Thermometer Calibration Procedure

Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field.

Thermometer calibration procedure. Here s a useful video on the calibration process. Materials necessary to calibrate a thermometer for cold. 9 0 sample handling and storage. 5 1 2 take a 1000 ml beaker filled with about 850 ml of silicon oil.

Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k. For this particular type you have to. 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. Finally thermometers require regular calibration daily or weekly when they are used frequently.

Add a little clean water until the glass is full and stir. Not applicable 10 0 procedure and analysis. Record the results using actual values on the thermometer calibration log along with the date and initials of the person performing the calibration procedure. This is an especially important consideration when bringing a thermometer in from the outside.

Traceable thermometers are certified annually by a contractor outside of the opp microbiology laboratory. Use water for 0 0 c and silicon oil for the temperature above 50 c. Thermometers that have been adjusted for 3 consecutive months will be replaced. The stirrer shall be dipped in the beaker.

Fill a glass with crushed ice. A similar calibration procedure can be used for thermometers intended to be used in cold processes and products. The first is the freezing point method. First there are those that have a nut or a screw for calibration.

Different digital thermometers have different methods for the purpose of calibration. 5 1 calibration procedure 5 1 1 the thermometer for calibration shall be mercury in glass type. Digital thermometer calibration procedure. 5 1 3 put the beaker in an oil bath fitted with a stirrer.

Oppermann is out of print and the majority of content has been updated and published in the publications noted below. Taylor and henry v. Step 2 test your thermometer. An ice water bath and a boiling water bath.

Use these two methods to get your thermometer back on the right track. Learn how to test a thermometer s accuracy and how to calibrate a thermometer using two methods. 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.