Control valves tuning

... Handbook CONTROL VALVES AND TUNING Page 1 of 13 Control Valves and Tuning Table of Contents Control Valves AND TUNING 1 Control Valves AND TUNING 2 RELATIONSHIP OF MAJOR COMPONENTS 2 Control ... INTERACTING CONTROL LOOPS 11 DEFAULT CONTROLLER TUNING PARAMETERS 11 CONTROL LOOP SCAN RATES 12 PID ALGORITHM DEFAULT TUNING CONSTANTS 13 Berry’s Commissioning Ha...

Ngày tải lên: 12/03/2014, 16:34

... pattern and angle pattern control valves. The nominal sizes included are DN 15 to DN 400 for straight pattern control valves and DN 25 to DN 400 for angle pattern control valves. 2 Normative references The ... 558-1:1996, Industrial valves – Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems – Part 1: PN-designated valves EN 558-2:1996,...

Ngày tải lên: 25/12/2013, 11:08

... of final control element must implement the strategy selected by the controller. The most common final control ele- ment in the process control industries is the control valve. The control valve manipulates ... possible to the desired set point. Many people who talk about control valves or valves are really referring to a control valve assembly. The control valve assembly...

Ngày tải lên: 14/03/2014, 19:43

... positionneurs sur les actionneurs linéaires Industrial-process control valves – Part 6: Mounting details for attachment of positioners to control valves – Section 1: Positioner mounting on linear actuators Numéro

Ngày tải lên: 04/04/2014, 11:29

... positionneurs sur les actionneurs rotatifs Industrial-process control valves – Part 6-2: Mounting details for attachment of positioners to control valves – Positioner mounting on rotary actuators Numéro ... positionneurs sur les actionneurs rotatifs Industrial-process control valves – Part 6-2: Mounting details for attachment of positioners to control valves – Positioner mount...

Ngày tải lên: 04/04/2014, 11:29

... two-way, globe-type control valves. Publication 534-3-2 (1984): Part 3: Dimensions, Section Two - Face-to-face dimensions for flangeless control valves except wafer butterfly valves. . Publication ... valve. These definitions are only applicable for sliding stem valves and for eccentric rotary type valves. For symmetrical rotary type valves (e.g., baii and but- terfly...

Ngày tải lên: 04/04/2014, 11:30

... régulation Industrial-process control valves Part 8: Noise considerations Section One - Laboratory measurement of noise generated by aerodynamic flow through control valves O CE1 1986 Droits ... flanged, two-way, globe-type con- trol valves. 534-3-2 (1984) Section Two - Face-to-face dimensions for flange- less control valves except water butterfly valves....

Ngày tải lên: 04/04/2014, 11:31

... : 1987, Industrial-process control valves - Part 7: Control valve terminology and general considerations. IEC 534-2-3: 1983, Industrial-process control valves - Part 2: Flow capaclw ... 534-8-4, Industrial-process control valves - Part 8: Noise considerations - Section Four: Prediction of noise generated by hydrodynamic flow through control valves (unde...

Ngày tải lên: 04/04/2014, 11:32

... flanged, two-way, globe-type control valves. Pan 3: Dimensions - Section Two - Face-to-face dimensions for flangeless control valves except wafer buttediy valves. Part 4: Inspection ... 1917, pp. 94-98. Stiles, G.F., "Sizing Control Valves for Choked Conditions Due to Cavitation or Flashing", ISA Handbook of Control Valves, Instrument Society of...

Ngày tải lên: 04/04/2014, 11:33

... régulation Industrial-process control valves Part 8: Noise considerations Section One - Laboratory measurement of noise generated by aerodynamic flow through control valves O CE1 1986 Droits ... flanged, two-way, globe-type con- trol valves. 534-3-2 (1984) Section Two - Face-to-face dimensions for flange- less control valves except water butterfly valves....

Ngày tải lên: 04/04/2014, 13:00