Thermometer Calibration Procedure

Here s a useful video on the calibration process.

Thermometer calibration procedure.

5 1 calibration procedure 5 1 1 the thermometer for calibration shall be mercury in glass type. Oppermann is out of print and the majority of content has been updated and published in the publications noted below. 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. 9 0 sample handling and storage.

Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k. The thermometers will vary but the basic concept is the same. Use these two methods to get your thermometer back on the right track. Finally thermometers require regular calibration daily or weekly when they are used frequently.

Before the calibration the infrared thermometer should be allowed enough time to reach the temperature of the laboratory typically 15 minutes. Record the results using actual values on the thermometer calibration log along with the date and initials of the person performing the calibration procedure. The first is the freezing point method. Not applicable 10 0 procedure and analysis.

Fill a glass with crushed ice. Traceable thermometers are certified annually by a contractor outside of the opp microbiology laboratory. Thermometers that have been adjusted for 3 consecutive months will be replaced. An ice water bath and a boiling water bath.

This is an especially important consideration when bringing a thermometer in from the outside. Different digital thermometers have different methods for the purpose of calibration. 5 1 2 take a 1000 ml beaker filled with about 850 ml of silicon oil. The stirrer shall be dipped in the beaker.

Thermometers that cannot be easily calibrated through direct immersion in either. First there are those that have a nut or a screw for calibration. Add a little clean water until the glass is full and stir. 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.

5 1 3 put the beaker in an oil bath fitted with a stirrer. Learn how to test a thermometer s accuracy and how to calibrate a thermometer using two methods. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field. Use water for 0 0 c and silicon oil for the temperature above 50 c.

Taylor and henry v. Step 2 test your thermometer. For this particular type you have to.