Visible radiation measurement for temperature determination
Abstract
The theory of radiation according to the laws of Planck and Stefan-Boltzmann is treated, and the detection of radiation and the detection geometrics are discussed. A detector consisting of a camera, a diode, and an amplifier, was examined to determine geometrics, including lens openings, focal distance, and principal planes. Saturation and the error in adjustment were determined. The procedure of detector calibration by means of a tungsten ribbon lamp is described. Measurements with the equipment to check the calibration constant were carried out on a piece of iron with known temperature. There is fairly good agreement between the results of this pyrometer method and temperature measurements with a thermocouple.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- November 1985
- Bibcode:
- 1985STIN...8728877E
- Keywords:
-
- Light (Visible Radiation);
- Radiation Detectors;
- Radiation Pyrometers;
- Temperature Measurement;
- Thermal Radiation;
- Calibrating;
- Geometrical Optics;
- Plancks Constant;
- Stefan-Boltzmann Law;
- Thermocouples;
- Instrumentation and Photography