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I am working with a tdc1000-tdc7200 evm board for water level detection. I am trying to mount a steminc 1MHz ultrasonic transducer under a polycarbonate jar to measure the water level in the jar. According to TI's recommendation (source) I am using Cyanoacrylate for transducer mounting. I am wondering is there other options of adhesive that I can use for mounting? I am looking for an adhesive that does not react with water. Also TI recommended using hot glue over sensor which also absorbs. Is there a better alternative that does not hinder transducer performance?

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Water improves superglue's bonding, I'm not sure I see the problem with using it (and the hot glue) in your application.

In any case, I suspect that they specify the CA glue and hot glue because they provide a good bond, are inexpensive and reversible.

That said, I have used a variety of 2 part epoxies for mounting sensors to a variety of materials. Make sure you've got it where you want it because once it sets, there's no do-overs.

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    $\begingroup$ Hi DLS3141, thanks a lot for your suggestion. Can you kindly share your experience using 2 part epoxies for mounting sensors? $\endgroup$
    – Nil_2018
    Mar 13 '17 at 17:17

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