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The NIST Industrial Thermometer Calibration Laboratory (ITCL) is responsible for calibrating several different types of industrial thermometers, including:
Calibrations in this laboratory are made by comparison with an ITS-90 calibrated standard platinum resistance thermometer in stirred liquid baths in the temperature range –196 ºC to 550 ºC. Additionally, the fixed-point measurement at the ice-melting point (0 °C) is available.
Every LIG thermometer submitted must be uniquely identified by a serial number and must pass a preliminary examination for fineness and uniformity of graduation; for cleanliness of the liquid and the capillary bore; for freedom from moisture, gas bubbles, and cracks in the glass; for adequacy or omission of gas filling where needed; for insufficient annealing; and, for misnumbered graduations.
How to Arrange a Calibration
For contact information, shipping address, or cost of calibration, see Laboratory and Industrial-Grade Thermometers.
Calibration Measurement Uncertainties
LIG type: Organic, Total Immersion