REFRACTOMETERS :
digital ( or numerical ) type
precision 1 gramme
just a drop of must or wine on the saphyr window and you get the result in brix or in probable alcohol rate in 5 seconds
automatic temperature correction
OPTICAL DISOLVED OXYGEN SENSORS :
the LDO from Hach lange the most famous in wine industry , maintenance free , sensor membrane change not before 2 years ( 3 months with electrochemical type )
Connected on the interface HQ30D ( one canal for 4 available sensors , such as conductiviy ,ph )
interface HQ30D
ORDER a DISOLVED OXYGEN SENSORS
DENSITY METER :
densiter can be measured with different method :
one of the most precised is the vibrating U tube which measures oscillation frequency of a tube with U shape filled with liquid .
Frequency is directly dependant on liquid mass
example : DMA 35 from Anton Paar ( price around 1600 $ ) resolution 0.0001g/cm3 ( or 0.1g/liter )
DISOLVED CO2 SENSORS :
not yet in production ( 1 patent )
could be manufactured if strong demand ( more than 1000 parts )
price target : 600 euros for 20 mg/liter precision