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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
For some reason, this fortune reminds everyone of Marvin Zelkowitz.
RSS Feed
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Need help to learn basics of accessing process history databases through different programming languages (VBA, MATLAB, C++ etc..)
New Replies:
Your question depends on what the platform and design of the database. You need to clearly define...
By webber on 26 August, 2009 - 9:00 am -
Hello?
Since there has been no response I wonder if there is a more appropriate forum to post...
Fan Blower Motor control using soft starter
New Replies:
Lets get simple with this guys. Replace one of your bearings, does not matter which, with a sprag...
By Phil Corso on 29 August, 2009 - 11:56 am -
Responding to JulesCeasar's 29-Aug-09 (04:54) comments regarding fan "windmilling?"
...
what to do with Proximity probe damage on Bearing # 1 on GE Frame V gas turbine with no provision for new installation?
New Replies:
The typical damage caused during gap voltage adjustment is to the tip of the proximity probe; it...
Need guidance to select suitable flow meter
New Replies:
By RK on 29 August, 2009 - 10:14 am -
Dear Mr.David,
1. We need battery operated rate totalizer/Flow meter to monitor instantaneous...
Dear RK,
When you say that the existing meter (turbine) could not measure the "low...
By David on 26 August, 2009 - 8:31 am -
Siemens has a portable battery powered clamp-on ultrasonic flow meter for which pressure is not an...
Problems exposing BACNet points from Notifier Alarm BACNet Gateway.
New Replies:
Can't you convert the Bacnet to Modbus? Fieldserver does it i think....
How to calibrate Gas Vortex flow meters, with Gas or liquid?
New Replies:
I know you can calibrate the Yokogawa DYA vortex flow transmitters with a frequency generator.
...
Vortex shedding is a function of the viscosity at the edge...
It is quite usual for some gas flow meter types to be water calibrated or calibration checked. It...
Calibration procedure for high capacity tanks
New Replies:
Is there any official document which shows the minimum weight required to calibrate any scale...
Fuji Compact Controller PDA3, PDA2, need software
Cascade controlling of Danfoss VLT8000 VFds.
New Replies:
By Ben Janvier on 28 August, 2009 - 9:24 pm -
Looks like you have a split-range control logic where the pressure controller output (0-100%) is...
Looking for a PC run pressure controller with a range of 0-200mmHg max.
Need Average value of process parameter in DltaV Trend Display
Is a Separate Earth for Intrinsically Safe Instruments required?
New Replies:
By Susi Sukaisih on 27 August, 2009 - 8:54 pm -
Dear Dick,
I'm new in Instrumentation, I need some reference about ISE Bar, how to Install it,...
DCS Installation questions
New Replies:
By George Buckbee on 27 August, 2009 - 9:02 am -
In "Automation Applications in Bio-Pharmaceuticals", we address the topic of control...
hi!
I am also in the same road as you are on. well i have a PDF file which gives a comparative...
Comparison of DP and torque tube type level control on slug catcher.
New Replies:
By Gerald Gilbert Browning on 26 August, 2009 - 7:07 am -
I recently worked in the detailed project for an gas treatment plant here in Brazil, and the...
one of the three drum level transmitter behaves abnormally
New Replies:
With refer to your reply I am again explaining my problem. We have three differential pressure...
Interfacing remote PLC through telecommunications line.
New Replies:
Yes, that is what we are doing regularly. In most cases we use Modbus TCP for data acquisition. But...
Yes we did such thing for one dam project in karnatak, india. Contact to pathan [at] godrej [dot]...
Problem communicating to Daniel GC through BridgeMux BM85 to a PC on Modbus RTU RS485/232 link
New Replies:
By Amar Bin Halim on 24 August, 2009 - 8:17 pm -
On both ends of your RS-232 cable (DB9) jumper the RTS (pin 7) with the CTS (pin 8); and jumper DSR...
GE Frame 5 limited below Rated Power
New Replies:
Hello MIKEVI,
Thanks for your detailed response. Once, I get to the site I will have more...
I have a S7 PLC network with PROFIBUS protocol. There are WinCC HMI PC. How to integrate additional field devices by extending PROFIBUS
New Replies:
Please help me by your kind suggestions,
Thanks...
Difference between PLC & DCS
New Replies:
By anynomous on 24 August, 2009 - 2:02 am -
Taking this discussion in slightly lighter mood the difference between DCS & PLC is , the same...
By Dick Caro on 21 August, 2009 - 11:26 am -
Clearly written by someone who does not understand petrochem process control. SCADA is great for...
By P Khurana on 21 August, 2009 - 10:44 am -
I seriously think that there is not much difference left between the SCADA and DCS now a days. But...
PE Control Systems Exam 2009
New Replies:
By Elaine Tee on 24 August, 2009 - 12:51 am -
Hi - I am preparing to study for this exam. Have you started??
Elaine. ...
Problem in putting Invensys Connoisseur APC in closed loop
New Replies:
Dear MH and Marc,
Thanks for the info. I'm not a DCS/Automation Engineer. I'm still learning on...
Here are sme tips that may speed up your SCM process:
1) Set Step MINTIME to zero if it is not...
Dear Kuman,
I am not sure we have understood each other so bear with me for a moment.
My...
Dear DaveMH,
It is already in CM (in this case C300). However, the way the SCM is structured is...
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.
Problem Selecting Mass flowmeter size for measuring thick liquid
New Replies:
You may not have noticed this but in recent times coriolis meter manufacturers have started showing...
Flow measurement of highly viscous material as line is over sized and this velocity is low,thereby decreasing accuracy
New Replies:
By JMW on 20 August, 2009 - 9:42 pm -
I'd suggest what you actually have is a laminar flow profile with much of the fluid moving very...
Help in finding the level on ammonia on a closed tank, using a Druck DPI 610
New Replies:
By Steve Hoffmann on 20 August, 2009 - 12:32 pm -
Use of a tank roof mounted Honeywell-Enraf series 854 servo gauge, you can't go wrong. check out...
By Roy Matson on 19 August, 2009 - 4:26 pm -
I assume your tank is under pressure so you will need a DP cell with the LP tap connected to the...
Instrument Air Calculations for Utility
New Replies:
By Roy Matson on 19 August, 2009 - 4:14 pm -
The rule used to be 1 cfm per instrument.
These days instruments use less air but if you allow 1...
Discussion about osisoft pi
New Replies:
By Oliver on 19 August, 2009 - 1:12 pm -
Yes, OSIsoft has been around for a long-time, long enough to continue profiting from the...
reverse power relay operation
New Replies:
By Dheeraj Kumar on 19 August, 2009 - 6:36 am -
Will there be a usage of reverse power relay between two grids of two different states?????????...
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