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3

Level Switch


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#1 AndyChemEng

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Posted 17 January 2020 - 04:45 AM

Hi all,

 

I have an issue with a high level switch in a vessel that activates periodically when we charge powder into the vessel.

 

It is a vibrating tuning fork design.

 

Is there any other model types that could be used that might be more suitable at not falsely activating when powder charging?

 

The vessel already has a radar probe installed and this high level is additional protection against overfill.

 

Andrew



#2 breizh

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Posted 17 January 2020 - 07:33 AM

Hi ,

My experience with fork on powder is similar to yours . How big is your silo?

By chance can you install load cells or a second radar ? more expensive but works.

 

Note : Take a look at the link underneath , you may contact them for your application :

https://www.th.endre...vel-measurement

 

Good luck

Breizh


Edited by breizh, 18 January 2020 - 04:36 AM.


#3 thorium90

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Posted 17 January 2020 - 09:03 AM

Or maybe you could give the tuning fork a shade?



#4 AndyChemEng

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Posted 04 June 2020 - 09:48 AM

Thank Breizh / Thorium,

 

We operate with pressure pads to monitor/control the volume from a process perspective. The level switch is for protection against overfill.

I think we are going to attempt to install a spray-ball adjacent to the switch with the hope that this prevents a build-up of powder accumulating.

The shade idea may be a possible alternative if this proves unsucessful.

 

Thanks for the replies.

 

Andrew



#5 thorium90

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Posted 04 June 2020 - 10:11 AM

Or maybe, put some compressed air nozzles aimed at at the fork area to blow the dust off of it every now and then.



#6 breizh

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Posted 04 June 2020 - 06:22 PM

Hi ,

You might consider other technology more reliable these days , check with VEGA for their new generation of radar .

https://www.vega.com...ion/vegawave-61

Good luck

Breizh


Edited by breizh, 05 June 2020 - 06:05 AM.





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