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Author: Robert Zarr

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1. Initial Measurement Results of the NIST 500 mm Guarded-Hot-Plate Apparatus Using Automated Computer Control
Published: 5/9/2013
Author: 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 w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908132

2. Metrological Traceability for Guarded-Hot-Plate Apparatus
Published: 5/9/2013
Author: Robert R Zarr
Abstract: An approach for establishing metrological traceability for measurement results from guarded-hot-plate apparatus consistent with policy at the National Institute of Standards and Technology (NIST) is presented. A brief example for initiating met-rolo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907903

3. Standard Reference Materials: SRM 1453, Expanded Polystyrene Board, for Thermal Conductivity from 281 K to 313 K
Series: Special Publication (NIST SP)
Report Number: 260-175
Published: 12/21/2012
Authors: Robert R Zarr, Adam L Pintar
Abstract: Thermal conductivity measurements at and near room temperature are presented as the basis for certified values of thermal conductivity of SRM 1453, Expanded Polystyrene Board. The measurements have been conducted in accordance with a randomized ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912689

4. High-Temperature Guarded-Hot-Plate and Pipe Measurements: 2nd Operators Workshop (March 19-20, 2012) Co-sponsored by ASTM Committee C16 on Thermal Insulation
Series: Technical Note (NIST TN)
Report Number: 1764
Published: 11/21/2012
Authors: Robert R Zarr, Thomas Whitaker, Frank Tyler
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911481

5. SRM 1450d, Fibrous-Glass Board, for Thermal Conductivity from 280 K to 340 K
Series: Special Publication (NIST SP)
Report Number: 260-173
Published: 8/1/2011
Authors: Robert R Zarr, Amanda C. Harris, John F Roller, Stefan D Leigh
Abstract: Thermal conductivity measurements at and near room temperature are presented as the basis for certified values of thermal conductivity for SRM 1450d, Fibrous Glass Board. The measurements have been conducted in accordance with a randomized full fact ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908780

6. Thermal Response Simulation for Tuning PID Controllers in a 1016 mm Guarded Hot Plate Apparatus
Published: 7/1/2011
Authors: Robert R Zarr, William C. Thomas
Abstract: A mathematical model has been developed and used to simulate the controlled thermal performance of a large guarded hot-plate apparatus. The control system consists primarily of three PID controllers that regulate the output voltage of three programma ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904986

7. Uncertainty Analysis of Thermal Transmission Properties Determined by ASTM C 177
Published: 3/1/2010
Author: Robert R Zarr
Abstract: An uncertainty analysis for steady-state thermal transmission properties determined by the National Institute of Standards and Technology (NIST) 1016 mm Guarded-Hot-Plate apparatus is presented for fibrous-glass blanket and expanded polystyrene board ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901766

8. Assessment of Uncertainties for the NIST 1016 mm Guarded-Hot-Plate Apparatus: Extended Analysis for Low-Density Fibrous-Glass Thermal Insulation
Series: Journal of Research (NIST JRES)
Published: 2/1/2010
Author: Robert R Zarr
Abstract: An assessment of uncertainties for the National Institute of Standards and Technology (NIST) 1016 mm Guarded-Hot-Plate apparatus is presented. The uncertainties are reported in a format consistent with current NIST policy on the expression of measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905162

9. Assessing the Measurement Uncertainty of Thermophysical Properties
Published: 9/2/2009
Author: Robert R Zarr
Abstract: A generalized approach for the expression of measurement uncertainty consistent with current international practice is presented. The approach is applicable to all kinds of quantitative measurements including measurements of thermophysical propertie ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902139

10. Evaluation and Selection of Candidate Thermal Insulation Materials for NIST SRM 1450d, Fibrous-Glass Board
Published: 9/2/2009
Authors: Robert R Zarr, Dennis D Leber
Abstract: The evaluation of candidate thermal insulation materials for National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 1450d Fibrous-Glass Board is presented. The paper focuses on a preliminary study to assess the techn ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902936



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