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Dissolved Oxygen Meter for Winemaking

Hanna Instruments: HI 9143W 

Dissolved oxygen (DO) is a term commonly used for the measurement

 of the amount of free molecular oxygen (O2) dissolved in a unit

volume of a solution usually expressed in milligrams per liter (mg/l),

parts per million (ppm) or percent saturation.

Why measure for Dissolved Oxygen in wine?

 

There are several stages where it is important to measure for Dissolved Oxygen:

  1. Test for the level of oxygen during racking and tank movements.  Whether its reduced or alternatively oxidized, the taste of wine can be dramatically altered by oxygen.
  2. Test for oxygen pickup during pad, DE and cross flow filtrations.  DO monitoring insures consistent process control and operation of equipment.
  3. Monitor micro ox treatment during maturation process.  Plotting the dissolved oxygen present during treatment aids in timely and effective micro ox implementations.
  4. Test the tank for the amount of oxygen after processing and before bottling.  The concentration of molecular oxygen should be measured in the wine before bottling and should be less than 0.5 mg/l.  If the concentration of dissolved oxygen is greater than 0.5 mg/l, it can generally be lowered by sparaging with nitrogen gas (see Zoecklein, et. al., 1995).
  5. Test oxygen in bottled wine.  During bottling, oxygen must be monitored regularly to insure minimal impact on wine quality during final filtration and filler/corker operations.

Dissolved Oxygen Meter for WinemakingHI 9143W Dissolved Oxygen Meter can measure DO in bottled wine as well as in storage tanks.  This meter automatically compensates for effects such as temperature, altitude, humidity and salinity.  These conditions can all impact the accuracy of DO readings and must be accounted for.  The meter also features a special probe designed for wine bottle testing.  All meters come with a two year warranty from Hanna Instruments.

 

 

 

 

 

 

Specifications HI 9143W HI 9142W
Range O2: 0.00-45.00mg/l 0.0 to 19.9 mg/l
  Sat: 0-300%, 0.0-50.0C  
Resolution O2: 0.01 mg/l; 0.1% Sat 0.1 mg/l
  0.1 C  
Accuracy (@20C/68F) O2 or Sat: 1.5% FS; 0.5C 1.5% FS
Calibration Automatic in air @ 100% Manual: 1 or 2 pts (zero & slope)
Temp. Compensation Automatic , 0-50C Automatic , 0-30C
Altitude Compensation 0-1900mm; 100m resolution  ---
Salinity Compensation 0 to 40 g/l, 1 g/l resolution  ---
Probe HI 76408 wine spot check probe with 3.3ft cable included  
Battery type   (4) 1.5V AA, or 12VDC  (4) 1.5V AA
Battery Life 200 hours continuous 500 hours continuous
Environment 0-50C; 100% max RH 0-50C; 100% max RH
Dimensions/ Weight 7.7 x 3.1 x 2.4" / 1.1# 7.7 x 3.1 x 2.4" / 1.1#
Included extras: carrying case, membranes carrying case, membranes
  electrolyte refilling solution electrolyte refilling solution
Recommended Accessories  
HI 7040M Zero oxygen solution  

 

 

                   

 

                 

     

 

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MBH Engineering Systems 2008
Last modified: 29-Oct-2008