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Control.com topic...
Process Control
Topic: Communications systems and equipment.
from the Forum department...
RS485 to Analog Input Conversion
Posted by cherrypi on 20 October, 2014 - 3:38 am
Is it possible to convert (multiple) readings being transmitted through RS-485 communication to analog signals?
Topic: Power generation equipment control.
from the Power operation department...
High pressure turbine bypass system
Originally posted by Zouhen on 17 October, 2014 - 5:19 pm
During Turbine Low vacuum Trip what is the position of high pressure turbine bypass control valve
New Replies:
first, I have never seen a CCP, nor a unit with multiple bypass. I have worked nukes with a single...
Dears, Actually turbine hp bypass cv when Turbine low vacuum trip it will open and keep the...
Dear Zouhen In this case when Low vacuum Turbine Trip, both LP and HP pressure turbine bypass...
Posted by Jürgen Rose on 19 October, 2014 - 7:38 am
Power Plants on the Internet? Really? The latest research that generated the map is being presented at the 4SICS conference in Stockholm.
Topic: Motion control, servos, steppers, etc.
from the struggling here... department...
Rotary Die Cutter Help
Posted by Jeremy Ross on 16 October, 2014 - 2:25 pm
Looking for help on an application.
Posted by Ankur Gajjar on 15 October, 2014 - 2:51 am
Auto adjust of ABB TZIDC positioner stops in calibration mode with "timeout" error!
Topic: Continuous process industries, DCS questions.
from the Instrument department...
Fail safe position for pressure regulating valves
Originally posted by Saeid on 25 October, 2009 - 12:47 pm
Determining fail safe position in Pressure regulating valves
New Replies:
Normally valves controlled by the controller will have a hexagon or square shaped image on top of...
Generally if either the air supply or the control signal (usually 4-20 ma or power to a solenoid...
All i need to ask about fail safe position that is shown on the P&ID. to which failure it...
Topic: Power generation equipment control.
from the DCS control department...
DCS Control of Power Plants
Originally posted by George on 8 October, 2014 - 10:24 pm
Scope of DCS programming in a Power Plant
New Replies:
ha ha...Well Said CSA, What i expressed was an engineers headache (you might be too familiar...
George, I think many of us would take exception at some of your statements about testing before...
It's always been a bit of wishful thinking on the part of the marketing guys ... When I started...
Sorry about the typos (was sleepy).. :)...
> The original definition was "Distributed Control System! Chill,...
Roy, Yes its kind of funny that it calls itself distributed. Well, as you may know already,...
The original definition was "Distributed Control System! Phil...
Roy, > How come they always like to centralize it? This one's easy--DCS stands for: ...
> One more reason to keep the subsystem control with the subsystem supplier: > This also...
Thank you CSA for your view, I'm sure that it may take some time as well as expertise to achieve...
One more reason to keep the subsystem control with the subsystem supplier: This also lets the...
George, I don't understand what you're trying to describe at all; sorry. One company might be in...
Thanks Kevin and CSA for the reply, Why this question arises in the first place is that many of...
Topic: Power generation equipment control.
from the Instrumentation department...
Startup Gas Turbine
Originally posted by GE mark vi on 4 October, 2014 - 6:24 am
Is there is any provision for startup gas turbine with external pushbutton (aux.PB)
New Replies:
All, Just to clarify--the Speedtronic (Mark VI in this thread, per the original poster)...
Yes there is. You'll have to just use the Push button connected as a Digital input to a remote...
Topic: Continuous process industries, DCS questions.
from the Applications department...
Non-Nuclear Density Meter For Slurry
Originally posted by Austin Bell on 24 April, 2012 - 2:27 pm
Does anybody know of a non-nuclear continuous in- line density meter for slurry?
New Replies:
Take a look at www.ultimompd.com. That's what we are all about....
Originally posted by igor on 24 March, 2012 - 3:52 pm
differential pressure transmitter (orifice plate) measuring flow with the square root function enabled
New Replies:
I like what David Todd said about calibrating the transmitter in linear mode (techs are very...
Topic: Engineering and workplace issues.
from the Forum department...
Measuring Principle of Field Instruments
Originally posted by ahamednivas on 10 October, 2014 - 5:58 am
Regarding the selection of Instruments and its measuring principle
New Replies:
> I want to understand that how measuring principle of an instrument would be > decided like...
Tony Kuphaldt's massive tome on instrumentation, "Lessons In Industrial Instrumentation,...
Topic: Application Questions and Problems
from the Right way to do this? department...
Pump Running Indication on Control Circuit
Originally posted by Stumped on 10 October, 2014 - 4:19 pm
How can I properly wire my pump panel to show that when the pump is actually running I get an indicator on my PLC/HMI.
New Replies:
This can be achieved in multiple ways. I guess you are already reading the Ampere load to the...
Topic: Power generation equipment control.
from the Forum department...
Tubing and Piping
Originally posted by Gary on 9 October, 2014 - 2:28 pm
Any differences about the size standard for piping and Tubing?
New Replies:
Gary, I used my preferred Internet search engine with the following search term: "what...
Topic: Power generation equipment control.
from the Gas Turbine Controls department...
Gas Turbine First Fire
Originally posted by George on 7 October, 2014 - 6:49 am
Pre-startup activities and sequence for first fire of GT.
New Replies:
PLC Programmer, There's loop-checking; there's usually some kind of crank checks (spinning the...
CSA Sir, What are the stages of testing a Gas Turbine, before it is ready? George Sir, ...
Yes CSA, I am involved with some of the major OEMs. But currently confining myself to minor...
Thanks CSA, Its was a great favor. Have some idea now on where to start. Might be disturbing...
George, First fire of a gas turbine generally means that you have already...
Topic: Sensor technologies.
from the Instrumentation Design department...
Using a Standpipe with DP Level Transmitter
Originally posted by TANWEER on 3 September, 2014 - 8:57 pm
Can we use a standpipe with a DP type level transmitter?
New Replies:
Hey there, saw some info about this kind of thing on this blog, maybe it has the answer you're...
Topic: Engineering and workplace issues.
from the Automation List department...
Why 4-20 ma is used in Analog Signals?
Originally posted by sreeraj on 3 June, 2007 - 12:25 pm
Why 4-20 ma is used in Analog Signals?
New Replies:
Hey there, found some seriously useful info about this on a blog here ...
Topic: Continuous process industries, DCS questions.
from the Instrumentation and Control department...
Calculating Pressure Transmitter Range
Originally posted by Kamaraj on 21 August, 2014 - 7:42 am
How can we test Rangeability of Pressure Transmitter?
New Replies:
Ok thanks for the tip. Here is the proper URL:...
Topic: Power generation equipment control.
from the department of redundancy department...
Interfacing with a GE Mark VI
Originally posted by john on 13 May, 2012 - 8:02 am
What are the best practices in interfacing with a GE Mark VI?
New Replies:
John, If you are still looking for a product that interfaces with GE Mark VI, please contact...
Originally posted by Sakthi Venkatesh on 27 September, 2014 - 5:00 am
After calibrating, why we are reversing the range for Level Transmitter while measuring Level?
New Replies:
There still seems to be confusion with regards to the pressure and temperature that will influence...
The main reason is so 4 ma is lowest level and 20 ma is highest level. This practice goes back to...
grab your steam tables and run a test calc. for a HP boiler with the wet leg temps at ambient...
Topic: Engineering and workplace issues.
from the operation department...
Liquid Fuel
Posted by mouhanad on 7 October, 2014 - 6:44 am
Liquid fuel valve is very little opened while the unit is working on gas
Topic: Continuous process industries, DCS questions.
from the Forum department...
Adaptive Resonance Theorem
Originally posted by Kun Nguyen on 3 October, 2014 - 10:30 pm
Application of Adaptive Resonance Theorem (ART) in fault detection of plant instrumentation?
New Replies:
That sort of intelligent system monitoring and control has been described in the research...
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