Foundation Fieldbus Instrument Simulation
how we can simulate any ff transmitter with a field communicator (0 - 100%) without injecting process variable?
Calculating Pressure Transmitter Range
How can we test Rangeability of Pressure Transmitter?
By Jonas Berge on 21 November, 2014 - 10:55 am
Terms like turndown and rangeability are explained in the smart transmitter calibration tutorial...
Help with a SCR heating circuit
By John Correa T. on 19 November, 2014 - 1:31 pm
The over current trip occurs always on starting or it is a random fault? Also can you give me the...
By Curt Wuollet on 16 November, 2014 - 1:45 pm
No problem: The general goal is to catch an intermittent problem in as few iterations as...
By condern1 on 16 November, 2014 - 3:29 am
I appreciate your input about the transformer as this is where I think the problem is also, but...
By Curt Wuollet on 14 November, 2014 - 10:04 pm
I think you should examine the heaters to see if a sag might be happening if the load doesn't move...
By John Correa T. on 14 November, 2014 - 9:20 am
Could be a problem with the transformer that feeds the load. Some heather units have parameters to...
Measuring Density And Viscosity
Separate Earth for Intrinsically Safe Instruments
Posted by Hamid Sarukhani on 16 August, 2008 - 12:23 am
Is a Separate Earth for Intrinsically Safe Instruments required?
By Bruce Durdle on 17 November, 2014 - 6:49 pm
Not to my knowledge - but there is no reason why you can't adopt one for your own site standards if...
By Student on 17 November, 2014 - 4:23 pm
Hi Bruce, Is there any separate electrical symbol for Intrinsically Safety Earth? Because PE and...
Blockage in Impulse Lines/ Filling Glycol
What is the best practice when you have blockage in impulse lines for flow transmitter how can clear the blockage? what is the best equipment to fill glycol in level dp cell in both H & L sides?
By d on 30 October, 2014 - 5:31 pm
Hopefully blockage isn't a problem, but to properly fill most d/p systems you need the proper...
By Bruce Thompson on 30 October, 2014 - 9:45 am
First off, the impulse lines should NEVER incur any blockage. So let's address what is causing the...
Calibrating a FMT500-IG Flow Meter
Looking for documentation about calibration an ABB FMT500-IG flow meter.
Can I fire an Estop remotely?
By Gerald Beaudoin on 14 November, 2014 - 1:02 pm
Depending on the process/risk, it may even be prudent to have it certified by an qualified third...
By Steve Myres on 13 November, 2014 - 7:36 pm
"This triggers a severe headache for troubleshooting due to the company's arc flash policy...
Instrument Learning Materials?
New instrument engineer, could use some help!
By Rushi Shroff on 13 November, 2014 - 5:30 am
Comparing PLC/SCADA to LabView?
Repost due to bad timing of the weekend... Is it still possible to define when one is better than the other?
By PLC Programmer on 13 November, 2014 - 3:58 am
LabView to me is a complex and highly advanced approach to controls when compared to PLC's. ...
By Erick Sutanto on 12 November, 2014 - 3:08 pm
If you program LabVIEW with a lot of global variable, I don't think you have adopted their...
NRV Downstream of Control Valve
Purpose of NRV/check valve downstream of Control Valves
By Roy Matson on 8 November, 2014 - 12:49 am
Usually done by process engineers who don't know what the are doing. Seriously check valves are...
VFD Pump Efficiency Logic
Programming pump curves in PLC/DCS for efficient operation.
By Dick Caro on 5 November, 2014 - 4:55 pm
There are problems in your plan. First, most pumps are designed to operate at either one of two...
P&IDs and Process Control Narratives
How are process control ideas shared between different parties within your organization especilly when all parties are not control engineers?
By d on 6 November, 2014 - 8:54 am
Well the modern approach is that taken by Virginal Galactic and leave it up to the programmer.... ...
Maximum uncertainty When the Recommended Straight Run for an Orifice Plate Flow Measurement Is Not Observed?
Is there a published work about expected maximum uncertainty if the recommended straight run for an orifice plate flow measurement is not observed?
By d on 6 November, 2014 - 8:43 am
The ASME flow meter handbook (1971, 6th ed) has such charts, they haven't changed much. You'll need...
By d on 31 October, 2014 - 6:20 am
Once you are under 40D/10D straight runs it all depends on your piping layout, the Reynolds number,...
Flow Measurement Using Load Cells
Measuring the flow coming out of a vessel using only a load cell to control a valve.
By Roy Matson on 6 November, 2014 - 12:56 am
I used that method with good results on a small pilot autoclave. The slurry flow was too low to...
IDEC Communication Error 51478
Son is on a location and is receiving an IDEC communication error 51478. he is where any communication is EXTREMELY limited due to the remoteness.
Distributed Control Systems
For a school assignment I want to buy and configure a DCS.
By PLC Engineer on 2 November, 2014 - 8:46 pm
Better. DCS isn't Just a micro controller. I used to be an Embedded systems design engineer before...
By PEEZHEAD on 1 November, 2014 - 1:54 pm
Hello.... I've been doing this for many years. Since my eyes where at my knees. What I find...
Radar Level Transmitter in Fiber Board Factory
Is radar level transmitter suitable for fiber board factory?
By Sam on 31 October, 2014 - 7:37 am
In my experience there are very few applications that cannot be measured with a radar so definitely...
Generator and Capacitor Bank
Totally stumped by the recent brawl over utility of capacitor bank in power generation.