Thermometer Calibration Procedure Nist

Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k.

Thermometer calibration procedure nist. 2 1 5 nbs monograph 174 thermometer calibration. Temperature is a critical measurement for ensuring the safety and quality of many food products. The metrological traceability established with the initial calibration. A model for state calibration laboratories 6 2 1 6 nist special publication 819 a procedure for the effective recalibration of liquid in glass thermometers j a.

Bulb volume change ice bath ice point its 90 liquid in glass thermometer recalibration thermometer. There are several factors relevant to evidence of traceability from the thermometer manufacturer vendor. There are a variety of commercial temperature monitoring devices available. Any mention or image of commercial products within nist web pages is for information only.

Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field. The thermometer probe is connected to a cable so the display can be mounted away from your system for remote viewing. Whether monitoring temperatures at receiving throughout production or final product storage and distribution thermometer calibration is. Nist does not monitor claims of traceability.

Uncertainties of calibration should be clearly stated. Thermometer h 2610 7c 2 degrees c to 300 degrees c nist certified. Obtain the most accurate readings possible with these thermometers that include a calibration certificate traceable to nist that states they ve passed a test to fall within 0 5 f accuracy. Place certified calibrated thermometer and thermometer to be calibrated in a water bath.

Thermometer h 2610 12c 20 degrees c to 102 degrees c nist certified. A procedure for the effective recalibration of liquid in glass thermometers author. If a certain type of thermometer displays more than occasional verification failures you may need to change either the procedure for handling the thermometer or the type of thermometer you use. Calibration methods and procedures should be openly documented.

Procedures and examples are given for visually inspecting a thermometer using an ice point for a single point recalibration and determining uncertainties for thermometers with a single point recalibration. Taylor and henry v. 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 notebook. 10 2 once a year all of the thermometers falling under section 7 4 of this sop are checked at operating temperatures against one of the nist traceable.

Heat bath to desired range.