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Technical Discussions
Neil Gibson
Neil Gibson
08:57 Jan-19-2004
Low frequency transducers

Does anyone know of a source for low frequency UT transducers. Anything below 50kHz - ideally around 20kHz.

Alternatively, does anyone know how to design such things?


    
 
 Reply 
 
Fred Beck / TACTIC
Fred Beck / TACTIC
09:57 Jan-19-2004
Re: Low frequency transducers
----------- Start Original Message -----------
: Does anyone know of a source for low frequency UT transducers. Anything below 50kHz - ideally around 20kHz.
: Alternatively, does anyone know how to design such things?
------------ End Original Message ------------

Companies which manufacture ultrasonic cleaners use transducers in this frequency range regularly. You may want to contact Crest Ultrasonics, Sonic systems or Ultrasonic Power corp. All can be found on line I'm sure.


    
 
 Reply 
 
James Barshinger
Engineering
General Electric Global Research Center, USA, Joined Aug 2000, 8

James Barshinger

Engineering
General Electric Global Research Center,
USA,
Joined Aug 2000
8
08:22 Jan-20-2004
Re: Low frequency transducers
----------- Start Original Message -----------
: : Does anyone know of a source for low frequency UT transducers. Anything below 50kHz - ideally around 20kHz.
: : Alternatively, does anyone know how to design such things?
: Companies which manufacture ultrasonic cleaners use transducers in this frequency range regularly. You may want to contact Crest Ultrasonics, Sonic systems or Ultrasonic Power corp. All can be found on line I'm sure.
------------ End Original Message ------------

Depepending on what you are looking for, there are several possibilities that I can think of.. Airmar manufactures air and marine transducers in this frequency range. The url is www.airmar.com. The air transducers will be appropriate for aircoupled UT, and the marine (depth/fishfinder) transducers will be appropriate for immersion testing.

Dukane Corporation (www.dukane.com) manufactures ultrasonic welding transducers. These transducers are built for high power and narrow bandwidth. Their suitability for use depends on your application.

Krautkramer (now GE Inspection Technologies) offers several low frequency transducers suitable for NDT in their product line from Germany, though I don't know if they go below 100kHz.

Both Panametrics and Matec have a couple of low frequency offerings but again I don't know if they go as low as 20 or 50kHz.

Hope this helps.

-Jim



    
 
 Reply 
 
Hielscher - Ultrasound Technology
Hielscher - Ultrasound Technology
02:29 Oct-08-2004
Re: Low frequency transducers

Does anyone know of a source for low frequency UT transducers. Anything below 50kHz - ideally around 20kHz.

Hielscher (http://www.hielscher.com) manufactures and distributes compact laboratory devices as well as a wide product range of industrial ultrasonic processors of 50 to 16000 Watts for many processes, such as the homogenizing, disintegration, emulsifying, dispersing, deagglomeration and particle size reduction, nano-sizing, sieving and cleaning.
Frequencies are between 90 and 20kHz. All units from 500 to 16,000 watts are running at 20kHz. (see http://www.hielscher.com/ultrasonics/industry.htm)



    
 
 Reply 
 
Sue Bennett
Sue Bennett
00:18 Sep-07-2005
Re: Low frequency transducers

----------- Start Original Message -----------
: : : Does anyone know of a source for low frequency UT transducers. Anything below 50kHz - ideally around 20kHz.
: : : Alternatively, does anyone know how to design such things?
: : Companies which manufacture ultrasonic cleaners use transducers in this frequency range regularly. You may want to contact Crest Ultrasonics, Sonic systems or Ultrasonic Power corp. All can be found on line I'm sure.
: Depepending on what you are looking for, there are several possibilities that I can think of.. Airmar manufactures air and marine transducers in this frequency range. The url is www.airmar.com. The air transducers will be appropriate for aircoupled UT, and the marine (depth/fishfinder) transducers will be appropriate for immersion testing.
: Dukane Corporation (www.dukane.com) manufactures ultrasonic welding transducers. These transducers are built for high power and narrow bandwidth. Their suitability for use depends on your application.
:Krautkramer (now GE Inspection Technologies) offers several low frequency transducers suitable for NDT in their product line from Germany, though I don't know if they go below 100kHz.
: Both Panametrics and Matec have a couple of low frequency offerings but again I don't know if they go as low as 20 or 50kHz.
: Hope this helps.
: -Jim
------------ End Original Message ------------

Airmar's Industrial Products Group has a new 19.5kHz ultrasonic transducer in addition to the standard frequencies of 30kHz, 41kHz and 50kHz


    
 
 Reply 
 
Grant Reig
Grant Reig
04:27 Sep-08-2005
Re: Low frequency transducers
Panametrics does make a X1021 transducer which is a 50kHz narrow band transducer. It, however, is different from that found in the ultrasonic cleaners in that it is not designed for high power output. We typically use the X1021 in pairs for NDT on concrete, wood & other attenuating materials that require the use of low frequencies to penetrate the material.

Hope this helps - Grant



    
 
 Reply 
 
George K. Czerny-Holownia
Consultant
Sensor Technology Limited, Canada, Joined Jan 2002, 1

George K. Czerny-Holownia

Consultant
Sensor Technology Limited,
Canada,
Joined Jan 2002
1
07:25 Sep-08-2005
Re: Low frequency transducers
Sensor Technology Limited has been making piezoelectric ceramics for almost 23 years from its facilities in Collingwood, Ontario, Canada.
RE: Low-frequency transducers. Check our SX01 on our website at www.sensortech.ca.
Sensor Technology is a custom manufacturer of transducers, hydrophones and piezoelectric ceramics and piezoelectric equipment. The company serves commercial, military, university and research laboratory customers around the world. Any questions?
Start with George Czerny-Holownia at gczerny@sensortech.ca.


----------- Start Original Message -----------
: : : : Does anyone know of a source for low frequency UT transducers. Anything below 50kHz - ideally around 20kHz.
: : : : Alternatively, does anyone know how to design such things?
: : : Companies which manufacture ultrasonic cleaners use transducers in this frequency range regularly. You may want to contact Crest Ultrasonics, Sonic systems or Ultrasonic Power corp. All can be found on line I'm sure.
: : Depepending on what you are looking for, there are several possibilities that I can think of.. Airmar manufactures air and marine transducers in this frequency range. The url is www.airmar.com. The air transducers will be appropriate for aircoupled UT, and the marine (depth/fishfinder) transducers will be appropriate for immersion testing.
: : Dukane Corporation (www.dukane.com) manufactures ultrasonic welding transducers. These transducers are built for high power and narrow bandwidth. Their suitability for use depends on your application.
: : Krautkramer (now GE Inspection Technologies) offers several low frequency transducers suitable for NDT in their product line from Germany, though I don't know if they go below 100kHz.
: : Both Panametrics and Matec have a couple of low frequency offerings but again I don't know if they go as low as 20 or 50kHz.
: : Hope this helps.
: : -Jim
: Airmar's Industrial Products Group has a new 19.5kHz ultrasonic transducer in addition to the standard frequencies of 30kHz, 41kHz and 50kHz
------------ End Original Message ------------




    
 
 Reply 
 
lusily
lusily
08:49 May-14-2012
Re: Low frequency transducers
In Reply to Neil Gibson at 08:57 Jan-19-2004 (Opening).

You can go to this site to see http://www.osenon.com/en/product.asp

    
 
 Reply 
 
massimo carminati
Consultant, AUT specialist
IMG Ultrasuoni Srl, Italy, Joined Apr 2007, 691

massimo carminati

Consultant, AUT specialist
IMG Ultrasuoni Srl,
Italy,
Joined Apr 2007
691
21:06 May-15-2012
Re: Low frequency transducers
In Reply to Neil Gibson at 08:57 Jan-19-2004 (Opening).

Try to talk to IMG Ultrasuoni; they manufacture low frequency transducers for concrete since 20 years.

    
 
 Reply 
 

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