大时所产生的不平衡力;
由于调节介质的黏度大或带有悬浮物、固体颗粒等对阀杆移动所产生的阻力;
加快阀杆的移动速度,减小系统的传递滞后。
VMIC VMIVME-7592 Single-Slot Pentium / AMD-K6 Processor
Elma 32VS-0413-T07J12-P250 Type 32 Portable VME Chassis
Elma 32VS-36313-T05J12-P250C Type 32 Portable 5-Slot
Touch Controls / Kontron 12” Touch Panel Display
Thales / Matrix MD-CPU330 Board PN: 9007-30-93 VME
Precision Scientific 253 Circulating Water Bath 66600
Arkay Dual-Dri Professional 150 Table Top Drier Fiber
Fujitsu FC9607MPD1 Microprocessor FLM 2400 ADM
CCS LFV2-100RD LFV Series Coaxial Lights for LED Lights
National Instruments (NI) VME-MXI-2 VMEbus Extender VME
Sorvall DuPont H1000B Tabletop Centrifuge Rotor
Hewlett Packard HP A6795A 2Gbps PCI Fibre Channel
IMED Gemini PC-1 Volumetric Infusion Pump w/ Controller
Allen Bradley 1771-DA/A 1771-DAA ASCII I/O Module
Alliance Sys CSU DSU Adit 600 TDM Control FXS Modules
Parker Bayside GR090-X1A1X-001 Right Angle Gearmotor
VAT 24344-QA11 w/ 24344-QA41 Vacuum Angle Valve
IDC RD1205A-12-MS5-MC-Q Rodless Actuator Ball Screw
Novellus CMP 676 Polisher Ind Computer SpeedFam C2C
Novellus CMP 676 Polisher Ind. Computer SpeedFam MP2
Beckman DU-40 DU40 Spectrophotometer
Systems Intergration + Inc. 5-Solt VME Tower Enclosure
Force SYS68K/ISIO-2 I/O Controller Board PN: 310031
Markem 526 Marking Machine w/ Footswitch
Markem 527 Automatic Offset Marking Printing Machine
Motorola Tel Rptr Interface TRIB-1 Telecom Networking
Motorola Phone Line Interface PLIB-1Telecom Networking
Duplo DF-520 Automatic Paper Folder Folding Machine
Zenith ATSC Professional Decoder System DTVDECODER-H
Furon CDV2-F88NC & SMDV-FF16M-L-P Valve Assy w/ Manifol
Instrumentation Labs ILL 443 Digital Flame Photometer
Motorola MVME181-1 MVME 181-1 VME Module
3M ScotchFlex Assembly Press Model 3339-1 w/ 3442-1
3M ScotchFlex Assembly Press Model 3339 Hand Press
3M ScotchFlex Assembly Press Model 3335 Hand Press
BioAnalytical Systems BAS RXYT X-Y Chart Recorder
Therakos UVAR Photopheresis System Johnson & Johnson
T.C. Jarrett Embedding Curing Oven & Cut-Off Machine
Tandberg Educational IS-10 Language Laboratory Audio
Sigma Systems 52/80AC Environmental Test Chamber WORKS!
Manix K-25 Lead Forming System – Base Unit Only
Haemonetics Cell Saver 3 Plus Blood Recovery System
Grass Instruments Co. 8-10C Electroencephalograph
Grass Instruments Co. 8-10B Electroencephalograph