A low cost, portable instrument was developed with which emittance can be measured by comparison to a standard. A reflector collects infrared radiation from a heated sample onto a low mass, black detector and the temperature rise of the black detector is measured with a thermocouple and meter. Graphical examples are presented for determination of emittance from measurements made on a sample at any known temperature.
NASA STI/Recon Technical Report N
- Pub Date:
- June 1977
- Portable Equipment;
- Infrared Radiation;
- Low Cost;
- Instrumentation and Photography