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- since 1996 -
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Technical Discussions
Gustavo
Gustavo
06:29 Oct-09-2003
broadband transducer

Hi Everybody,
I'm looking for a broadband transducer, frequencies from a couple of
hundreds of Hz to at least 50Khz,we are going to make tests using
the impact-echo method and that are the frequencies that we expect to
measure in our structures made of refractory bricks. The structures are large
(e.g. a blast furnace) so the transducer should be relatively sensitive
Does anybody know a commercially available transducer of that kind?

Many thanks in advance.
Gustavo



    
 
 Reply 
 
Godfrey Hands
Consultant,
PRI Nadcap, United Kingdom, Joined Nov 1998, 301

Godfrey Hands

Consultant,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
301
08:17 Oct-09-2003
Re: broadband transducer
----------- Start Original Message -----------
: Hi Everybody,
: I'm looking for a broadband transducer, frequencies from a couple of
: hundreds of Hz to at least 50Khz,we are going to make tests using
: the impact-echo method and that are the frequencies that we expect to
: measure in our structures made of refractory bricks. The structures are large
: (e.g. a blast furnace) so the transducer should be relatively sensitive
: Does anybody know a commercially available transducer of that kind?
: Many thanks in advance.
: Gustavo
------------ End Original Message ------------

Gustavo,
We market Quasar Resonant Inspection equipment in Europe.
We use a swept sine wave excitation and broad band piezo electric transducers on the receive side.

These operate from "a few hundred Hz" up to "A few Hundred KHz".
They are dry coupled.
I don't know if one of these could do what you want.
I believe the off the shelf price for one of these is US$ 650.00, and it has a SMA connector.

I may be able to loan you one with a cable having BNC connector on it for tests. If it works, you could buy one (some).
Any damage or losses must be paid for however.

Contact me if you want.
Regards,

Godfrey Hands


    
 
 Reply 
 
Daniel H.Rice
Consultant, Ultrasonic Evaluation of Resistance Spot Welding
Daniel H. Rice Consulting Services, USA, Joined Jan 2003, 10

Daniel H.Rice

Consultant, Ultrasonic Evaluation of Resistance Spot Welding
Daniel H. Rice Consulting Services,
USA,
Joined Jan 2003
10
05:11 Oct-10-2003
Re: broadband transducer
In my experinces if I needed something special like that I had to call Krautkramer in Lewistown PA USA for the Special Probes Division. What your looking for is and old type of transducer. They can probably make you one rather reasonable, and rather quickly.

----------- Start Original Message -----------
: : Hi Everybody,
: : I'm looking for a broadband transducer, frequencies from a couple of
: : hundreds of Hz to at least 50Khz,we are going to make tests using
: : the impact-echo method and that are the frequencies that we expect to
: : measure in our structures made of refractory bricks. The structures are large
: : (e.g. a blast furnace) so the transducer should be relatively sensitive
: : Does anybody know a commercially available transducer of that kind?
: : Many thanks in advance.
: : Gustavo
: Gustavo,
: We market Quasar Resonant Inspection equipment in Europe.
: We use a swept sine wave excitation and broad band piezo electric transducers on the receive side.
: These operate from "a few hundred Hz" up to "A few Hundred KHz".
: They are dry coupled.
: I don't know if one of these could do what you want.
: I believe the off the shelf price for one of these is US$ 650.00, and it has a SMA connector.
: I may be able to loan you one with a cable having BNC connector on it for tests. If it works, you could buy one (some).
: Any damage or losses must be paid for however.
: Contact me if you want.
: Regards,
: Godfrey Hands
------------ End Original Message ------------




    
 
 Reply 
 
Vibra-Metrics
Vibra-Metrics
04:40 Oct-10-2003
Re: broadband transducer
Hello Gustavo,

The frequency range you specify is quite wide - We have accelerometers to cover most of that range, 1Hz to 40 kHz at +/-3dB. The link below will take you to the specification sheet. Email our sales staff for pricing and delivery information if this unit will satisfy your needs. Hopefully the temperature limitation of 120C is OK.
Regards,
Scot Wlodarczak, swlodarczak@vibrametrics.com

----------- Start Original Message -----------
: Hi Everybody,
: I'm looking for a broadband transducer, frequencies from a couple of
: hundreds of Hz to at least 50Khz,we are going to make tests using
: the impact-echo method and that are the frequencies that we expect to
: measure in our structures made of refractory bricks. The structures are large
: (e.g. a blast furnace) so the transducer should be relatively sensitive
: Does anybody know a commercially available transducer of that kind?
: Many thanks in advance.
: Gustavo
------------ End Original Message ------------




    
 
 Reply 
 

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