Thermometer Calibration Procedure Nist

2 1 7 nist ir 5341 assessment of uncertainties of liquid in glass thermometer calibrations at the national.

Thermometer calibration procedure nist.

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. Any mention or image of commercial products within nist web pages is for information only. The metrological traceability established with the initial calibration. Calibration methods and procedures should be openly documented.

Bulb volume change ice bath ice point its 90 liquid in glass thermometer recalibration thermometer. Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k. 2 1 5 nbs monograph 174 thermometer calibration. The thermometer probe is connected to a cable so the display can be mounted away from your system for remote viewing.

There are a variety of commercial temperature monitoring devices available. Thermometer h 2610 12c 20 degrees c to 102 degrees c nist certified. 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. 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.

Temperature is a critical measurement for ensuring the safety and quality of many food products. 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. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field. 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.

Heat bath to desired range. Place certified calibrated thermometer and thermometer to be calibrated in a water bath. A procedure for the effective recalibration of liquid in glass thermometers author. Uncertainties of calibration should be clearly stated.

Nist does not monitor claims of traceability. Whether monitoring temperatures at receiving throughout production or final product storage and distribution thermometer calibration is. Thermometer h 2610 7c 2 degrees c to 300 degrees c nist certified. There are several factors relevant to evidence of traceability from the thermometer manufacturer vendor.

It does not imply recommendation or endorsement by nist.