DIY inline refractometer

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chris2012
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DIY inline refractometer

Post by chris2012 » Mon May 20, 2019 6:08 pm

Just been working on this little project recently - https://www.anfractuosity.com/projects/ ... actometer/

I'm going to post a video of a test I just did of the refractometer output as the water was heated from 17C to a bit before 70C (before the Pi crashed, due to being too close to the refractometer I think, doh!)

The idea being I'm going to convert the image from the refractometer to a digital brix, so that I can see if the brix drops below 1.010SG during sparging.

I'm trying to at the moment generate a calibration curve for water up to 70C.

I'm going to redesign it too, using SS fittings, to mitigate some slight leaks heh.

chris2012
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Re: DIY inline refractometer

Post by chris2012 » Mon May 20, 2019 6:45 pm


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Mjr6313
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Re: DIY inline refractometer

Post by Mjr6313 » Wed May 29, 2019 1:25 am

It's a great idea I'm really impressed. I can see real world applications for commercial brewery as well for consistant brews.
Please keep me updated what equipment did you use.
My wife wanted me to get a hobby now I make beer. She says I'm always in my shed I KEEP TELLING HER IT WAS HER IDEA.

chris2012
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Re: DIY inline refractometer

Post by chris2012 » Wed May 29, 2019 10:43 am

Hey, you can get proper inline refractometers, it's just they're really expensive as far as I'm aware, around 8k USD from what I read recently.

I'm just waiting for some triclamp fittings from China, to make a better version that hopefully doesn't have the uneven light distribution you can see in the video, which caused me problems when trying to process the images.

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Mjr6313
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Re: DIY inline refractometer

Post by Mjr6313 » Wed May 29, 2019 6:39 pm

8Kusd vs £100+ not including your valuable time and skill what would a start up brewery be able to afford.
Oh and I looked through the code on git hub its so simple and python is not my best.
My wife wanted me to get a hobby now I make beer. She says I'm always in my shed I KEEP TELLING HER IT WAS HER IDEA.

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