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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?
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How to edit or view the Namur settings
I would like to know the operation of positioner.
New Replies:
Yes, you are right. The positioner in fact has an integral gain component. However, there is an...
By George Buckbee on 26 October, 2009 - 9:37 am -
Most positioners are P-only controllers, usually with a fairly large gain. This provides enough...
By NIK on 26 October, 2009 - 6:44 am -
Is it a proportional controller or a PI controller. Somewhere I read that it is a P only...
Dear All,
I work in the Fisher control valves division of Emerson.
I would like to explain...
I need ideas for my project on Automated Control of Manufacturing Systems
Determining fail safe position in Pressure regulating valves
New Replies:
Sorry, typo in my post above.
Should read as :
Upstream pressure regulators (Back-pressure or...
Hello Saeid,
First of all, I have to say that the term "Fail-safe" is not fully...
None
New Replies:
Thank You all for fast response and answers. I think that the servo gauge is the best solution for...
By NIK on 26 October, 2009 - 6:21 am -
I have seen intelligent tank gauging systems supplied with TOYO engineered Ammonia storage tanks...
By Bud on 25 October, 2009 - 3:30 pm -
See the discussion of this topic here:
http://www.control.com/thread/1026207033
...
I know for the Ultra Sonic level transmitters if you going to mount on top with a 3" diameter...
Spurious GCV LVDT readings on opening panel door
New Replies:
For future reference the fault has been found and was on the Analog input/output module board...
Can anybody told me how to tune Baldor Linear motor .
New Replies:
What type of linear encoder with Hall sensor do you have? Can Microflex drive perform brushless...
establish the HART communication with Berthold multi detector HART output loop.
New Replies:
By Thangs on 26 October, 2009 - 12:50 am -
Hi David
Thanks for reply.
in our application, we have two radioactive sources &...
By David on 25 October, 2009 - 2:48 pm -
From HART's application guide, page 8:
http://www.hartcomm.org/hcf/documents/appguide.pdf
...
Frequent problem of erratic & fluctuation readings of E+H FMR245 level TX
New Replies:
By anynomous on 26 October, 2009 - 12:17 am -
Do you have agitator in tank ?
RPM ?
CLEARANCE FROM THE WALL?...
By wboyes on 25 October, 2009 - 4:39 pm -
Sounds like the transmitter is working okay, but is getting covered in something that you have to...
By Carl Ellis on 25 October, 2009 - 3:20 pm -
I don't know about that specific E&H model, but radar technology in general has a problem with...
What is the advantage of using duplex type RTDs in HV Motor protection
New Replies:
By Phil Corso on 25 October, 2009 - 8:28 pm -
Kunal... typically, RTD's used to monitor motor temperature are embedded in the winding slot. Thus,...
By Carl on 25 October, 2009 - 3:10 pm -
Without knowing the application of High Voltage motor protection, let me state some basics of...
guideline to install Matrikon Analytics Excel Reporter
New Replies:
By Mustafa Al-mosawi on 25 October, 2009 - 4:03 pm -
Hi MAZ,
The manual is available for free to download directly of the Matrikon Analytics website...
Ultrasonic sensor from SICK, problem, with connection
New Replies:
So I successfully connected my ultrasonic sensor. I email SICK and they told me that NC means no...
Change of range for pressure indicators
using anti-surge line for turn-down
Standards for Safety PLC in Steam Boilers
New Replies:
First we need to know which country so we know the appropriate standard.
Interesting question...
Recieved a float type level gauge having calibration range 0 - 1670 mm but vendor has considerd 30.6 mm as level offset.is it ok?
How can HC900 communicate with ML50?
New Replies:
By David on 24 October, 2009 - 8:31 am -
Sorry, I can't help on facts about ML-50. Whatever the ML-50 is, I've never seen or heard of it...
Hello,
As already stated the hc 900 will act as a master and/or slave on all ports, also the...
Hi David;
Thank you for your valuable information. Do you have the model of the ML50 Ethernet...
By David on 20 October, 2009 - 10:20 pm -
Presumably, the ABB drives are Modbus RTU slaves. On that assumption, the HC-900 is a Modbus RTU...
coriolis type flowmeter . the calibration range is 0-1000GPM (0-2240kg/min) but vendor done up to 2268 kg/min. is it acceptable
New Replies:
Actually the meters are calibrated to know the K-Factor/flow co-efficient over the flow range....
Question about connection between two control units
New Replies:
Roy, that was my question, too.
Regarding the protocol used by the DCS, 'Ethernet' just isn't...
By curt wuollet on 23 October, 2009 - 3:03 pm -
I think "headache free" is a rather extreme overstatement. It binds you hand and foot to...
By Roy Matson on 23 October, 2009 - 12:55 pm -
Pham,
You do have a problem. In my experience most DCS systems have a Modbus communication...
By Wassim Daoud on 23 October, 2009 - 11:37 am -
This is a common challenge in automation world. The more often chosen solution recommended for it...
we are planning to overhaul a present GE-MS5002D type turbine , but we don not have the overhaul up dated manual to go through
New Replies:
By Dennis on 23 October, 2009 - 2:47 pm -
the link you have provided has expired, could you kindly repost.
>Check this one.
>
...
I am struggling with the solution to this transfer function, school is 30 years hence.
For a project we have to restore the process loads after power failure. How can i do this
New Replies:
By ananymous on 22 October, 2009 - 12:33 am -
I did a project with a PLC having retentive memory. The PLC was controlling a batch process.The...
Can any one suggest the most suitable instrument for Flow measurement under Gravity flow conditions. The service is Produced Water after Crude Oil Separator.
New Replies:
If the water is pretty clean, I would use a Badger turbine meter. They work well and are not very...
Could someone explain whether variable speed with a single-shaft gas turbine is permitted while the generator is producing power?
New Replies:
The only difference between a motor and a generator is whether the device is producing torque from...
Please let me know briefly about the Temperature sensors and their assemblies, in process control
New Replies:
By David on 20 October, 2009 - 10:23 pm -
Please refer to pages 155 to 167 of the class textbook for answers....
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