Previous in Forum: Quick Exhaust Valve For On/Off Valve Actuator   Next in Forum: How to connect Delta DVP-12SC Type plc with Bar code scanner?
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
9 comments
Rate Comments: Nested
Phys
Guru
Engineering Fields - Instrumentation Engineering - EE from the the Wilds of Pa.

Join Date: Feb 2006
Location: middle of nowhere, Pennsylvania
Posts: 2603
Good Answers: 63

Ultrasonic Flow Meter Trouble Shooting

09/14/2011 5:26 PM

We have a GE ISX878 with the 4MHz 408 clamp on transducers, and despite all programming efforts (ALL parameters are entered and double checked) we get no apparent return signal, as we flash and E2 error code that syas that is the problem. We have nothing to detect 4MHz signals. Is there some way to verify an output signal without a high frequency sound detector? If there is an output, then I would know the problem is in the transducer mounting or the instrument parameter programming. Can you easily rent a high freq. detector? Ultrasonics is not an area I venture into often.

__________________
 Remember when reading my post: (-1)^½ m (2)^½
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
wrenchpuller
Commentator

Join Date: Dec 2007
Location: texas
Posts: 92
Good Answers: 8
#1

Re: Ultrasonic Flow Meter Trouble Shooting

09/14/2011 10:01 PM

Hi,

I have some questions for you:

Is this a new installation?

Is it possible to see on the transmitter's display what the sound speed value is?

What type of product are you measuring?

Is the sound speed set up for that type product?

Sorry I give you questions instead of answers but I just need some more info. If is not a new installation and the transmitter was working at one time then is possible that the transducers moved and became misaligned.There may be scale, debris or other type of obstructions between the pipe and the transducers.

One time after a turnaround in one of or units, one of our ultrasonic meters wouldn't work during start up , it took me I while to figured out that someone hit and bent one of the transducers (scaffold builders).

Thanks

__________________
 "The older I get -The better I was"
Register to Reply
Phys
Guru
Engineering Fields - Instrumentation Engineering - EE from the the Wilds of Pa.

Join Date: Feb 2006
Location: middle of nowhere, Pennsylvania
Posts: 2603
Good Answers: 63
#3
In reply to #1

Re: Ultrasonic Flow Meter Trouble Shooting

09/15/2011 6:51 AM

New

Sound speed - zilch, nil, nada - it just looks like this -------- on the screen

__________________
 Remember when reading my post: (-1)^½ m (2)^½
Register to Reply
Instruments-guy-SAV
Commentator
Venezuela - Member - New Member

Join Date: Aug 2010
Location: Venezuela
Posts: 88
Good Answers: 5
#5
In reply to #3

Re: Ultrasonic Flow Meter Trouble Shooting

09/15/2011 12:33 PM

Phys,

If this transmitter is brand new, I could recommend you contact to GE Sensing people support in order to check the model, parameters and application, if there any problem with the sensors or transmitter maybe you can get a new one without pay additional money (guarantee)

Regards

JP

__________________
 Instruments-guy-SAV
Register to Reply
Iris
Guru

Join Date: Jul 2010
Posts: 669
Good Answers: 176
#2

Re: Ultrasonic Flow Meter Trouble Shooting

09/14/2011 10:30 PM

The energy from the transducers will get absorbed/disbursed/ by internal corrosion in the pipes and will not be available for either reception or reflection to the receiving transducer.

How old is the pipe and is it subject to corrosion from the medium or pollutants in the medium?
Register to Reply
Phys
Guru
Engineering Fields - Instrumentation Engineering - EE from the the Wilds of Pa.

Join Date: Feb 2006
Location: middle of nowhere, Pennsylvania
Posts: 2603
Good Answers: 63
#4
In reply to #2

Re: Ultrasonic Flow Meter Trouble Shooting

09/15/2011 6:52 AM

Sanitary finish pharmaceutical piping on a skid under construction. Been QC'd for finish of 20 Ra, EP.

__________________
 Remember when reading my post: (-1)^½ m (2)^½
Register to Reply
Grand Poobah
Power-User

Join Date: Oct 2010
Location: OZ, otherwise known as Oklahoma were the wind comes sweeping down the plains.
Posts: 159
Good Answers: 4
#7
In reply to #4

Re: Ultrasonic Flow Meter Trouble Shooting

09/16/2011 8:28 AM

Skid under construction? Is there fluid in the pipe? No fluid, no return signal.
Register to Reply
ronclarke
Guru

Join Date: Nov 2010
Posts: 507
Good Answers: 3
#8
In reply to #2

Re: Ultrasonic Flow Meter Trouble Shooting

09/16/2011 12:19 PM

Well ,not really. I have found fluid levels in boiler pipe that was very corroded and thats using a 5 Mhz transducer.

Ron

__________________
 I went to Texas A&M, I am proud to be an Aggee. Proud to be an Aggey, Proud to be an Agie.............Proud to have gone to Texas A&M.
Register to Reply
TexasEd
Associate

Join Date: Apr 2010
Posts: 29
Good Answers: 6
#6

Re: Ultrasonic Flow Meter Trouble Shooting

09/16/2011 8:24 AM

If you are certain that you set up the unit correctly, then you have a product warranty issue with GE/Panametrics.

You did not say anything about contacting the vendor. Work with their customer service and technical support personnel.

You don't need to rent special equipment for getting this working.
Register to Reply
Empi
Participant

Join Date: Sep 2011
Posts: 1
#9

Re: Ultrasonic Flow Meter Trouble Shooting

09/16/2011 2:37 PM

Hi,

Have you checked the continuity of the signal cables?

If not please do so.

Regards
Register to Reply
Register to Reply
Have a Different Question?
9 comments
Copy to Clipboard

Users who posted comments:

Empi (1); Grand Poobah (1); Instruments-guy-SAV (1); Iris (1); Phys (2); ronclarke (1); TexasEd (1); wrenchpuller (1)

Previous in Forum: Quick Exhaust Valve For On/Off Valve Actuator   Next in Forum: How to connect Delta DVP-12SC Type plc with Bar code scanner?

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Instrumentation:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (67 right now)
Show Members
Advertisement