Process Instrumentation / Analytics / Weighing Systems SIWAREX

Instrumentation offer for dairy

Thread Starter: RAJKIRAN   Started: 5/15/2012 7:40 AM   Replies: 2

  5/15/2012, 7:40 AM

RAJKIRAN Joined 8/18/2009 Last visit: 4/17/2013 Posts: 464 Rating:  (32)

(0)  Dear Expert, I have prepared offer for dairy automation(upgradation)...we have select PCS7 system in this...I have knowledge about this PCS7  system but in instrumentation part I stuck.... could you guide me what is necessary to include in instrumentation part & also what is various scope in instrumentation work... It is really appreciated if any related doc. if you provide.... === Edited by RAJKIRAN @ 5/15/2012 1:27 PM [GMT ] === Rajkiran Patil Executive Project Eng r.- Process Automation

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  5/15/2012, 11:23 AM

Preetbrar Joined 4/29/2012 Last visit: 3/31/2013 Posts: 46 Rating:  (1)	(0)  Dear Raj, When there is upgrade definitely there will be P&I D and Instrumentation specifications for existing plant, you can sort out all instruments from it. I strongly recommend you should do selection of Instrumentation with the help of local Siemens guy. Regards, Davinder Singh
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  5/15/2012, 6:45 PM

dchartier Joined 9/27/2006 Last visit: 5/19/2013 Posts: 3931 Rating:  (619)	(0)  RAJKIRAN wrote: Dear Expert, I have prepared offer for dairy automation(upgradation)...we have select PCS7 system in this...I have knowledge about this PCS7  system but in instrumentation part I stuck.... could you guide me what is necessary to include in instrumentation part & also what is various scope in instrumentation work... It is really appreciated if any related doc. if you provide.... Hello rajkiran; As far as basic instrumentation is concerned, there are may available documents for training purpioses, such as this webpage: http://www.pacontrol.com/Instrument.html Whatever purpose your instrumentation is going to be used for you need to understand the requirements for any system before you start sel;ecting and integrating instruments. You need to understand the forces your transducers will be measuring in the process, the signals you can read directly in the PLC, the transmitters that will make the signals in the range of dstandard PLC modules, and the different ways they can be connected. You also need to know how and instrument is selected, and how to configure the different connections to the proces (flanges, weldolets, thermowells, isolation valves...). As far as working with instruments in PCS 7, there are a few choices to consider: -PCS 7 has entry blocks for analog measurements (MeasMon) that you8 can use to connect and manipilate the 4-20mA/0-10 V signals that your tranmitters will send fromm the field; -You can use Profibus-PA (with PDM software) to connect an instrument bus to the PLC; -You can use HART-enabled instruments (again with PDM and HART-IO modules) to connect your instruments point-to-point to HART analog input modules. SIMATIC Process Control System PCS 7 SIMATIC PDM How do you configure a PROFIBUS PA network in STEP 7?  Hope this helps, Daniel Chartier
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	Thank you for this post from: Preetbrar, RAJKIRAN