An Improved Noncatalytic Coating for Thermocouples

1 January 1992

journal article
research article
Published by Taylor & Francis in Combustion Science and Technology

Vol. 81 (1-3) , 141-145
https://doi.org/10.1080/00102209208951798

Abstract

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.

Keywords

This publication has 2 references indexed in Scilit:

Laser-induced fluorescence determination of temperatures in low pressure flames
Applied Optics, 1989
SiO₂Coated Thermocouples
Combustion Science and Technology, 1984