Thermometers. 81 Thermometers Thermometers must be: –In degrees Celsius ( o C) or –both in Celsius ( o C) and degrees Fahrenheit ( o F) Thermometers only.

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Presentation transcript:

Thermometers

81 Thermometers Thermometers must be: –In degrees Celsius ( o C) or –both in Celsius ( o C) and degrees Fahrenheit ( o F) Thermometers only in o F must be accurate to +2 o F. Thermometers dually scaled must be accurate to +1 o C. Examples of thermometers: –Instant-read, thermocouple/thermistor, infrared, and time- temperature indicator

Thermometers82 Thermometers

83 Checking Your Thermometer Check the accuracy of all food thermometers: –At least once a day –Every time it is dropped –After being exposed to extreme temperatures Methods to check the accuracy: –Boiling water method –Ice-point method If not correct, calibrate.

Thermometers84 Boiling Water Method

Thermometers85 Ice-Point Method

“Looking does not guarantee proper cooking.” Measure the temperatures of food during storage, cooking, and holding

Thermometers87 Measuring Food Temperatures Use an approved thermometer. Locate the sensing portion of the thermometer. Clean and sanitize the probe before use. Insert the sensing portion of the thermometer into the thickest part or into the center of the food.

Thermometers88 Cleaning and Sanitizing Thermometers The probe or stem of a thermometer must be cleaned and sanitized before it is used. If only measuring the temperature of ready-to- eat food, the probe or stem only needs to be cleaned between uses.