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Thermal Overload
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
Electrical Engineers do it with less resistance.
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diagnostic alarm - voter mismatch L74CR in <R> processor
New Replies:
i use the viewq command to check the value of L74CR in each core, this is the result :
## Unit ...
Master View Floppy disc out of order...
New Replies:
The DDR (Disk Drive Replacement) unit replaces the old 5.25" floppy disk drives, DSMD 113 and...
By zahid ali khan on 18 August, 2009 - 10:52 pm -
Hi Dear,
you can get solution on http://www.tessem.nu
Regards,
Zahid Ali Khan.
ph # 0092 300...
Instrument Air Calculations for Utility
Discussion about osisoft pi
New Replies:
OSI PI is the market leader but suffers from a few downsides one of which you have discovered with...
I've used Wonderware InSQL extensively. About 2 years ago I pushed the decision to migrate our...
PE Control Systems Exam 2009
Need help to learn basics of accessing process history databases through different programming languages (VBA, MATLAB, C++ etc..)
Problem in putting Invensys Connoisseur APC in closed loop
New Replies:
By DaveMH on 18 August, 2009 - 8:14 am -
Assuming the SCM manipulates the right parameters in the right way and can actually put the APC...
Help in finding the level on ammonia on a closed tank, using a Druck DPI 610
Details about segmental orifice plate
I want to procure IS passive barriers for analog inputs like pressure, temp and flow transmitters. Flow transmitters are basically vortex type transmitters with local display cum tantalizer in a separate enclosure.
ESD control logic and time delay when closing valves
New Replies:
By Tom Chubb on 18 August, 2009 - 5:38 am -
Further adding to Francis regarding the vent pipework, if you are able to hear it venting...
By ESD on 18 August, 2009 - 12:22 am -
Ok Ashraf
It has been confirmed by our engineering that the PLC logic used cannot be other than...
Adding a bit to what Ashraf said:
First is it the valve or the ESD causing the delay?
It is...
By Gray on 17 August, 2009 - 3:56 am -
Hi Hisham
If your SOV is de-energizing and the internals are OK and the valve actuator is still...
Hisham,
The answer is YES .. this could be logical. and the answer could also be NO .. this is...
By Phil Corso on 16 August, 2009 - 10:08 am -
Hisam,
there is no need to slam a valve shut if the machine or process the valve interrupts is a...
i would like to know is it an punmetically controlled valve?
then there should be some delay ...
By Hisham on 15 August, 2009 - 10:58 am -
Thanks Allan,
I checked with our engineering and they confirmed that their should not be any...
Not sure what the last two letters mean but if ESD stands for "Emergency Shutdown Valve"...
from the Control & Instrumentation department...
How to optimize the usage of Instruments Compressed Air for better plant efficiency
In some instrument or instrumentation design, compressed air is designed to bleed (release to atmosphere continuously). As it was designed in such manner, to maintain compressed air supply pressure is quite a challenge for long and continuous operation
Point details retrieval from ESVT.
GE Frame 5 limited below Rated Power
New Replies:
With miniscule details, it is very difficult to comment. Provide more details for a to-the-point...
Dear Colladjl, as you are well aware the more information you provide, the better information this...
How to calibrate Gas Vortex flow meters, with Gas or liquid?
New Replies:
By wboyes on 16 August, 2009 - 12:00 pm -
If you did not specify calibration on the correct fluid, what you get is the factory standard...
What is the meaning of KSTGRTULJA, KSTGRTLLJA and KSTGTCJA in a MARK-V-LM2500-DLE application. What does "PU/s" and "secrt" in CONST_Q-file stand for?
New Replies:
By Marco on 16 August, 2009 - 9:45 am -
Dear Roy Matson,
Dear CSA,
thanks for writing and for trying to give me some good advice. I...
>I give up, what is it?
I second that remark.
Presuming the Mark V was configured...
By Roy Matson on 13 August, 2009 - 10:45 am -
I give up, what is it?...
Bailey DCS (infi90) training and support these days???
New Replies:
Although not stated specifically, the previous post from "dlanor" appears to have been...
Flow measurement of highly viscous material as line is over sized and this velocity is low,thereby decreasing accuracy
New Replies:
By wboyes on 14 August, 2009 - 2:27 pm -
I would take a serious look at CiDRA flow meters. They are unique and can measure void fraction and...
By Rohit Chandak on 14 August, 2009 - 12:29 pm -
At the first thought similar to David but I think over sized pipe with low velocity viscous fluid...
By Roy Matson on 14 August, 2009 - 1:27 am -
What about a straight tube coreolis, that shouldn't create a bottleneck, more expensive than a mag...
Need to find a signal conditioner to convert 0-60KOhms to a 4-20mA or 0-10V output.
New Replies:
By Don Lupo on 14 August, 2009 - 7:52 am -
Can you let us know more about the application/sensor? Is this a thermistor, high conductivity...
By M Griffin on 14 August, 2009 - 1:21 am -
An Analog Devices 7B isolator (or one of the clones from Dataforth or someone else) will give you...
By Roy Matson on 14 August, 2009 - 1:18 am -
Most of the resistance to Current transducers are actually Voltage to Current taking the slidewire...
By curt wuollet on 13 August, 2009 - 7:12 pm -
Get a dual OPAMP and set one side up as a 100uA constant current source and the other side as a...
Return strings from Modbus simulator application differ from that of HVAC system harware
New Replies:
By M Griffin on 14 August, 2009 - 1:38 am -
You haven't really given us enough information to go on. The most common problem that people have...
By Mark on 13 August, 2009 - 8:55 pm -
Hi,
I do not see enough information to determine exactly what is wrong. One thing I do see is...
It is not unusual to have byte reversal issues. One of the devices, Host or Slave, should have a...
By Carl on 13 August, 2009 - 8:41 pm -
The register number could be off by a one, depending on whether the registers are numbered from...
Need some Control Screens for a Supercritical power plant.
New Replies:
By Pong on 13 August, 2009 - 5:30 am -
I work in coal fire 2*717 MW power plant and my email ID is:
pongtawat_k [at] hotmail.com...
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