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Old 03-19-2013, 02:44 PM   #21
gtl
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Feb 2013
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Check out this site
stm-instrument.com

 
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Old 03-19-2013, 05:16 PM   #22
ajdelange
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Less accurate by a factor of 0.0015/0.000005 = 300 but less expensive by a factor of 22000/500= 44. Hmmm.

 
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Old 03-20-2013, 01:59 PM   #23
gtl
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Feb 2013
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Really 0.000005, for home brewing, I've used the anton par densitometers with that accuracy its designed for the lab and its not easy to use. Why not compare the anton par hand held... 0.0015/0.001 = 1.5 but 2500/500= 5 times more expensive...lets compare apples to apples.

 
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Old 03-20-2013, 08:33 PM   #24
ajdelange
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As it was my little joke (which apparently fell flat) I get to pick the model.

If you are having trouble with a DMA 5000 it is probably technique as they are simpler to use than a hydrometer (except for the cleaning). Unstable readings are usually caused by outgassing of bubbles (guess the vibration promotes that). Anton Paar recommends filling with a syringe and keeping pressure on it while the measurement is being made. That works.

 
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Old 04-24-2013, 10:03 AM   #25
mito
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What about having a glass hydrometer touching/pressing a pressure sensor then translate its output in something readable/processable?

An initial calibration(reset button or something) would be easy to do but i dont know how ambient pressure would affect the readings.

what are your thoughts on this
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Old 04-29-2013, 09:41 PM   #26
nilo
 
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perhaps a digital refractometer coupled directly to a fermenter?
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