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PGA460: Waterproof casing

Hadrien Busieau
Prodigy 15 points
Part Number: PGA460

Hi,

I would like to integrate an enclosed ultrasonic transceiver (like this one) in a closed casing (like this one).

I would say that the ultrasonic transceiver need to be touched by a soft material in order to let it ring. Do you have any suggestion about that ?

Generally speaking, do you have any information about how to  design an enclosed ultrasonic sensor with waterproof casing ? What type of joint do I need to use between the housing and the transceiver ?

Thank you for your help, 

  • 0
    TI__Mastermind 27780 points
    Hi Hadrien,

    You are correct that the transducer should be allowed to vibrate freely by securing the transducer to the casing with a soft/malleable and low density material. Otherwise, the transducer will be dampened and under-perform if a hard or stiff method of securing the transducer is used.

    The few fully enclosed modules I have seen typically use a thin rubber gasket/ o-ring to separate the transducer from the enclosure. I don't have the details on the specific material composition. I recommend that you reach out to the transducer manufacturer / supplier, and find out if they have any recommendations.
    Airmar is has an example at:
    • www.amazon.com/.../ref=cm_cr_arp_d_product_top
    • www.airmartechnology.com/.../17-442-01.pdf