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Initial Measurement Results of the NIST 500 mm Guarded-Hot-Plate Apparatus Using Automated Computer Control

Published

Author(s)

Robert R. Zarr

Abstract

The initial thermal conductivity measurements from a guarded hot plate apparatus using multiple line-heat sources are presented for specimens of high-density molded fibrous-glass board. Measurements at ambient air pressures are in good agreement with predicted values assigned for SRM 1450c, Fibrous Glass Board, over a moderate temperature range of 280 K to 340 K. Thermal conductivity measurements at 310 K for chamber pressures from 0.004 kPa (0.03 torr) to 100.4 kPa (750 torr) are also presented. Temperature and pressure control strategies for the apparatus under these operating conditions are discussed.
Proceedings Title
Thermal Conductivity 31/Thermal Expansion 19
Conference Dates
June 26-30, 2011
Conference Location
Saguenay
Conference Title
31st International Thermal Conductivity Conference & 19th International Thermal Expansion Symposium

Keywords

gas pressure, guarded-hot-plate, incremental, PID, temperature control, thermal conductivity

Citation

Zarr, R. (2013), Initial Measurement Results of the NIST 500 mm Guarded-Hot-Plate Apparatus Using Automated Computer Control, Thermal Conductivity 31/Thermal Expansion 19, Saguenay, -1 (Accessed May 27, 2023)
Created May 9, 2013, Updated February 19, 2017