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Control.com member...
Member Information and Posts by jmw
User Picture
Company: Razaghi meyer International
Topic: Sensor technologies.
from the Forum department...
Turbine flowmeter error
Originally posted by Petre Popescu on 22 April, 2013 - 2:42 am
Turbine flowmeter reading much more than should be
New Replies:
> The turbine meters that I'm familiar with are mechanical turbines, but > electronic...
Topic: Sensor technologies.
from the Density Measurement department...
Coriolis density measurement
Originally posted by Kirill St. on 3 July, 2012 - 8:53 am
Student project in coriolis density measurement.
New Replies:
The frequency of operation of a coriolis flowmeter depends on the density of the fluid it contains....
Temperature effects: firstly, it affects the Young's modulus which causes a frequency shift. This...
PS: Not all resonant frequency devices can measure density. This is particularly apparent with...
You can get a good understanding of the resonant frequency method for density here ...
Originally posted by khan on 7 December, 2012 - 2:00 am
why gas metering package is in necessary while we can use only flow meter to measure quantity.
New Replies:
> why gas metering package is in necessary while we can use only flow > meter to measure...
Topic: Continuous process industries, DCS questions.
from the Forum department...
brix measurement for cane juice
Originally posted by nelson mukarakate on 6 December, 2012 - 1:40 am
how do you measure brix?
New Replies:
Refractometer is one way, if sampling and measuring off-line so you can clean it afterwards. ...
Topic: Application Questions and Problems
from the Forum department...
density and process measurement
Originally posted by aki_lala on 27 November, 2012 - 1:12 am
Does density affect process measurement? How?
New Replies:
> I am trying to do a final year project on density measurement equipment. But then, i was...
Topic: Sensor technologies.
from the flow control department...
flow splitter for coriolis flow meter
Originally posted by Kirill St. on 26 November, 2012 - 4:34 am
Why do some companies use the double tube concept in the coriolis meter construction and almost no company that produce single tube coriolis flow meter?
New Replies:
In the beginning there was the MicroMotion single "U" shaped tube. This vibrated at...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Density meters
Originally posted by Rumple Stiltskin on 5 November, 2012 - 11:27 pm
Description of density meters required for the measurement of process fluid density.
New Replies:
PS I forgot to mention the Gravitrol. Originally manufactured by Hallikainen, the Gravitrol is a...
I'll take a shot at the vibrating element sensors which are amongst the most accurate density...
Topic: Continuous process industries, DCS questions.
from the Applications department...
Non-Nuclear Density Meter For Slurry
Originally posted by Austin Bell on 24 April, 2012 - 2:27 pm
Does anybody know of a non-nuclear continuous in- line density meter for slurry?
New Replies:
Hi Rosie, thanks for the update and explanation....
If one were to use a tuning fork I would rather go with the 7828 long stem from Emerson. This is...
Interesting - and frustrating. Interesting in that if it does what is claimed, it seems a...
Topic: Continuous process industries, DCS questions.
from the instrumentation department...
Measuring density of slurry
Originally posted by Anoop on 27 August, 2012 - 9:40 pm
i would like to know suitable method to measure density of slurry other than nucleonic gauge
New Replies:
Can I suggest you do a search of this website. This question has been asked several times...
Originally posted by joshuamhora on 14 June, 2012 - 6:31 pm
Dual measurement of Density and Flow of Acidic Slurry.
New Replies:
While it is always desirable to approach the manufacturer to obtain help resolving issues, it would...
Increasing back pressure might help if you have some bubbles or cavitation. The amount of air you...
I perhaps didn't focus on the error message you reported. Almost certainly, re-reading your...
You are using a coriolis mass flow meter to determine both density and volume. Mass flow and...
Topic: Engineering and workplace issues.
from the Flow rate Measurements department...
"Big" Coriolis flow meter
Originally posted by Kirill St. on 9 July, 2012 - 6:26 am
Why I cant find large Coriolis flow meter?
New Replies:
Firstly you need to know if the various properties scale up as well. Do you want them to? Do you...
Big meters cost a lot to develop and require a company with the resources to identify and capture...
Topic: Continuous process industries, DCS questions.
from the Production department...
Normal m3 or Standard m3
Originally posted by Shahid on 26 June, 2012 - 2:59 am
Flow meter calculation
New Replies:
It can be anything. You will have to go to the original specification to see what was asked and...
Topic: Information resources, documentation.
from the Process control/Instrumentation department...
Selection of Instruments in petrochemical industry
Originally posted by Andy on 23 June, 2012 - 5:27 am
How selection/type of instrument takes place during engineering?
New Replies:
I simply mean that few engineers can now devote the time, officially, to acquiring the skills to...
Once upon a time, when end users had plenty of engineers and though there were multi-national...
Topic: Continuous process industries, DCS questions.
from the Slurry Density Measurement department...
Slurry Density Measurement
Originally posted by Peter Green on 30 January, 2007 - 11:59 pm
Are there reliable alternatives available to measuring slurry density except for the Gamma radiation method?
New Replies:
Is there any link with the earlier post by Enrique Rengel? He talks about an inline weighing...
All due respect to Walt but the answer to any density problem isn't always coriolis meters. ...
Topic: Engineering and workplace issues.
from the No Power Source At the Tank department...
Wanted: Simple and Inexpensive Automated Pump Control System Solution
Originally posted by M Jensen on 4 January, 2012 - 9:10 pm
Looking for a simple and inexpensive pump control system to automatically fill water tank. No power source at the tank. Pump is 700 meters from tank.
New Replies:
I note one comment about finding fittings or this tank and another about pump start stop cycling. ...
Topic: Sensor technologies.
from the Measurement department...
Solartron 7835 troubleshooting
Originally posted by pipelinetech83 on 29 May, 2012 - 10:48 am
Densitometer working fine for all products except diesel fuel. Looking for ideas on where to trouble shoot.
New Replies:
I am assuming this is the receiving end of a multi-product pipeline. Clearly, what you are seeing...
Topic: Engineering and workplace issues.
from the Orifice department...
Orifice Plate Dimensions
Originally posted by Konstantinos on 16 November, 2011 - 8:55 am
Orifice Plate Dimensions for specific flow rate.
New Replies:
I suppose you could consult ISO 5167. If you can google, google "Free Orifice Plate Sizing...
Topic: Sensor technologies.
from the Density Measurement department...
Coriolis Density Measurement
Originally posted by Leonard Lewko on 23 March, 2011 - 11:37 am
Is there a velocity limit for Coriolis meters to measure density?
New Replies:
I need to eat some humble pie here. I have just come across an old manual for the 7860 2"...
The simple answer is that there ought not to be a direct effect of flow on the density...
Topic: Sensor technologies.
from the Instrumentation department...
Interface Level Measurement
Originally posted by sanjib on 5 December, 2008 - 4:12 am
How can we measure Interface level measurement?
New Replies:
> It is methanol and water. Another way to do this is to install a tube density meter...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Process gas flow measurements
Originally posted by Qasem on 16 February, 2011 - 4:27 am
Vortex flow meter for gas measurements
New Replies:
Most gas flow meters can measure at process conditions and then in a flow computer have the results...
Topic: Continuous process industries, DCS questions.
from the Underwater department...
Density and Viscosity
Originally posted by Kevin on 20 January, 2011 - 10:58 am
Measuring Density And Viscosity
New Replies:
Here is an article from 1999 on PMMA polymerisation reaction end point spotting: ...
Viscosity probably has more "oddball" units (pardon the pun) than any other measurement...
Modern viscometers are very capable sensors. For example, tuning fork sensors have success in...
I don't know the automotive sensor but I'd be suspicious of the Fuji sensor, that is, I think its...
Topic: Engineering and workplace issues.
from the Safety instrumentation department...
Two ESD causes from single transmitter
Originally posted by Amin on 26 December, 2010 - 5:58 am
Low/low and High/high level alarms to activate two separate SIFs. can i use a single transmitter for both?
New Replies:
It appears there are two possible actions that can be taken; to shutdown or energize the inlet...
Topic: Sensor technologies.
from the I&C department...
Sensor and Transducer
Originally posted by Ahmed on 25 November, 2010 - 12:49 am
definitions for sensor & transducer
New Replies:
Well, that's life. There are going to be different customary usages in different industries and...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Gravity flow measurement for paint
Originally posted by Joel Rousseau on 10 June, 2010 - 9:27 am
Need to evaluate the amount of solvented paint deposited on a strip by measuring accurately the inflow and the outflow (gravity flow) going to and from the coating head...
New Replies:
Coriolis might be a good bet if you can get the flow you need - head loss may be an issue for...
Topic: Information resources, documentation.
from the Instrumentation department...
Sarasota Density analyser maintenance manual
Originally posted by Sachin on 12 June, 2010 - 10:47 am
Require sarasota HC900 density analyzer maintenance manual
New Replies:
Some 60secs internet searching brings this link: ...
Topic: Sensor technologies.
from the Chemical department...
Density Measurment
Originally posted by Engineer on 10 March, 2010 - 8:02 pm
How can I reliably measure sodium hydroxide (50%) density online.
New Replies:
"In our process we are diluting raw caustic from 48% to 23%." then this is exactly the...
Topic: Engineering and workplace issues.
from the Field Instrumentation department...
Selection of Flow Meter
Originally posted by sanjib on 25 January, 2010 - 5:27 am
What is the basic criteria for selection of Flow meter?
New Replies:
It might help if you advise some process details. Fluid type, density viscosity, is it clean and...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Square root, temp compensation
Originally posted by rizwan on 29 December, 2009 - 1:44 am
flow calculation to extract square root from Dp of a orifice plate installed on natural gas pipeline
New Replies:
Some good information can be found in this manual here: ...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Density meter on fuel gas line
Originally posted by ARFP on 19 January, 2010 - 4:21 am
Purpose of utilization of density meter on fired heater fuel gas line.
New Replies:
There is often a good reason to use density and not temperature and pressure which relates to the...
Topic: Continuous process industries, DCS questions.
from the Automation List department...
Plugged Up Coriolis Flow Meter
Originally posted by FT on 9 November, 2009 - 10:40 pm
Coriolis Flow Meter plugs up after few minutes of operation.
New Replies:
What type of coriolis meter do you have? For some high viscosity fluids/slurries conventional...
Topic: Sensor technologies.
from the Forum department...
How to calculate flow linearization?
Originally posted by Zamunga on 26 September, 2009 - 2:46 pm
How to implement the linearization algorithm in order to support proper flow metering?
New Replies:
What is the flowmeter? What accuracy is required? ...
Topic: Sensor technologies.
from the Flow Measurement department...
Gravity Flow Measurement
Originally posted by Sanjeev on 10 October, 2009 - 6:12 am
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:
Cost will vary significantly from one type of meter to another. You say this isn't very critical...
Topic: Engineering and workplace issues.
from the Instrumentation department...
Confusion in defining calibration range
Originally posted by Gopi on 13 October, 2009 - 12:48 am
Confusion in defining calibration range
New Replies:
Not all instruments require calibration... PRTs don't need it unless you are being extra fussy...
Topic: Continuous process industries, DCS questions.
from the Field Instruments department...
Vortex Flowmeter Calibration for Gases
Originally posted by Hamid on 15 August, 2009 - 6:18 am
How to calibrate Gas Vortex flow meters, with Gas or liquid?
New Replies:
Vortex shedding is a function of the viscosity at the edge...
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