Using single transmitter for both DCS & ESD
Using single transmitter for connecting to both DCS & ESD systems
By Lamri 3535 on 20 January, 2019 - 5:10 am
Yes of course, the transmitter shall be powered (alimented) by the ESD/SIS system and the value...
By Lamri 3535 on 16 January, 2019 - 6:27 am
I think in a few years ago this solution was impossible and not recommended, but not with the the...
The security system of a belt conveyor must have emergency keys. I have a question about the impedance of the security relay in this situation.
Does an EMC/EMI filter go before the VFD or after the VFD?
Can anybody explain the difference of Exd & Exde protections??
What is the difference of Exd & Exde protections?
By Ramesh on 8 January, 2019 - 5:32 am
To add: If a Ex e Juntion box or control cabinet is used then the internal non switching components...
GE Fr9E Turbine Inner Barrel Temperature
GE Fr 9E Turbine inner barrel temperatures (TTIB) have increased from 155 Deg C to 195 Deg C while GT ramped up from 60MW to base load (125MW).
New To Instrumentation Looking for Resources
Help needed for learning instrumentation.
By David Ferguson on 30 December, 2018 - 11:15 pm
ISA Instrument Society of America 🤪, now the International Society of Automation.....great...
Gas Turbine IBH Valve Opening Without Any Command
GE Frame 6 B Turbine Inlet Bleed Heating Valve opening without any command.
Air Flow Requirement for Pneumatic Instruments
Posted by alwaysahobbyist on 11 December, 2018 - 4:37 am
How much air flow would be required for an installation having multiple numbers of Pneumatic Controllers and Transmitters, Control Valves, and Loader Valves?
Can I Split Off 110V from 220V L1 (or L2) and Neutral?
Will I be breaking codes powering 110V equipment in a 220V enclosure using L1 (or L2) and neutral without a step-down transformer?
Mechanical Engineer Looking for Instruction in Hydraulic Valve Repair
Posted by Manolis Pairis on 20 November, 2018 - 4:16 am
Looking for an expert in proportional hydraulic valves repair
By d on 2 January, 2019 - 9:28 pm
Get lab tests for the fluid purity, particulates. otherwise you solve the problem only by high...
By Manolis Pairis on 2 January, 2019 - 6:39 am
Hello and Happy new year! If anyone has some time and can help with my questions above please...
By Manolis Pairis on 11 December, 2018 - 5:46 am
Hello and thank you once again for your help. I sent the oil for tests and i am waiting the...
We are getting around 140VAC in 24VDC control cables
I would like to consult about the breakdown of 11KV 800A VCB
Speed of Synchronous Generator
Posted by Muhammad Salman on 26 February, 2010 - 4:08 pm
Why Speed of Synchronous Generator decrease with increasing speed?
Earth Fault Relay Settings for 11kv Distribution Feeders
Why is earth fault relay settings for distribution feeders in solidly grounded systems usually between 10% and 20%?
ACME control transformer - connecting secondary and earth terminals
Automatic Generation Control
This is a question about AGC function
Gas valve (SRV/GCV) Actuator Plug Oil Leakage
Hydraulic Oil leaks from the gas valve actuator plug
Control Circuit_neutral/ 024VDC switching
Neutral/ 024VDC switching in control circuits.
4-20 to resistance convertor
Posted by Kevin Mc on 9 May, 2003 - 10:48 am
I need to convert a 4-20 mA signal to a three-wire pot, 0-5k ohms. I am outputting a 4-20mA signal from a controller and need it to manipulate a resistance...
Running 24VDC and 220VAC Signals in the Same Cable
I wonder if the same multicore control cable can carry both 24vdc and 220vac signals?
System Powered and Field Powered Devices in Mark V
How are the contact inputs in Mark V powered?
UPC Barcode Feedback Hydraulic Cylinder
Hydraulic cylinder shafts with UPC barcode lazer etched on shaft for position feedback
Unconventional Motion Profiles
Trying to produce a motion profile that does not exist in the motion controller.