An Improved Noncatalytic Coating for Thermocouples

We have developed an improved coating for Pt/Pt-13% Rh thermocouples using a commercially available high-temperature adhesive. This aluminum oxide/potassium silicate coating is non-toxic, easy to apply and more stable than the standard thermocouple coatings. Temperature profiles obtained using the c...

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Bibliographic Details
Published in:Combustion science and technology 1992-01, Vol.81 (1-3), p.141-145
Main Authors: BURTON, KATHERINE A., LADOUCEUR, H. D., FLEMING, J. W.
Format: Article
Language:English
Subjects:
Applied sciences
Combustion of gaseous fuels
Combustion. Flame
Energy
Energy. Thermal use of fuels
Exact sciences and technology
low pressure flame
temperature measurement
Theoretical studies. Data and constants. Metering
Thermocouple coating
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Summary:We have developed an improved coating for Pt/Pt-13% Rh thermocouples using a commercially available high-temperature adhesive. This aluminum oxide/potassium silicate coating is non-toxic, easy to apply and more stable than the standard thermocouple coatings. Temperature profiles obtained using the coated thermocouple, corrected for radiation, and OH rotational temperatures obtained using Laser-Induced Fluorescence (LIF) are in excellent agreement, demonstrating that the coating removes the catalytic effects usually observed with uncoated thermocouples.
ISSN:0010-2202
1563-521X
DOI:10.1080/00102209208951798