Teri Lee on tue 18 sep 07
Hi,=20
=20
I tried to send this question to Clayart but I don't think it went
through so here it is again...
=20
I used two hydrometers to measure the density of the same batch of
terra sig. Both hydrometers use a Baume Scale for
heavy liquids, 60 degrees, and each hydrometer has a scale along its
side that runs in increments of ten, like, 0-10-20-30, etc. to 70. One
of the hydrometers also
has a scale that goes from 1.000-1.1000-1.2000, etc. to 2.000, but since
the second hydrometer didn't have that scale, I just took readings from
the first (0-70) scale.
Well! I got a reading of "2" from one hydrometer and a reading of "8"
from the other. I took readings three times because I couldn't believe
I could be that off-the-mark, but I got the same numbers for the two
hydrometers. Both hydrometers come from reputable companies (Van Waters
&
Rogers and H-B Instrument Company).=20
=20
One hydrometer is about 2 years old; the other one is at least 15 years
old.
What's going on? Is it normal to get such different readings among
hydrometers? Do hydrometers lose their mojo over time? Do I need to get
a third hydrometer to break the tie?
=20
Teri Lee
=20
=20
Ted Neal on wed 19 sep 07
Teri
Put them both in water....they should read 1.000 or 0 depending on the scale used.
(If I am correctly interpreting what you have said....) if not then something is up...
They could possibly be configured for measuring the density of some other solution..
perhaps? I know the one that I use has the 1.000 scale inside....
Ted
Ted Neal
Ball State University
On Tue, 18 Sep 2007 09:42:12 -0700, Teri Lee wrote:
>Hi,
>
>
>
>I tried to send this question to Clayart but I don't think it went
>through so here it is again...
>
>
>
> I used two hydrometers to measure the density of the same batch of
>terra sig. Both hydrometers use a Baume Scale for
>heavy liquids, 60 degrees, and each hydrometer has a scale along its
>side that runs in increments of ten, like, 0-10-20-30, etc. to 70. One
>of the hydrometers also
>has a scale that goes from 1.000-1.1000-1.2000, etc. to 2.000, but since
>the second hydrometer didn't have that scale, I just took readings from
>the first (0-70) scale.
>
> Well! I got a reading of "2" from one hydrometer and a reading of "8"
>from the other. I took readings three times because I couldn't believe
>I could be that off-the-mark, but I got the same numbers for the two
>hydrometers. Both hydrometers come from reputable companies (Van Waters
>&
>Rogers and H-B Instrument Company).
>
>
>
>One hydrometer is about 2 years old; the other one is at least 15 years
>old.
>
> What's going on? Is it normal to get such different readings among
>hydrometers? Do hydrometers lose their mojo over time? Do I need to get
>a third hydrometer to break the tie?
>
>
>
> Teri Lee
>
>
>
>
>
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