Temperature

Parameter Selection

Application Importance of Temperature in Winemaking

During fermentation the temperature is monitored for multiple reasons. From a biological standpoint the yeast become sluggish at very cold temperatures and can be killed at higher temperatures. From sensory standpoint, high temperatures in the fermentation process can lead to the production of hydrogen sulfide (rotten egg smell) by certain strains of yeast and can produce a “cooked� flavor in the finished product.

Large producers of wine will use a cooling system to remove the heat produced by the fermentation process. These cooling systems include a jacketed fermentation tanks that are cooled by glycol or ammonia.

There is much debate about the ideal fermentation temperatures. According to Wyeast, a yeast manufacturer, white wines are fermented at colder temperatures (45-60 °F/7-15 °C) and red wines are fermented at warmer temperatures (70-85 °F/20-30 °C). It is found that at colder temperature preserve fruity aromatic compounds that are characteristic in white wines while higher temperatures provide for better tannin and color extraction, which are good for red wines.

Temperature is also important in the conditioning and storage of wine prior to bottling. Red wines are conditioned at 68°F/20°C while white wines at 60°F/15°C.

Meters

Portable Thermistor Thermometers

Portable thermistor thermometers offer a high accuracy temperature measurement within a -50.0 to 150.0 °C range. Thermistor thermometers include version that can be calibrated in a ice bath, that have a backlit LCD, and with CAL Check to determine if internal electronics are working correctly.


  • High accuracy – ± 0.4 °C/0.8 °F excluding probe error
  • Versions that allow probe calibration in an ice bath
  • Calibration keys to verify meter operation
  • Cal Check for internal electronics drift verification
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Portable Thermistor Thermometers

Portable thermistor thermometers offer a high accuracy temperature measurement within a -50.0 to 150.0 oC range. Thermistor thermometers include version that can be calibrated in a ice bath, that have a backlit LCD, and with CAL Check to determine if internal electronics are working correctly.


  • High accuracy – ± 0.4 °C/0.8 °F excluding probe error
  • Versions that allow probe calibration in an ice bath
  • Calibration keys to verify meter operation
  • Cal Check for internal electronics drift verification
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Portable Thermocouple Thermometers

Portable thermocouple thermometers offer a wider measurement range and faster response time that thermistor based thermometers. Typically, a K-Type thermocouple can measure up to 1350 °C/2462 °F. Thermocouple thermometers include version that can be calibrated in a ice bath, that have a backlit LCD, and with CAL Check to determine if internal electronics are working correctly.

  • Two probe input for monitoring chiller efficiency
  • Versions that allow probe calibration in an ice bath
  • Cal Check for internal electronics drift verification
  • Wide selection of probes

The edge family of meters include both multi-parameter versions and dedicated versions that only measure pH.

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Pocket Thermometers

Pocket thermometers offer a high accuracy temperature measurement in a convenient handheld form at an economical price. Pocket thermometers incorporate the Hanna CAL Check feature to determine if internal electronics are working correctly and include versions with an integrated probe and ones that the probe separate from the meter.


  • High accuracy - Up to + 0.2 °C/0.5 °F
  • Cal Check for internal electronics drift verification
  • Weighted probe for use in vats and tanks
Shop Now >

Pocket Thermometers

Pocket thermometers offer a high accuracy temperature measurement in a convenient handheld form at an economical price. Pocket thermometers incorporate the Hanna CAL Check feature to determine if internal electronics are working correctly and include versions with an integrated probe and ones that the probe separate from the meter.


  • High accuracy - Up to + 0.2 °C/0.5 °F
  • Cal Check for internal electronics drift verification
  • Weighted probe for use in vats and tanks
Shop Now >

Probes & Accessories

Probes & Accessories

Portable thermistor thermometers are supplied with a general purpose probe while with thermocouple thermometers the probe is ordered separately. Hanna Instruments offers a wide selection of probes and accessories for our portable thermometers.


  • Choice of probes including length and type
  • Calibration keys for thermistor thermometers

Shop Thermistor Probes & Accessories >

Shop Thermocouple Probes & Accessories >

Probes & Accessories

Portable thermistor thermometers are supplied with a general purpose probe while with thermocouple thermometers the probe is ordered separately. Hanna Instruments offers a wide selection of probes and accessories for our portable thermometers.


  • Choice of probes including length and type
  • Calibration keys for thermistor thermometers

Shop Thermistor Probes & Accessories >

Shop Thermocouple Probes & Accessories >

Resources

Check out our Media Library and Knowledge Base pages specifically for wine and wine related products.