from the Help department...Formulas
Searching for information to work out formulas
from the Instrument &Control department...Control Valve Positioner Action & Travel Scale
Control Valve FF positioner (Masoneilan FVP-110) Action (Direct/Reverse) and travel scale range.
> What are the settings in parameter ACT_FAIL_ACTION for the ATO and ATC positioners? ...
By Jim Delaney on 5 December, 2013 - 10:09 am -
What are the settings in parameter ACT_FAIL_ACTION for the ATO and ATC positioners?...
from the Automation List department...Control Valve Choking
i have some confusion about control valve choking phenomena...
By bpchemicalengr on 6 December, 2013 - 1:57 pm -
How does the flow not decrease if dP decreases? Isn't dP the only driving force for flow through...
from the Instrumentation department...Serial link reliability
Can I use serial communication between DCS and ESD to take close valves or should i use hard wired communication. This loop has no SIL and isn't essential for compressor shutdown
from the control & Instrumentation department...Opening Vacuum Breaker during Turbine Trip
Can anybody explain me why we open condenser vacuum breaker in case of turbine trip?
By P. M. Mielgo on 4 December, 2013 - 7:30 am -
> there are certain cases when we need to open vacuum breaker of condenser, like turbine trip on...
from the AUTOMATION department...Best practice for flow measurement
For certain flow measurement what would be the best practice
By Jiro on 3 December, 2013 - 7:05 pm -
> I have a question. like for certain flow measurement what would be the best > practice?...
By Jack on 28 October, 2013 - 5:41 pm -
They can actually be installed up or downstream from a valve, bend, union etc. The key is that the...
from the Process Control department...Watlow F4 not being detected
Watlow F4D will communicate with one computer but is not detected on another.
> Our main control program is fixed on COM1 Can you set the PCIe card to COM1, or does COM1...
> There's no option with the card to turn off the flow control, Isn't flow control done in...
Thanks for the suggestions. I've done a loopback test and the card passes. It also does require...
> When we needed to add a DAQ card, we got a new computer with that capability, > but it...
By Curt Wuollet on 29 November, 2013 - 3:30 pm -
P.S. You might try disabling the builtin ports so the card gets assigned to COM1 or COM2. ...
By Curt Wuollet on 29 November, 2013 - 3:25 pm -
Check out what port it is being assigned to. a lot of software isn't flexible about them. Windows...
from the electrical engineer department...jet pulse filter
application of bag filter with jet pulse filter system
from the Forum department...Ex e certified enclosure with an intrinsically safe circuit
Exe or Ex ia enclosures. Both the certifications are unclear.
from the Automation List department...boiler drum level calibration with DPT
How to calibrate DPT for boiler drum level control? How to decide range of DPT?
By David Todd on 25 November, 2013 - 9:48 am -
Your calibration in the shop corresponds to 610 mmWg at ambient temperature where the density of...
By Rishi on 20 November, 2013 - 9:33 am -
How to calibrate DPT for boiler drum level control? How to decide range of DPT? We mount a level...
from the instrumentation department...implementation of yokogawa backup LAS
procedure on how to implement yokogawa devices as Backup LAS
By Jonas Berge on 23 November, 2013 - 8:56 am -
Link Master (backup LAS) functionality in field device is disabled by default. Make sure it is...
from the CALIBRATION department...Rosmount PROFIBUS PA Calibration
data doesn't save in transmitter after powering off and powering it on again
By Jonas Berge on 23 November, 2013 - 8:28 am -
Were you able to solve this? If not, send me an email at Jonas dot berge at emerson dot com ...
from the Forum department...PID Controller philosophy for Distributed controlled systems
Standards defining controller status (auto/manual) in DCS in case of failure of input
from the Process Control for Dummies 101 department...Honeywell PKS OPC Connectivity
Trying to connect Honeywell control valves to OPC
from the Forum department...Passing an analog value from PLC to DCS
Transferring an analog value from a 1769-OF8C AO to a Series C (C300) Honeywell Experion AI IOMA.
from the Intrument department...Orifice flow
Spray water flow transmitter shows reading after spray control valve opening above 60%. Below 60% valve opening, flow in Tx shown zero.
from the Installation and Commissioning department...Frame 9E Lube Oil Tank
Frame 9E Lube oil Tank low level
Dear CSA thanks for ur reply. I have checked P&ID and there is no dimension for LO tank. I...
nayan.sharif, Is it not possible to physically measure the distance from the bottom of the L.O....
please read 860 mm instead of 800 mm......
In my plant we are also installing GT frame 9e..LO P&ID shows three level i.e. HIGH, NORMAL and...
from the Forum department...SRV not a zero with 0% command
SRV valve moves away from zero position when I enable manual function in Mark V valve calibration application.
By Be_anon on 13 November, 2013 - 8:40 pm -
Does your control does calibration procedure include a null bias check? If so, have you adjusted...
Jeff Ladwig, Either the LVDT calibration is not correct, OR the servo null bias is not correct,...
By Jeff Ladwig on 13 November, 2013 - 3:22 pm -
Yes, explanation is helpful. I am still wondering why when the SRV command setpoint changes from...
from the Forum department...Shallow Wastewater Flow Measurement
Flow measurement below 1 inch
By Robert Scott on 12 November, 2013 - 9:54 am -
If you are asking for accuracy when the depth is only 1 cm. and a range that includes when the pipe...
By d- on 12 November, 2013 - 9:13 am -
it is some times possible to use an internal weir, but only in vented rather large piping, and as...
from the Thermal and Electro-Thermal Shutoff department...Looking for feedback on Thermal Safety Shutoff
Looking for feedback from someone who has had experience with thermal safety shutoffs.
from the RC500 IO Software department...Honeywell RC500 IO
I am trying to download to a Honeywell RC500 IO module using signet IO tool.
from the Instrumentation department...can pressure switch known as feedback switch?
Can Pressure Switch known as Feedback switch?
By Sam on 8 November, 2013 - 1:33 am -
What we sometimes do on pumps with diaphragm seals is to install a pressure switch behind the...
from the Instrumentation department...hot well Level measurement
Which type of transmitter is suitable for hotwell water level measurement?
By jagdish kathel on 5 November, 2013 - 3:15 am -
The range of transmitter is depend on mounting height of transmitter? in which level water filled...
from the Electrical Engineering department...120 MW Thyripol excitation system
Configuring of T-400 Module for SIEMENS Excitation system.
By Gaurav on 5 November, 2013 - 12:53 am -
You may please forward your Thyripol requirement to firstname.lastname@example.org...
from the Control department...Comparision betwen PCS7 & Yokogawa CS3000
I want to compare CS3000 or CENTUM VP to Siemns PCS7 for refinery plant
from the Forum department...Natural gas and super compressibility factor
Super compressibility factor in Natural gas measurement
By d- on 31 October, 2013 - 12:19 pm -
you have to read the literature you are referencing very carefully Supercompressibility refers...
from the SIS department...New to SIS Practices
Looking to bring industry leading practices into small town Pennsylvania refinery. (Smalltown PSM Guy)
from the DCS department...FCS Not downloading properly
Graphics show as Asterisks after downloading new project
By Enzo on 29 October, 2013 - 6:22 pm -
If your value (PV) is greater than the amount of spaces you allocated for the tag, the DCS will...
from the I&C department...Mark-V voter mismatch and Diagnostic Alarm
Mark-V voter mismatch Alarms are persisting 12sec.
Dear syed_hassan08, What have you done to troubleshoot the problem, and what were the results of...
By syed_hassan08 on 29 October, 2013 - 3:31 am -
Dear CSA Alarm starts from the top of the list....
from the Instrumentation department...Turbine speed output from Bently Nevada
Turbine speed output from bently nevada is fluctuating
Looking at your query and Woodward Tachometer along with Yokogawa DCS it suggest me that you may be...
If you actually look like your passport photo, you aren't well
enough to travel.
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