Measurement Standards

Reference

Documents

Best Measurement  Capability

Range

Reference thermocouples type S; Multimeter Datron 1281

NIST Technical note 1265; NIST Monograph 175

0.4°C

0.5°C

0-600°C

600 -

1100°C

Type S and type R thermocouples

Standard mercury in glass thermometer

1) OIML guide to practical temperature measurements

2) NPL Techniques of temperature measurement

0.02 - 0.1°C

-30 - 250°C

Thermometers

Standard Ribbon-Filament Lamp

1) OIML R-18; OIML guide to practical temperature measurements;

2) NPL Techniques of temperature measurement

2.6 – 4.9 °C

800-1600°C

Optical pyrometers (Visual disappearing filament pyrometers)