Hydrometer question

[trapper_dave]

I have a glass hydrometer that I bought used from an old beekeeper in town. He told me that he paid $40 for it 20? years ago - so I assume that it is a decent one. Anyways, my question is that it is calibrated for 68 deg F. However I quite often want to check honey at different temperatures. Say for example - in the double boiler at 120 deg. Is there some way to figure out a correction factor for other temperatures? Are these things accurate that far away from the design temp?

Thanks,
David

[Legion©]

There is a way to work it out, I had a chart that came with the hydrometer I use when distilling which told you how to allow for the change in temperature... buggered if I know where it is now though.

Something like this one here http://home.iitk.ac.in/~ashishg/hydrometer.htm (http://home.iitk.ac.in/%7Eashishg/hydrometer.htm)

No too sure what the hydrometer you've got measures (SG or Brix), but there is another chart here which you can use to convert between the two http://www.honeyflowfarm.com/conversionchart.htm

Hope that helps you

[Fuzzy]

According to the instructions with mine for homebrewing, at 120f you will need to add
aproximately .01 to the reading. Be advised that it is not a linear translation between
60F and 120F. It is some kind of exponential.

Fuzzy