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The threads that wouldn't die...
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
Fortune
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that is not being talked about.
-- Oscar Wilde
that is not being talked about.
-- Oscar Wilde
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How to select a control valve?
Need explanation of Speedtronics partial load control
New Replies:
By definition, Base Load is full load. Anything less (preselected load, manual setting) is partial...
DEHN Blitzductor CT ex(i) or DEHNconnect RK (i) Surge arrestor Selection in Ex(i) loop
Two OIU's crashed at our facility and no matter what parts I throw at them, they won't come back.
Problem with forced coils in Quantum Proworx
I want to know the difference between barg and bara.
New Replies:
By Bruce Durdle on 5 November, 2009 - 1:51 pm -
Or you can use the standard value of atmospheric pressure - 1.01325 barA.
But if you are...
By Vallaban on 5 November, 2009 - 2:21 am -
For getting the approximate value while converting bar g to bar a then bar a = bar g + 1.02. That...
looking for vibration monitor
New Replies:
By Symphony on 5 November, 2009 - 7:55 am -
Can anyone tell me the vendors/distributors of Solar Turbine or Bentley Nevada....
Operating the Turbine Generator on Preselected Load
New Replies:
Preselected Load Control is really just a lazy man's way of not having to...
By Walter on 5 November, 2009 - 5:21 am -
Thanks for responding this post.
The question is about the behavior of the generator against big...
What causes the distrubances? Frequency excursions? Fuel supply disruptions? Dirty oil?
...
Modbus and HART protocol connection
New Replies:
By K.Rajasekaran on 5 November, 2009 - 5:12 am -
Pl visit www.renuelectronics.com. You can see the product required. The model is Gwy-800....
Most reliable way for control of Waste Heat Recovery units on Gas Turbine Outlet
New Replies:
Trying to control gas turbine exhaust heat input to a waste heat recovery boiler with dampers is...
Need for an help to choose the best fieldbus in a Generating Power Plant
New Replies:
By James Powell on 4 November, 2009 - 1:32 pm -
Both Foundation Fieldbus and PROFIBUS have been used successfully to do close loop control. One of...
By Dick Caro on 3 November, 2009 - 6:36 pm -
The comments made by Powell and Steinhoff are very true for modern versions of Profibus and...
By James Powell on 3 November, 2009 - 1:19 pm -
Dear Fabrizio,
For comparing FF and PROFIBUS, there is a good white paper on...
Thank you all for the answers, but I have a new issue: I know that FF premise to substitute easily...
By Steinhoff on 3 November, 2009 - 3:27 am -
> Dear Mr. Vahid: While Profibus DP and Profinet are excellent fieldbus technologies, they have...
By Dick Caro on 2 November, 2009 - 2:24 pm -
Dear Mr. Vahid: While Profibus DP and Profinet are excellent fieldbus technologies, they have not...
By Vahid on 1 November, 2009 - 1:03 am -
Dear Mr. Jonas,
Is it possible to explain more about this difference (Isochronous) and the...
By Steinhoff on 31 October, 2009 - 11:28 am -
PROFIBUS-DP V2 provides also precisely isochronous operation. This is
also the case with ProfiNet...
By Jonas Berge on 31 October, 2009 - 3:13 am -
Dear Fabricio,
I assume you are talking about PID control loops here? In my personal opinion...
Fire & Gas detection and alarming systems in Chemical Plants.
New Replies:
By syurish on 3 November, 2009 - 8:38 am -
Please check one of them here:
www.sensorsportal.com/HTML/DIGEST/october_09/Gas_sensors.htm...
Hi
one of the famous gas detection manufacturer is MSA , below is the link:
...
Spurious diagnostic alarms from MKV panel
Trying to use a Microcor III PR controller made by Coreci. Age unknown. The controller works in manual mode, but I am unable to decipher tuning and programming codes without a manual. Any help locating a manual for this controller would be greatly appreciated.
New Replies:
By Selene at Gefran USA on 2 November, 2009 - 2:43 pm -
Hi,
User's manuals and datasheets for obsolete Gefran products are available online at...
need to scale down the voltage in to 0 - 9 for running the motor in safe side
New Replies:
By M Griffin on 2 November, 2009 - 2:07 pm -
The normal method of doing this is to use a signal conditioner module with a DC input and a DC...
Can we use a DP transmitter to measure the water level in a vacuum tank? If not, what is the solution for it?
New Replies:
By Roy Matson on 2 November, 2009 - 12:54 pm -
Is this something that just started to occur?
Are you the original poster?
Is the probe in a...
By David on 31 October, 2009 - 11:03 pm -
Ultrasonic requires a physical gas medium (like air) for propagation; ultrasonic does not work in a...
By Bart Schaminee on 31 October, 2009 - 10:49 am -
More expensive, but a better measurement mechanism for measuring level fluid in vacuum environment...
By IMaNK on 30 October, 2009 - 7:51 pm -
it is a Geothermal Power Plant, and we have 2 unit (2 condenser). One level control using DP...
Cv rating of pressure regulators
New Replies:
By Roy Matson on 2 November, 2009 - 12:31 pm -
Most of the regulators I buy are rated in Volume units, gallons per Minute, CFM or the metric...
Hello
The Cv is the flow coefficient of the pressure regulator or the control valve and it is...
Correct position for flow measurement?
New Replies:
By wboyes on 1 November, 2009 - 7:05 pm -
You want to put the measurement device as far away from sources of perturbation of the flow as...
By Roy Matson on 1 November, 2009 - 1:28 am -
It's more common to see the flow element upstream of the valve but provided there is sufficient...
Standards for Safety PLC in Steam Boilers
New Replies:
By Hase on 1 November, 2009 - 12:39 pm -
I'm really surprised that there aren't some widely accepted standard for burner management system...
By Bart Schaminee on 31 October, 2009 - 10:59 am -
Steve,
I agree with you. Go for best practice of segregated SIS per boiler and select a small...
abb 800xA Communication problems
New Replies:
By PChandra on 1 November, 2009 - 9:13 am -
Hi,
i Have gone thr such a situation more than 10 times. but your problem is not clear to me.
u...
By Mohanad Babekir on 31 October, 2009 - 8:24 am -
Hi guys;
We running power plant with 800xA system, the plant consist of 6 engines, the problem 2...
TTL encoder and very fast counter inputs
New Replies:
First you need to know what the maximum frequency is you are going to measure with that encoder!
...
establish the HART communication with Berthold multi detector HART output loop.
New Replies:
By Jonas Berge on 31 October, 2009 - 3:13 am -
Is there a minimum of 230 ohm resistance in the 4-20 mA loop? If not HART will not work - if not,...
How to edit or view the Namur settings
Trying to find a Positioner for a rotary actuator (Keystone 79u) that works off of Profibus DP Communication.
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