Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k.
Thermometer calibration procedure laboratory.
Materials necessary to calibrate a thermometer for cold.
14 issue 2 thermometers are one of the most common types of equipment in a laboratory but it is important.
Meeting the criteria in this procedure demonstrates.
Taylor and henry v.
Record the results using actual values on the thermometer calibration log along with the date and initials of the person performing the calibration procedure.
Take readings from calibrated thermometer and thermometer to be calibrated at selected points and compare the readings.
5 2 10 standard thermometers shall be sent for re standardization based on the calibration certificate given by the approved laboratory.
Heat the beaker of sand with thermometers in an oven to desired range.
A similar calibration procedure can be used for thermometers intended to be used in cold processes and products.
Thermometer calibration procedure.
Thermometers that have been adjusted for 3 consecutive months will be replaced.
Procedure and analysis 12 1 vendor calibration a.
Nonadjustable thermometers will be removed from use until they have been professionally serviced.
Refer to attachment 1 for inventory of thermometers requiring vendor calibration.
Performance calibration and verification of laboratory testing equipment to ensure compliance with iso iec 17025 2017 and aoac requirements.
5 2 8 the thermometer shall have an identification number and standardization date labeled on it.
Before the calibration the infrared thermometer should be allowed enough time to reach the temperature of the laboratory typically 15 minutes.
Place certified calibrated thermometer and thermometer to be calibrated in a beaker of sand.
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.
Oppermann is out of print and the majority of content has been updated and published in the publications noted below.
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.
Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field.
This is an especially important consideration when bringing a thermometer in from the outside.
North carolina state laboratory of public health laboratory improvement unit june 2018 vol.
