- #1
Larsoo
- 7
- 0
Hi, I brew beer and part of the process is measuring the specific gravity of the fermenting liquid. This is done visually using a hydrometer. Digital hydrometers are available and very expensive. I'm trying to come up with a way to measure the liquid specific gravity electronically. Typical gravity readings are in the range 1.008 to 1.080, the lower number being an indication that fermentation has completed and the higher number being the SG or starting Gravity.
I need to understand how upward force of a floating device relates to gravity.
My idea is that using the transducer from one of those high precision scales(heres one for 12stg that weighs from 0.001 to 10 grams- http://www.ebay.ie/itm/0-001g-10g-M..._Measurement_Equipment_ET&hash=item5d3acdcbaf), I could have a floating 'device' pushing up against the transducer and I could use the measured force to determine the gravity?
Does this make sense or are there any obvious flaws?
Obviously the device would need calibration and I would need to source the transducer. Also I would intend that the floating ball/device drive a rod upwards that applies pressure to the transducer from which I take my reading. Can anyone tell me what sort of readings I would get on such a transducer? Would it be sensitive enough for my purposes?
Thanks
L
I need to understand how upward force of a floating device relates to gravity.
My idea is that using the transducer from one of those high precision scales(heres one for 12stg that weighs from 0.001 to 10 grams- http://www.ebay.ie/itm/0-001g-10g-M..._Measurement_Equipment_ET&hash=item5d3acdcbaf), I could have a floating 'device' pushing up against the transducer and I could use the measured force to determine the gravity?
Does this make sense or are there any obvious flaws?
Obviously the device would need calibration and I would need to source the transducer. Also I would intend that the floating ball/device drive a rod upwards that applies pressure to the transducer from which I take my reading. Can anyone tell me what sort of readings I would get on such a transducer? Would it be sensitive enough for my purposes?
Thanks
L