Thermometer Calibration Procedure

Different digital thermometers have different methods for the purpose of calibration.

Thermometer calibration procedure.

Oppermann is out of print and the majority of content has been updated and published in the publications noted below. Thermometers that cannot be easily calibrated through direct immersion in either. Here s a useful video on the calibration process. This is an especially important consideration when bringing a thermometer in from the outside.

Use water for 0 0 c and silicon oil for the temperature above 50 c. An ice water bath and a boiling water bath. 10 1 annual thermometer calibration reports for nist traceable thermometers sections 7 1 7 2 and 7 3 are stored in the thermometers calibration certificates. Record the results using actual values on the thermometer calibration log along with the date and initials of the person performing the calibration procedure.

For this particular type you have to. Learn how to test a thermometer s accuracy and how to calibrate a thermometer using two methods. Finally thermometers require regular calibration daily or weekly when they are used frequently. A similar calibration procedure can be used for thermometers intended to be used in cold processes and products.

Materials necessary to calibrate a thermometer for cold. 5 1 3 put the beaker in an oil bath fitted with a stirrer. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field. Step 2 test your thermometer.

Use these two methods to get your thermometer back on the right track. 5 1 calibration procedure 5 1 1 the thermometer for calibration shall be mercury in glass type. Fill a glass with crushed ice. The thermometers will vary but the basic concept is the same.

9 0 sample handling and storage. The stirrer shall be dipped in the beaker. Thermometer calibration for use in cold process and products ice water method an easy way to calibrate your thermometer is to put it in ice water and adjusting it to read. Taylor and henry v.

Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k. The first is the freezing point method. Traceable thermometers are certified annually by a contractor outside of the opp microbiology laboratory. Add a little clean water until the glass is full and stir.

5 1 2 take a 1000 ml beaker filled with about 850 ml of silicon oil. Thermometers that have been adjusted for 3 consecutive months will be replaced. First there are those that have a nut or a screw for calibration.