Replacing an MCC do I use DeviceNet or Ethernet?
By Bob Peterson on 4 September, 2015 - 7:58 am
I think DeviceNet is on its way out. It will be around for a long time just because of the...
EEx ia vs EEx [ia] vs [EEx ia]
Can anyone tell me what difference between EEx ia and EEx [ia] and [EEx ia]?
Why Is Current Transformer Secondary Short Circuited?
Posted by Anonymous on 6 June, 2007 - 11:47 pm
Why is current transformer secondary short circuited during the operation?
P Level Control of Multiple Tank System
PI or PID liquid level control system for 2 to 4 tanks.
Problem being faced in measurement of level of a tank under vacuum
Using a DP type transmitter to measure level of liquid in a tank under vacuum pressure.
Why Fuse Both Legs in a DC Control Cabinet?
Why would you want to fuse both the positive and negative side of a 24VDC control circuit?
By CuriousOne on 1 September, 2015 - 9:42 pm
>The below post does not help anyone on this mail list. One >should not post unless you wish...
By CuriousOne on 1 September, 2015 - 9:34 pm
CSA is on track but not giving us his all. Many 125 VDC bus on power plants are floating. A...
Mark V: S Core Re-booted Several Times
On Mark V TMR system S core rebooted several times and found stuck in A6 status. When S core rebooted manually it successfully attained A7 status.
High Performance Field Tools
How would you like to work in free time to create a solution that would increase productivity of the field data input?
Load Gear Oil Leakage GE 6B Gas Turbine
We had a Leak problem on Load Gear Reducer of Gas Turbine 6B GE supplied.
By Aziz on 31 August, 2015 - 1:12 am
Dear Sir, How did the re-test went on? > today we are going to re-test. and we will see. ...
Rosemount Pressure Transmitter 2051TG vs 2051TA
Compare the 2051TG and 2051TA Rosemount Pressure Transmitter
By Quangnguyenvan on 24 August, 2015 - 3:18 am
Thank you very much for your clarify. If the TG, low side open to atmospheric then I agree that...
Inductance Measurement of 3 phase motor
How to calculate cable size, M.T.S and MDP
How to calculate cable size, M.T.S and MDP
Migrating Siemens PCS7 application to SPPA-T3000
We are looking for engineering support to integrate our gas turbine application based on PCS7 into the T3000 application server.
By SPPA-T3000 on 28 August, 2015 - 6:21 am
Kindly share your contact details to get in touch with you. We can help. Regards, JVS >...
How Does The Output Of The Pid Controller Remain Non-Zero?
How does the output of the PID controller remain non-zero after the error becomes zero?
By Peter Nachtwey on 24 August, 2015 - 7:00 pm
There are non-integrating and integrating systems. Temperature and velocity control are...
By BDThompson on 21 August, 2015 - 9:57 am
If your output is non zero after the error reaches zero, your integrator (the I term in PID) has...
4 - 20 ma Length Calculation
Is there a certain calculation that I can use to find out what size Wire to use with a 4-20ma signal?
Torque Tube in Displacer Type Level Transmitter
What is the need for torque tube in displacer type level transmitter?
By Miky on 26 August, 2015 - 4:54 pm
> What is the need for torque tube in displacer type level > transmitter? It's working. ...
Effect of High Modified Wobbe Index on GE frame 9E Combustor Dynamics
A GE PG9171E DLN 1.0 gas turbine is operating at a Modified Wobbe Index of upto 53 (13% off design) whereas the design limit is 5% deviation. What effect does this have on Gas turbine hardware?
How does calibration vary and what happens when low pressure tapping connected to high side of DP transmitter and vice versa?
My radar non contact level transmitter FF compatible is having fluctuations in indications from 14 to 55%.
11kv Motor Failure Checks
High tension motor failure
Gas Flow Rate for Gas Engine
can some tell me how to calculate gas flow rate to run an engine?
How do you measure correct level under vacuum?
By Daniel on 22 August, 2015 - 8:09 am
Cerabar is not for tanks under vacuum. You have to use a differential pressure model, like...
Revamping of old boiler with regards to pressure and flow.
Generators and leading power factor
Leading power factor for backup generators
By GEETHA G on 21 August, 2015 - 5:23 am
we can attain average power factor of 1. We can come to near to unity by adopting Thyristor...
Controlling Variable Frequency Drive Speed
Controlling motor speed with VFD
7FA Gas Turbine Crank Cooling
Is it recommended not to crank cool a 7 FA Gas Turbine too many times. We do a lot here for maintenance. Is there a limit?
Explain How Thread is Worn Down
I am wanting to explain to a customer as detailed as possible how the wear on thread could present a safety issue by putting together and taking apart NPT threaded iron.