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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
Two wrongs don't make a right, but three lefts do.
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Need for an help to choose the best fieldbus in a Generating Power Plant
New Replies:
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...
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 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...
By IMaNK on 29 October, 2009 - 7:45 pm -
How about the direct type condenser, which the cooling water directly contact with steam from...
Fire & Gas detection and alarming systems in Chemical Plants.
Standards for Safety PLC in Steam Boilers
New Replies:
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...
How many PLC's for 4 boilers? has nothing to do with the BMS requirement or the SIL requirement.
...
By SC on 27 October, 2009 - 2:49 pm -
Hi
We operate four 122te/hr Nat Gas and Hydrogen fueled boilers that were built a few years ago...
Thanks .. Mr. Allan Evans,
In reply to your post:
The country is India.
The 'balance...
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!
...
abb 800xA Communication problems
New Replies:
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...
Correct position for flow measurement?
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,...
By David on 29 October, 2009 - 6:39 pm -
What model level device are you using? LB490?...
By Thangs on 27 October, 2009 - 4:39 am -
In multi detector level measurement, the axillary unit is wired to Main unit through RS485 and the...
By David on 26 October, 2009 - 1:49 pm -
1) Are both detectors are on the same 4-20mA link back to the control system?
It isn't clear...
How to edit or view the Namur settings
New Replies:
By kareem on 31 October, 2009 - 1:56 am -
Dears,
any reply. help pls...
Thanks alot for you reply,
Actually we tried to view if the namur is enabled in our Emersson...
By Bud on 26 October, 2009 - 10:27 pm -
That's a really good question.
I know that Honeywell sells an optional electronics card for...
Trying to find a Positioner for a rotary actuator (Keystone 79u) that works off of Profibus DP Communication.
Determining fail safe position in Pressure regulating valves
New Replies:
Dear Ronald,
Thank you very much for your perfect reply. It is very useful for me.
Best...
Dear Saeid,
The function of a downstream pressure regulator is to maintain the downstream...
Dear Ronald,
Thank you very much for your reply, but I had a different supposition about self...
I would like to know the operation of positioner.
New Replies:
By M. Hopkins on 30 October, 2009 - 8:16 am -
The problem I have is in understanding what I call, the resolution of the unit. How much of a...
Harold,
Thanks a lot for pointing it out. I used the term %opening because it is frequently used...
By NIK on 28 October, 2009 - 2:51 am -
This is excellent reply.
Regards
NIK
...
What George said earlier is true. The positioner is in fact working in a cascade (inner) loop while...
Ronald,
Your reply is excellent, but I suggest one slight change in wording. I think you should...
hi hemanth,
i am also a fresher now joined in a power plant. your questions help me to...
By nik on 27 October, 2009 - 12:15 am -
Deepak
since you are from the CV industry some more questions for U.
What is the effect of...
By Mik on 26 October, 2009 - 3:35 pm -
Hello,
now, I am confused. One reply stated that positioner is a P-controller only, while other...
There is nothing wrong in asking a basic question if you that, you do not know much about it. Since...
Any demo-software available?
need thermistor for -40C to 20C range
New Replies:
By John on 29 October, 2009 - 5:14 pm -
We are satisfied using a 2252 thermistor. We use ours in a standard control range between -50C and...
Mass flow equation and density calc equation for PLC config
New Replies:
if You have the volumetric flow rate multiply it by the density and You will get the mass flow...
reverse power relay operation
New Replies:
Dear all
Sorry to interrupt you but I really need a help here. At My MOPU project, there is...
How can HC900 communicate with ML50?
New Replies:
By Art O on 28 October, 2009 - 1:09 pm -
Hi Keith,
HC900 does support Modbus/TCP so the suggestion from Patrick L to use a Modbus/TCP to...
Industry implementation for presentation.
New Replies:
Jay,
What kind of info are you looking for exactly?...
Jay,
I think we can help you.
Send an email to info [at] indusoft.com, mention my name, that...
Spurious GCV LVDT readings on opening panel door
Can anybody told me how to tune Baldor Linear motor .
New Replies:
OK, but I need more details of your application:
- Microflex operation mode (i.e. current or...
By Edwin on 27 October, 2009 - 12:40 am -
Linear encoder: -ATEK MLS1 series linear encoder with hall sensor.
Presently I am able to...
looking for vibration monitor
New Replies:
Thanks Dileep,
I am looking into it for a suitable monitor for my application. Ill post on what...
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