Actually the strain reliefs are a part of the seal. I epoxy the EM172
inside the strain relief and then when you mount it in the wall of your
enclosure you use a sealant on the mounting threads and o-ring. This metho=
d
relies on the moisture-proof seal on the capsule. While I don't recommend
it for use as a hydrophone our experience shows it is good protection from
the weather.
I used it with a froglogger years ago mounting it in a pvc tube and then in
a 2-liter coke bottle for additional protection. We then glued foam rubber
on top of the 2-liter plastic bottle to dampen the noise from the raindrops=
.
Then it was mounted in a tree in the Spring of 2008. A few months later we
suffered a direct hit from hurricane Ike. It was mounted in a tree near a
stock pond on my son's horse farm. He lost 42 large trees due to the
hurricane but the tree the mic was in was spared. I just retrieved that mi=
c
a couple of months ago because they we enlarging the stock pond and had to
cut down the tree the mic was mounted in. It's a little discolored but
still works all these years later. I haven't run any tests in the lab but i=
t
sounds good just like the day it was installed.
Gene
From: [nae
Sent: Sunday, July 26, 2015 6:38 PM
To:
Subject: RE: [Nature Recordists] Weatherproofing Mics?
So you're saying EM-172s are already moisture proof, Gene? We just need to
seal the edges of the holes they're mounted in? Did you also provide any
kind of shelter to avoid rain hitting the capsules directly?
I assume the strain reliefs are just a convenient method of mounting them,
not an essential part of the seal?
Peter Shute
> -----Original Message-----
> From:
>
> Sent: Saturday, 25 July 2015 1:13 AM
> To:
> Subject: RE: [Nature Recordists] Weatherproofing Mics?
>
>
>
> A few years ago I was shipping a froglogger that used a LS-7
> and it had weather-proof EM-172 mounted in the sides of a
> pelican case. I haven't been able to do much with
> frogloggers lately because of health issues. Just got out of
> hospital again a few days ago.
>
>
>
> I have some cable strain reliefs that I mount the EM172
> inside of with a generous amount of epoxy. The only part of
> the EM172 exposed is the face of the capsule with the
> moisture-proof seal. I'll see if I can find a few and send
> them to ya. Email me off list and give me an address. You
> also need some sealer around the hole where it mounts in the
> side of the case.
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