Wash with soap and warm water and dip in a sanitizing solution or wiped with an alcohol pad. Fill a large container with ice. How to calibrate an IR thermometer> We want to help you with the simpler calibration method, which is to use a Fluke 4180 Precision Infrared Calibrator in its standard configuration. Stir the mixture well. The ice bath method; The boiling water method; You can use either method you like, so long as the thermometer you are calibrating has that value in it’s range, and not all of them do. Calibration Methods. Additionally, after being knocked or dropped, calibration is required to make sure it is still reading accurately. Boiling-point method Ice point method. Submerge the sensing area of the thermometer stem or probe in the water for 30 sec 3. These methods would require a minimum of three thermometers … The reading on the thermometer should be 100 degrees Celsius or 212 degrees Fahrenheit. The boiling point method is mainly used by food handlers who work with extremely hot food, such as in candy making. Add clean tap water until the container is full. Add clean tap water until the container is full. Once you get your device for the first time, you need to calibrate it. For the ice slurry method, the reading should be zero degrees Celsius. Two methods to calibrate thermometers. There are a couple ways to calibrate your thermometer: (1) ice point method and (2) boiling point method. For example, a Kamado Joe dome thermometer doesn’t have markings for temps under 150f, ruling out the use of iced water to calibrate. Step 2 - Use the Calibrations Methods. The dry-block calibration method provides a better measurement because we’re working with instruments that have a known accuracy. Boiling-point method. With this non-contact method measurement uncertainty is on the order of 0.5 °C (0.9 °F), but it is much simpler. The reading should be 100 degrees Celsius. Put the thermometer stem or probe into the ice water. Make sure the sensing area is underwater and not touching the sides of the container. Stirred bath or furnace method: The option between stirred bath or furnace is used based on the temperature requirements. For the boiling water method, sit your food thermometer in boiling water. We’ll discuss how to calibrate your thermometer using the boiling point method. If you are using the boiling point of water to calibrate a thermometer, you must estimate the boiling point is based on your altitude. In general, for each 293 meter (960-foot) increase in altitude the boiling point changes by 1ºC (1.8ºF), however, it is the change in atmospheric pressure that causes the change in the boiling point. Stir the mixture well. Video transcript: This video demonstrates two methods for calibrating a digital thermometer: first, with ice and boiling … Remember that thermometers come into contact with food so be sure to clean and sanitize your thermometer after each use. This is to ensure that it will give accurate readings at all times. Make sure the sensing area is under water. Bring water to a boil 2. Put the thermometer stem or probe into the ice water. To use the boiling point method, simply place the thermometer probe or stem into the container with boiling water and wait for at least 30-seconds or until the indicator on the thermometer stops moving. But you should occasionally check the accuracy using either the ice water or boiling water method of calibration. First of all, you have to know the right time that you need to calibrate your thermometer. Wait 30 seconds or until the reading stays steady. Hold the calibration but and rotate the thermometer head until it reads 212 degrees f. 1. 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