from the Controls department...Why Minimum Value Gate Used in GT controls?
I have seen this Minimum value gate for controlling GT's and Booster Compressor in couple of CCPP.
fluidflow, Pretty good description; but I would be surprised if FSR actually goes to 33% during...
Dear CSA, thank you for showing interest in my question. major events up to FSNL in my opinion...
from the Instrumentation department...analog 4-20mA output transmision
Analyzers analog output signal 4-20mA transmission
By aj on 22 July, 2014 - 6:52 am -
Is it safe to run analog and digital instrument signals in the same mulicore cable? multicore is...
from the CBM department...lube oil level
Which Lube oil tnk level to be used: Absolute or relative
By Sam on 21 July, 2014 - 6:50 am -
Something to take into consideration is that the pressure at the bottom of a column of liquid will...
By syed on 18 July, 2014 - 7:10 am -
Sam, thanks for your reply. You have given an excellent point that i cannot really find in any...
By Sam on 15 July, 2014 - 8:50 am -
In most cases there is a reason for measuring the level of a product in a vessel and that is to...
from the Forum department...Operation of Shutdown and Blowdown Valves
Can anyone explain the shutdown valve (SDV) & Blowdown valve (BDV) operation?
from the Forum department...Single Controller for a Flow and Pressure Control Valve
Single controller for multiple purposes
By Sam on 14 July, 2014 - 9:00 am -
Sound a lot like a split range control that you need to do in this application. In a split range...
By otised on 13 July, 2014 - 3:30 pm -
I am assuming that the final output of the flow controller is a position command to a control...
By d on 13 July, 2014 - 10:34 am -
of course simulteous control is not possible, but to talk about valves in a specific...
from the INSTRUMENT department...Reading Hot Thermocouple
Does a hot thermocouple in junction box give an actual reading?
good answer >> if the connections are made properly and proper thermocouple extension...
By Curt Wuollet on 8 July, 2014 - 12:19 am -
If the junctions are similar metals, say thermocouple wire and the proper extension wire, yes it...
By otised on 7 July, 2014 - 10:50 pm -
Just a clarification on the condition of both thermocouple leads having cold junctions. The cold...
By d on 7 July, 2014 - 9:50 pm -
excellent description of the problem faced and how to get proper readings...
> if the connections are made properly and proper thermocouple extension wiring > and...
By d on 7 July, 2014 - 8:49 am -
if the connections are made properly and proper thermocouple extension wiring and terminal blocks...
from the r&d department...Magnetic pickup - amplitude or frequency
Magnetic pickup - amplitude or frequency
Ramana, There is a lot of good and applicable information in the previous posts to this thread....
By Ramana on 9 July, 2014 - 7:46 am -
Dear friend, Please need a help about magnetic pickup unit sensor. Am confused about the sensor...
from the Forum department...GE Mark VI/VIe HMI and Software Questions
Specific questions about Mark VI and VIe.
Kevin, Welcome to the world of Speedtronic turbine control systems in the age of Mark VI and...
from the OSI vs. Aspen department...OSI Pi versus Aspen Info Plus 21
Chemical company with batch processes has to decide if they buy Aspen tech or OSI.
By Praveena on 9 July, 2014 - 6:46 am -
I'm working on OSISoft PI Historian for couple of years, So I would like to share my exp on this. ...
from the Instrumentation department...DP to Flow conversion
can we directly configure square rooted DP (4 - 20mA) from DP transmitter to flow
> And the max range of orifice is 120 m3/hr if my DP is 20mA then is my flow equals to...
By kams on 8 July, 2014 - 5:58 am -
As your statement whatever DP displays is Flow?...
By kams on 8 July, 2014 - 5:44 am -
Am sorry you are right, its not 0-10 bar ,its 0-98.3 mbar. and i have set transfer function as...
By Roy Matson on 5 July, 2014 - 6:06 pm -
Just be careful and make sure you are not also doing the square root function in the control...
By I Muchimwe on 5 July, 2014 - 5:05 am -
As David correctly informed, you can do the conversion from linear output to square root output in...
Every 3051 has a parameter to convert the output of configured DP range from a linear DP output to...
from the Automation List department...barg and bara
I want to know the difference between barg and bara.
By saiful islam on 6 July, 2014 - 2:17 am -
so is 1 barg = 1 bar?...
from the OPC connectivity with CS3000 department...Reading or writing Text (string) from OPC in CS3000
Is it possible to Read 'Text/string' data from OPC into Yokogawa CS3000 system?
from the Machine Building department...Liability?
Am I personally liable if I build a machine without safety features to prevent an operator from getting hurt?
By d on 4 July, 2014 - 7:05 am -
At issue is "re-building" a machine, not a matter of designing it. A craftsman involved...
By d on 4 July, 2014 - 5:29 am -
Repairs in kind are exempted from individual liablity as long as you did the work properly, i.e. as...
By firstname.lastname@example.org on 3 July, 2014 - 11:19 pm -
Repairing a machine to factory specs sometimes releases one from legal ramifications. I however...
> So you are saying that I as a salaried employee is not at fault, and that the liability falls...
By Clay Robbins on 3 July, 2014 - 4:37 pm -
So you are saying that I as a salaried employee is not at fault, and that the liability falls back...
By d on 3 July, 2014 - 1:16 pm -
repair is usually covered, beyond that when you start making major changes or improvements that is...
from the ELECTRICAL department...ABB acs800M
we are using acs800M drives we are loosing the capacitor banks regularly in the filter unit in the convertor side. what could be the reason for these regular blast outs of capacitors and how can we control it .
By CDR on 3 July, 2014 - 5:48 pm -
The ACS800M is only a controller. Can you provide the part# info for the drive and the filter?...
from the Forum department...master controller MPC 3000
Having problems looking for schematics for a MPC3000 microprocessor based master controller ..i hope someone could help me out..
from the Allen Bradly, Logix 5000 department..."Cushion arm" moves to soon, intermittently. Cause unknown and damaging product.
I have a receiving cushion that intermittently enters its down motion too early causing damage to the product. It is so intermittent that it's impossible to nail down the cause.
from the Engineering department...Alstom Microrec DCS
Looking for background information on Alstom Microrec DCS used for controlling CCGT power plant.
By ali on 28 June, 2014 - 12:52 am -
Hi I am looking for spare parts for MICROREC K4.1. I need a ESVI1 and a AMS42, urgent can you...
from the electrical equipments department...Standards that have to be maintained by a microcontroller based control unit
Standards that have to be maintained by a microcontroller based control unit for electrical equipmets and products
from the Forum department...Modeling system with P controller a 4-20mA valve
Modeling system with P controller a 4-20mA valve
from the Forum department...local workstation for gas turbine
difference between ALLEN BRADLEY workstation cat no. 6160-PCD466A, and ALLEN BRADLEY workstation cat no. 6160-PCD2B
from the Forum department...IGV TEST
khairi, Specifically: What is the problem you are having with the IGVs on your MS5001 GE-design...
from the Slurry Density Measurement department...Slurry Density Measurement
Are there reliable alternatives available to measuring slurry density except for the Gamma radiation method?
By Marius de Vries on 26 June, 2014 - 4:33 am -
Yes, there is now! We are manufacturer of ceramic ultrasonic sonochemistry analyzers for slurry...
Fairy Tale, n.:
A horror story to prepare children for the newspapers.