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The threads that wouldn't die...
- PC reliability?
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- 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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differential expansion reading going to negative limit after 1hr of rolling.
New Replies:
By Phil Corso on 21 May, 2009 - 7:11 am -
tmr, what was the electrical disturbance that caused the initial trip?
Regards, Phil Corso...
By Javier Medina Villa on 20 May, 2009 - 8:53 pm -
Check the signal cable shield is only point connected and a proper isolated connector betwen sensor...
which tachometer is best suited for measurement of shaft speed......
Tank weight varies with the time by 250 Kgs.
New Replies:
By Sam on 20 May, 2009 - 2:16 am -
My question was regading the Ac2O tank. What is the indicator capacity and resolution? that is for...
By mick on 19 May, 2009 - 4:14 pm -
Sam .. No it isnt the same tank.
Tank capacity is 20000 litres approx (Two separate Stainless...
By Sam on 18 May, 2009 - 8:51 pm -
Is it the same tank which was earlier installed with compression load cells, with indicator 100m...
> The problem is Tank weight varies with the time ....
My guess is that the tank is not...
By M Griffin on 18 May, 2009 - 12:42 pm -
It might possibly be the same problem as was discussed in the following thread.
...
The servo current didn't achieve properly during weekly test but the valves open and closed OK
New Replies:
Without understanding where the anomaly occurred during the test and the amount of...
About BS&W meters
New Replies:
By John Rosen on 19 May, 2009 - 4:00 am -
Historically, instruments used to measure H20 in oil have been called BS&W units. The newer...
Sense level wirelessly
New Replies:
By Sushant Chanana on 17 May, 2009 - 11:50 pm -
Hi Roy,
Here problem is that line of sight is obstructed with process equipments.
What you...
By Roy Matson on 15 May, 2009 - 10:49 am -
I think wireless is a good choice provided you have a line of sight or without too many...
Problem with Load cell measuring After calibration of a newly installed process tank
New Replies:
By M Griffin on 17 May, 2009 - 10:19 pm -
I think you need to bring the person who designed the tank mounting system back into the picture...
By Curt Wuollet on 17 May, 2009 - 9:02 pm -
It depends on what type of cells you have, benders are more susceptible that hangers. Crushers are...
By Mick on 16 May, 2009 - 5:01 pm -
Thanks for replying
How do we check for strain on The Cells and what can we do to stop it ?
...
By Curt Wuollet on 16 May, 2009 - 2:35 pm -
Check for strain on the load cells caused by expansion of the tank.
Regards
cww...
Regarding Natural Gas Metering
Ex Protection in Hazardous areas
We encountered an erratic reading of our ultrasonic level transmitter.
New Replies:
By wboyes on 14 May, 2009 - 11:59 am -
Yep, that's another good one.
Here's another...light foam with a thickness of 1 cm (or about...
By Issac on 14 May, 2009 - 8:14 am -
Another spring time seasonal ultrasonic anomaly - the air temperature above the water in a closed,...
Could it also be because of improper sampling techniques used? (box car, etc). By the way, what...
By wboyes on 13 May, 2009 - 4:15 pm -
There are lots of things that would cause erratic readings. First, define what you mean by erratic...
By Issac Issachar on 12 May, 2009 - 10:23 pm -
Reasons for jittery/noisy readings:
1) jitter is real:
surface turbulence due to
-...
By wolfman1800 on 12 May, 2009 - 5:14 pm -
john,
you can get erratic readings at very short distances, around the 1 inch or less from the...
Problem backing up configuation data from instruments.
New Replies:
By Pedro on 13 May, 2009 - 10:21 am -
You can't. You can store some configurations on the 275 itself if a data pack or the 275(interface...
RTD sensor tip and inner surface wall thermowell distance requirement
New Replies:
Hi PC,
The length btw the sensor tip and the wall should be as minimum as possible, and...
Weighing scale design. Load cells are parallely connected adc count variation
New Replies:
By Sam on 11 May, 2009 - 4:37 pm -
Hi,
When you placed the 2kg weight on load cell1, is the entire 2kg weight is sensed by...
What are the best corrosion monitoring solutions available?
New Replies:
By Chris Jennings on 11 May, 2009 - 3:13 am -
I've used this system with other vendors DCS, mainly ABB, but the equipment is compatible with any...
http://hpsweb.honeywell.com/Cultures/en-US/Products/Instrumentation/co rrosion/default.htm
...
Does level monitoring for underground diesel storage tanks require ATEX certification?
New Replies:
By anonymous on 11 May, 2009 - 1:30 am -
In our part of the world, diesel (HSD - high speed diesel, used as vehicle fuel) requires...
By Phil Corso on 9 May, 2009 - 10:17 pm -
What does your local gas/diesel supply station use?
Regards, Phil Corso...
By wboyes on 9 May, 2009 - 9:57 pm -
I understood the application. It is a fairly common one. There are plenty of ATEX certified...
Actually I think it is not understood. I said underground tanks but it is not underground like in a...
By wboyes on 8 May, 2009 - 6:22 pm -
If you or your company, or your region of the world requires ATEX (explosion proof or intrinsically...
from the control and instrumentation design department...
Determining the number and location of fire and gas detectorsDetermining the number and location of fire and gas detectors
Best way to communicate with a WAGO device from Matlab? (Considering OPC server vs. TCP connection + .dll)
New Replies:
By M Griffin on 8 May, 2009 - 5:08 pm -
There's jmodbus, and there is jamod. I think the latter is more popular.
...
Hi - sorry about all the typos... wrote that on my phone with norwegian spell checker.
I am...
By Tallak tveide on 8 May, 2009 - 1:07 am -
Hi. I would also think about performance requirements before using matlab for sampling.
The...
By M Griffin on 7 May, 2009 - 1:09 pm -
I can't help you with Matlab, but if you want an alternate approach to the problem you might...
Trying to determine application for NPN vs. PNP. Also NO vs NC.
New Replies:
By Anonymous on 8 May, 2009 - 12:23 pm -
Hi,
It's not really possible to determine if you need PNP/NPN based on the information you give...
Thanks to all, very helpful....
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