scope:

1.1 This guide describes methods for temperature measurement of thermionic emitters.

Note 1-There are several comprehensive works (1, 2, 3) on general temperature measurements.

1.2 The methods of temperature measurement appear in the following order:

Method Sections Optical and Infrared Techniques Optical Pyrometry 2 Spectral Emittance 3 Infrared Photography 4 Thermocouple Techniques 5 to 8 Direct Current Methods 9 to 12

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.