Thermometer Calibration Procedure Laboratory

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 laboratory.

Before the calibration the infrared thermometer should be allowed enough time to reach the temperature of the laboratory typically 15 minutes. Procedure and analysis 12 1 vendor calibration a. Take readings from calibrated thermometer and thermometer to be calibrated at selected points and compare the readings. North carolina state laboratory of public health laboratory improvement unit june 2018 vol.

10 5 any difference in temperature readings between the nist traceable thermometer and the laboratory thermometer is recorded on the point check calibration of laboratory thermometers record form see 16 0. 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. Nonadjustable thermometers will be removed from use until they have been professionally serviced. This is an especially important consideration when bringing a thermometer in from the outside.

A similar calibration procedure can be used for thermometers intended to be used in cold processes and products. Meeting the criteria in this procedure demonstrates. Thermometers in the instrument being monitored until the de ionized water or ethanol reaches the temperature of interest. Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k.

Record the results using actual values on the thermometer calibration log along with the date and initials of the person performing the calibration procedure. 5 2 9 all thermometers shall be standardized once a year and calibration record maintained annexure ii. Thermometers that have been adjusted for 3 consecutive months will be replaced. 5 2 8 the thermometer shall have an identification number and standardization date labeled on it.

5 2 10 standard thermometers shall be sent for re standardization based on the calibration certificate given by the approved laboratory. Place certified calibrated thermometer and thermometer to be calibrated in a beaker of sand. Materials necessary to calibrate a thermometer for cold. Oppermann is out of print and the majority of content has been updated and published in the publications noted below.

Performance calibration and verification of laboratory testing equipment to ensure compliance with iso iec 17025 2017 and aoac requirements. Taylor and henry v. Heat the beaker of sand with thermometers in an oven to desired range. 14 issue 2 thermometers are one of the most common types of equipment in a laboratory but it is important.