Temperature

Parameter Selection

Application Importance of Temperature in Brewing

At it’s core, all beer is made from the same 4 ingredients: water, yeast, hops and grain. Some brewers will choose to modify this basic recipe to include spices or fruits, as seen in many Belgian beers. Regardless of additives, all beers can be classified as either an ale or a lager based on which yeast is used: ale yeast or lager yeast. Temperature plays an important role in yeast fermentation and can be a deciding factor as to which style is chosen.

To begin, milled grains, such as barley and oats, are added to a large vessel called the mash tun. Hot water is added, activating malt enzymes from the grains which then convert the starches into fermentable sugars. The next step, called lautering, separates the sugary liquid known as wort from the spent grains. In order to end enzymatic activity, the temperature is brought to over 200° Fahrenheit, a process known as mashing out. The wort and some water is sent through the mash, removing any final sugars. Brewers can use temperature and time to manipulate which enzymes are active to bring out the desired sugars and influence taste. In general, lower mash temps increase fermentability while higher temps decrease it.

The wort goes through a series of boils while hops and other additives are added, and once cooled down, the yeast is pitched and thus begins the process of fermentation. Over the course of the next 7 to 10 days, the yeast will convert the simple sugars in the hopped wort into alcohol and carbon dioxide.

During fermentation, sugar from the grains are converted to ethanol and carbon dioxide via yeast. Ale yeast ferments best at higher temperatures, typically 65-70°F (18-21°C). At these warmer temperatures, fermentation speeds up, taking less time and also producing esters and phenols that add to the flavor. Lager yeasts ferment best at lower temperatures around 50-55°F (10-13°C). These yeasts tend to ferment slower, producing fewer phenols and creating a flavor more influenced by the hops and grains.

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 versions that can be calibrated in an 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 °C range. Thermistor thermometers include versions that can be calibrated in an 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 than thermistor-based thermometers. Typically, a K-Type thermocouple can measure up to 1350 °C/2462 °F. Thermocouple thermometers include versions 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
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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 where the probe separates 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
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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 where the probe separates 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

Temperature 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 >

Temperature 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 >