Posts from...
Today, Saturday, August 23, 2014
Topic: Continuous process industries, DCS questions.
from the Eurotherm 3504 department...
Controller Watch Dog and Output Loop Failure Detection
Originally posted by Mike divine on 22 August, 2014 - 5:32 am
Challenges with achieving the processor watchdog and output loop failure functionality with Eurotherm 3504.
New Replies:
Those are fairly easy to code around with most processors. An external time delay relay that you...
Originally posted by Ashiq on 29 May, 2014 - 5:38 am
re-configure Solatron 7951 flow computer.
New Replies:
> corrected volumetric flow calculation from indicated volumetric flow in solatrom flow computer...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Lime slurry density meter
Originally posted by mechanation on 6 June, 2014 - 11:31 am
We are trying to measure density of our lime slurry which approx 22% solids
New Replies:
Vibrating element density is a good approach for slurries but care to be taken over the % and the...
Topic: PLCs and related questions.
from the instrumentation department...
solartron 7915 flow computer
Originally posted by amir qadri on 25 June, 2014 - 11:02 am
solartron flowcomputer 7915 showing error message bad ram checksum error, but it is working normal, printer is continuous writing, bad checksum error.
New Replies:
Suggest you contact Les Hancock support engineer of Emerson. You can find him on linkedin and he...
Topic: PLCs and related questions.
from the I&C department...
Fuse Monitor Alarm infi-90 DCS
Originally posted by Ashiq on 21 August, 2014 - 2:08 am
Fuse monitor slave alarm of IMDSI02-NTDI01 DCS Infi90
New Replies:
The Net90/Infi-90/Symphony digital input modules do not have embedded fuse monitoring to develop...
Topic: Power generation equipment control.
from the Operation department...
Oil injector in Turbine Oil System
Originally posted by Mani Singh on 22 August, 2014 - 6:53 am
Function of Oil Injector in Turbine Oil System
New Replies:
The shaft driven oil pump requires a positive suction pressure (i.e. it cannot suck oil from the...
Topic: Continuous process industries, DCS questions.
from the Instrumentation and Control department...
Calculating Pressure Transmitter Range
Originally posted by Kamaraj on 21 August, 2014 - 7:42 am
How can we test Rangeability of Pressure Transmitter?
New Replies:
Hello Mr. Ashiq, Thanks for your information.. The transmitter output is 4-20mA only. when...
what is the output of this transmitter? suppose its output is 04-20 mA than zero and span would...
Topic: Engineering and workplace issues.
from the automation department...
Difference Between Full Load and Rated Conditions
Originally posted by winds_977 on 21 August, 2014 - 11:59 am
Confused between the terms full load and rated conditions.
New Replies:
I am sorry for not specifying my question. I am asking regarding the rated and full load condition...
For a pump driven by an electric motor, the rated voltage of the motor is the nominal value of the...
Topic: Power generation equipment control.
from the Mechanical department...
Steam Turbine Gear Box
Originally posted by Rangacharya on 14 August, 2014 - 2:29 am
15 MW Steam turbine gear box has high vibration at 3 to 4 MW load. What is the probable reason for this phenomenon?
New Replies:
I want to know whether your generator is air cooled or gas cooled....
Topic: Power generation equipment control.
from the operations department...
Loss of Cooling Water to Steam Turbine Condenser
Originally posted by sriram sandep on 12 August, 2014 - 7:13 pm
What will happen in special circumstances when there is a loss of Cooling water supply to the condenser
New Replies:
What I understood from the conversation that when the machine trips on cooling water not available...
Topic: The Business of Automation and Control
from the Investors department...
New Flow Measurement Method
Originally posted by Abdolazim Hasseli on 9 April, 2014 - 1:09 am
How to find an investor of instruments.
New Replies:
Dear Mr. Sandlin, I sent you two emails after we talked about NDA, I am waiting to have your...
Thank you JMW > What you do is prepare for a long hard struggle and don't waste your money on...
Topic: Continuous process industries, DCS questions.
from the Forum department...
Westinghouse WDPF System
Originally posted by snitz50 on 31 March, 2009 - 11:42 am
What kind of processor is the Westinghouse WDPF and what is its intended use?
New Replies:
Did you get any information about WDPF systems migration? > I am writing my bachelor thesis...
Originally posted by Bill Futch on 12 August, 2014 - 4:08 pm
Starting motor does not cutout when a normal shutdown is given below 60% speed.
New Replies:
Our units have air cooled generators but we do not have a ratchet assembly for slow roll or break...
So Bill here are my suggestions and thoughts on your issue. Some further clarification would be...
Topic: Engineering and workplace issues.
from the Instrumentation and Control department...
Self Actuated Pressure Control Valve
Originally posted by Anil Bathra on 21 August, 2014 - 8:58 am
What happens when Upstream pressure of Self actuated pressure control valve (downstream) is less than set Pressure?
New Replies:
If the valve is meant for controlling pressure upstream of the valve (pressure sustaining/...
Topic: Sensor technologies.
from the Need to find a sensor department...
Lightning Sensor
Originally posted by Andrew on 19 August, 2014 - 7:18 pm
I'm trying to find a lightning sensor
New Replies:
This is an interesting message thread and somewhat related to one 14-year client that makes (and...
By Lynn August Linse on 21 August, 2014 - 9:39 am -
Actually, the vaisala dot com website was pretty interesting. Although it would be tough to...
dopler radar is the answer....
By Lynn August Linse on 20 August, 2014 - 10:58 am -
I think this also depends on your goal. I'd assume the normal 'lightning' system is some form of...
http://www.vaisala.com/en/products/thunderstormandlightningdetectionsy stems/Pages/TLS200.aspx ...
Originally posted by Edwin Denson on 19 September, 2010 - 1:46 am
difference between Rated speed and Maximum speed in servo motors ?
New Replies:
So the torque is kept constant when the speed is within the rated speed? ...
Topic: Continuous process industries, DCS questions.
from the Chemical Engineering department...
PI Controller on a Reactive Distillation Column
Posted by Seyed Soheil Mansouri on 21 August, 2014 - 6:46 am
Tuning a PI controller for a dynamic reactive distillation column model.
Topic: Continuous process industries, DCS questions.
from the Heads, flows, pumps & motors combined department...
Pipe sizing for fluids and pump/motor selection
Originally posted by Eric on 20 August, 2014 - 5:14 pm
How do you select pipe size, metal as well as corresponding pump type with motors for process industry?
New Replies:
There are well known formulas for determining pressure drop across valves and thru piping and...
Originally posted by Harvard on 15 August, 2014 - 1:17 pm
Need to know how a slave device that lacks access to the RS-485 COMMON manage to maintain a Receiver common mode voltage between -7 and +12.
New Replies:
It has been a long time since I have interfaced to a device with a metal frame, every thing in my...
Many times 2 wire devices are referenced to frame ground and do not supply a terminal with + and -....
Topic: Power generation equipment control.
from the Power Station department...
Efficiency of ac generators
Originally posted by UNGKU KAMAL on 7 March, 2013 - 1:12 pm
When using ac generators in Power Stations, what are the advantages of using " Flux Cutting " types, compared to using " Magnetic Induction " types.
New Replies:
> Since you seem so well-steeped in Lorentz Law, why don't you explain it to us, and tell us...
Topic: PLCs and related questions.
from the Forum department...
Sample Program for Twido Suite
Posted by Gerry Finn on 20 August, 2014 - 6:15 pm
sending the value of a register as a SMS message
Posted by Eric on 20 August, 2014 - 5:34 pm
Selection process for gearboxes & chain for conveyors & packaging machines
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Adding Modbus register values together
Posted by David on 20 August, 2014 - 3:07 pm
How can you add MODBUS registers?
Topic: Software, including programming, OS issues, etc.
from the Forum department...
Wonderware Intouch clock
Posted by JazzyB on 20 August, 2014 - 2:01 pm
Intouch help in creating an HMI to regulate start and stop time
Topic: Human-Machine Interface and SCADA.
from the Forum department...
Web based HMI for Greenhouse
Posted by Bogaat on 20 August, 2014 - 1:41 pm
Looking for an affordable OPC Web based HMI solution
Topic: Communications systems and equipment.
from the Forum department...
Modbus Register Address
Originally posted by Whitepage on 15 August, 2014 - 4:30 am
I have a question about entering the register address in our program PME when I have a 4-digit address.
New Replies:
Actually, the original modicon only supported 0-999 addressing. Anyways, if your driver only...
Topic: PLCs and related questions.
from the Forum department...
Accessing Real Time in GE FANUC PLC
Originally posted by kk on 19 August, 2014 - 6:12 am
How to get real time in GE FANUC VERSAMAX PLC for a calculation.
New Replies:
Use ServiceRequest 16, not 7. There is no reason to mess with Time and Date, when you can use the...
Use Service Request 7, search the online help for how to use it: "SVC_REQ 7 Read or Change the...
Topic: Application Questions and Problems
from the Automation List department...
Control Valve Cycle Measurement
Posted by Gerald Beaudoin on 20 August, 2014 - 8:04 am
How to measure the control valve cycles?
Posted by Ali on 20 August, 2014 - 7:30 am
Advantages of isochronous load sharing over iso-droop mode configuration of three generators.
Topic: Information resources, documentation.
from the Electrical department...
Steam Consumption for 50 Hz and 60 Hz
Posted by Aravazhi on 20 August, 2014 - 4:21 am
The Steam consumptions for using 50Hz & 60Hz

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