Control.com - Nerds in Control
Cables for Gas/Fire Detectors
New Replies:
By Prem Kumar on 16 October, 2011 - 8:28 am -
Go ahead and use 3 cores of the cable, but i suggest you use a over-all shielded 2 x 1 pair cable....
By Nano on 15 October, 2011 - 12:08 pm -
WE have gas detector which is use triad shielded #18awg. this cable was damage by the rat....
C++ modbus working library for Microsoft VS2008
New Replies:
By pvbrowser on 16 October, 2011 - 1:10 am -
Our http://pvbrowser.org project includes a modbus class.
...
why gas turbines particularly in LNG application are called 5D frame, 6 frame , 7 frame etc
New Replies:
> because all gas turbines are set in a steel frame in which the frame can be
> adjusted...
By J knight on 15 October, 2011 - 1:02 am -
> Can someone please tell me why gas turbines particularly in LNG application
> are called...
problem with operators using the emergency stop circuits to power down a line rather than doing the "right thing" and going through the sequence of pressing the individual stop PB
New Replies:
EZER... I suggest you contact Allen-Bradley (ABRockwell) for their 2011 document covering Emergency...
By Hadz on 14 October, 2011 - 10:37 pm -
> We have a problem with operators using the emergency stop circuits to power
> down a line...
Collective bargaining agreements and labour laws were (and still are) necessary in some parts of...
By Ron Sewell on 12 October, 2011 - 10:28 pm -
The ESTOP must of course be easily reached. How about a nice shrill EMERGENCY horn that tells the...
By tci on 12 October, 2011 - 10:01 pm -
> Hmmmmm. The international standard for operators not following plant operating
>...
Ezer... further to my earlier response, there is a rather simple logic-circuit to implement the...
Ezer... start with:
http://control.com/thread/950636217
Regards, Phil Corso...
By James Ingraham on 11 October, 2011 - 6:18 pm -
If you want the operators to do something, make it the easiest thing for them to do. It seems like...
By Steve Myres on 11 October, 2011 - 5:32 pm -
Yes, E-Stops have to be readily accessible (what if there's an emergency?).
I'm sure the...
> We have a problem with operators using the emergency stop circuits to power
> down a line...
Which is the best measurement solution for crude oil + gas
New Replies:
By nekidOS on 13 October, 2011 - 1:46 am -
Hello!
Have you some books or articles about measurement errors separator units. Where author(s)...
Need basic architecture document & function block reference guide of Centum XL system
Honeywell TDC3000 LM
New Replies:
Honeywell has legacy manuals available on their site. I don't see LM manuals, but most of the 620...
Books for studying about flowmeters and control systems
New Replies:
There's numerous instrumentation/control text books, like Process Control Instrumentation...
certificates for naval use
New Replies:
There are numerous maritime certifications for controls and instrumentation.
Allen Bradley lists...
How do you mean? Security certificates like the ones used to verify trusted communications, or are...
what is difference?
New Replies:
By mahantesh on 4 October, 2011 - 4:23 am -
In pnp transistor n-type material is sandwiched between two p-type materials. Where as in npn...
Procedure for setting the thrust probes on a GE gas turbine
New Replies:
Hi Jason,
I do have a procedure that was written by a controls TA.
It is for a 9E and also...
A written procedure? For something to do with adjustment/calibration of a device providing...
What is the difference between hazardous area & restricted areas
New Replies:
By Ravi on 29 September, 2011 - 11:30 am -
Generally Hazardous area is an area where a hazard is present such as Explosive gas, chemicals,...
Nirvana starting to eat us out of house and home
Honeywell IPC623-60 software Manual
New Replies:
Download manuals here:
http://downloads.applied-automation.com/sam/honeywell/620/index.html
...
How to select a relay and specify one to a vendor.
If you have worked with the ADC0804, I would like to know how do you make sure you always read the LATEST measurement out of the 8 pins.
New Replies:
By mayuri on 23 September, 2011 - 2:00 pm -
is it possible to connect LM 35 to ADC0804 and as an output i will connect 8 LEDs to see my...
September 2011 issue of the IFSA Newsletter
panel builder and dh485 pv micro300 m3a19L1 need to set up coms for panel builder
New Replies:
I'm at home and don't have access to my PB32 right now, but there are several ways to connect PB32...
Voltage testing on honda 7000W generator
New Replies:
By bob peterson on 21 September, 2011 - 9:50 am -
Generator load is normally expressed in VA not amps.
You have a total load of 2.5X240 = 600 VA.
...
We have a tank that measures 10 feet in diameter and is 15 feet tall that we are needing a formula for determining the gallon capacity for. Can you help?
New Replies:
To anyone still interested... the September, 2011 issue of "Chemical Engineering"...
Simplex 4001 fire panel has master earth trouble
Can anybody tell what is the practical significance of orifice beta ratio between 0.3 to 0.7?
New Replies:
By ken on 13 September, 2011 - 5:34 pm -
I am having the same problem.I am using miller to calculate and got beta ratio 0.08.
What will...
Glands for Exd equipments
New Replies:
By santhiraj on 11 September, 2011 - 10:52 am -
> If your regulations state that you need to follow IEC rules, then IEC 60079-14 part
----...
By anonymous on 11 September, 2011 - 8:22 am -
If your regulations state that you need to follow IEC rules, then IEC 60079-14 part does not state...
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2013 Nerds in Control, LLC. All rights reserved.
Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.
Fortune
The wind doth taste so bitter sweet,
Like Jaspar wine and sugar,
It must have blown through someone's feet,
Like those of Caspar Weinberger.
-- P. Opus
