Temperature Calibration Techniques for TMF Testing

Infrared Scanning Using Radiance vs. Temperature Calibration Techniques to Determine Actual Temperature of an Electronic Component

ISTFA 1998: Conference Proceedings from the 24th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa1998p0435 ◽

1998 ◽

Author(s):

David Dickey

Keyword(s):

Test Sample ◽

Significant Error ◽

Temperature Measurements ◽

Sample Temperature ◽

Temperature Calibration ◽

Actual Temperature ◽

Area Of Interest ◽

Infrared Scanning ◽

Two Temperatures ◽

Calibration Techniques

Abstract It is necessary to understand the limitations of an automated InfraRed (IR) system when using it for temperature measurements. These systems correct for emissivity of the test sample by heating the unpowered sample and taking radiance measurements at two temperatures. For the specific sample that was analyzed, the temperature of the area of interest of the powered sample was higher than the two temperatures used for emissivity correction. This resulted in a significant error in the temperature calculated by the system. The use of direct radiance measurements provided an accurate measurement of the sample temperature.

Download Full-text

Standard Gain Horns for Solar Calibration

Publications of the Astronomical Society of Australia ◽

10.1017/s1323358000010572 ◽

1967 ◽

Vol 1 (2) ◽

pp. 62-64 ◽

Cited By ~ 1

Author(s):

R. Wielebinski

Keyword(s):

Low Noise ◽

Solar Flux ◽

Absolute Calibration ◽

Temperature Calibration ◽

Absolute Value ◽

Recent Advances ◽

Microwave Components ◽

Pyramidal Horn ◽

The Absolute ◽

Calibration Techniques

The accuracy of the absolute value of solar flux depends on the temperature calibration techniques and the knowledge of the gain of the aerial used for the measurements. Recent advances in low-noise receivers, microwave components, and amplifier stability have reduced considerably the errors due to temperature calibration techniques. At present the knowledge of the gain of the aerial used for calibrations (usually a pyramidal horn) presents the largest source of doubt of an absolute calibration. Investigations of this problem suggest that a ‘standard gain horn’ should be employed at all observatories in absolute solar calibrations.

Download Full-text

Calibration Techniques in Ultrahigh-Pressure Apparatus

Journal of Engineering for Industry ◽

10.1115/1.3664464 ◽

1961 ◽

Vol 83 (2) ◽

pp. 207-213 ◽

Cited By ~ 6

Author(s):

F. P. Bundy

Keyword(s):

Temperature Sensing ◽

Ultrahigh Pressure ◽

Temperature Calibration ◽

Absolute Accuracy ◽

Effect Of Pressure ◽

Pressure Calibration ◽

Theoretical Predictions ◽

Calibration Techniques

Pressure and temperature calibration of ultrahigh-pressure apparatus is described. Pressure calibration up to 30 kilobars has been established accurately. Above this pressures are not known with sufficient absolute accuracy to compare results reliably with theoretical predictions of behavior of matter. The effect of pressure on temperature-sensing devices, like thermocouples, have been measured over temperature intervals of 100 deg C up to pressures of the order of 100 kilobars. The effect on some thermocouples is appreciable.

Download Full-text