Pitts, W.
, Braun, E.
, Peacock, R.
, Mitler, H.
, Johnsson, E.
, Reneke, P.
and Blevins, L.
(2003),
Temperature Uncertainties for Bare-Bead and Aspirated Thermocouple Measurements in Fire Environments, 14th Joint Panel Meeting, Tsukuba, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=861103
(Accessed October 10, 2025)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Temperature Uncertainties for Bare-Bead and Aspirated Thermocouple Measurements in Fire Environments
Published
Author(s)
, , , , , ,
Abstract
Temperature measurements have been made for natural-gas and heptane fires in a reduced-scale enclosure using a variety of bare-bead and aspirated thermocouples in order to characterize the uncertainties. The focus is the role of radiative heat transfer and the effects of finite time response on the measurements. The findings show that significant errors are possible for all thermocouples considered. Aspirated thermocouples reduce, but do not eliminate, such uncertainties. An alternate approach, use of several bare-bead thermocouples with extrapolation to zero diameter, is not easily implemented in the time-varying temperature environments characteristic of fires.Proceedings Title
14th Joint Panel Meeting
Conference Dates
May 28-June 3, 1998
Conference Location
Tsukuba
Conference Title
Thermal Measurments: The Foundation of Fire Standards, ASTM STP 1427
Pub Type
Conferences
Download Paper
Keywords
aspirated thermocouples, enclosure, fire tests, measurement uncertainties, temperature measurements, thermocouples
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact [email protected].
Created July 1, 2003, Updated February 19, 2017