The Elsmar Cove Business Standards Discussion Forums More Free Files Forum Discussion Thread Post Attachments Listing Elsmar Cove Discussion Forums Main Page
Welcome to what was The Original Cayman Cove Forums!
This thread is carried over and continued in the Current Elsmar Cove Forums

Search the Elsmar Cove!

Wooden Line
This is a "Frozen" Legacy Forum.
Most links on this page do NOT work.
Discussions since 2001 are HERE

Owl Line
The New Elsmar Cove Forums   The New Elsmar Cove Forums
  Measurement, Test and Calibration
  PM AND SMART TRANSMITTERS

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   PM AND SMART TRANSMITTERS
VALENTINEO
Lurker (<10 Posts)

Posts: 4
From:Warri, Delta state, Nigeria
Registered: Aug 2000

posted 21 August 2000 11:11 AM     Click Here to See the Profile for VALENTINEO   Click Here to Email VALENTINEO     Edit/Delete Message   Reply w/Quote
Does preventive maintenance have any positive effect on smart transmitters? or should they be run to failure and replaced?

IP: Logged

Jerry Eldred
Forum Wizard

Posts: 136
From:
Registered: Dec 1999

posted 21 August 2000 11:55 AM     Click Here to See the Profile for Jerry Eldred   Click Here to Email Jerry Eldred     Edit/Delete Message   Reply w/Quote
I have heard both sides of this issue. This is, again, an issue where you need to evaluate the transmitters performance against the process or application tolerances. If the unit will drift out of an acceptable tolerance limit and still be operating properly (other than the tolerance drift), then there is certainly value, as you need to be sure that the readings it gives you are accurate enough for your need. There are applications, also, where transmitter accuracy is not important, and an inaccurate reading is not important to the correct performance of the process being monitored. Those questions will need to be answered before making such a decision.

The other issue is unstable operation. I certainly won't be the one to give someone an excuse to save moneyt by not doing correct maintenance. It could well be (in some applications) that accuracy is not an issue, but unstable operation is still important. In those cases, maintenance is still important, but for other reasons. I don't believe there is a single correct answer to this. Each application needs to be evaluated to determine how much change in the transmitter's readings and feedback is acceptable. The implications of an incorrect reading from the transmitter must be evaluated, and determination made as to what amount of error can be tolerated. How often, and what type of maintenance is performed must be based on the answer to that evaluation.

------------------

IP: Logged

All times are Eastern Standard Time (USA)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply Hop to:

Contact Us | The Elsmar Cove Home Page

Your Input Into These Forums Is Appreciated! Thanks!


Main Site Search
Y'All Come Back Now, Ya Hear?
Powered by FreeBSD!Made With A Mac!Powered by Apache!