The LANDCAL blackbody source type P80P comprises a cylindrical closed end tube (cavity) approximately 160mm/6.3in long with an internal diameter of 50mm (2.0in).
The cavity is manufactured from Aluminium which is blackened and the closed end is angled at 120° to increase the emissivity value.
The cavity is heated or cooled using Peltier elements. The temperature is controlled by a platinum resistance thermometer connected to a 3-term digital controller having a ±0.1°C or ±0.1°F resolution.
An optional standard platinum resistance thermometer possessing a traceable (UKAS - United Kingdom Accreditation Service) Certificate is inserted into the cavity from the front of the source and used to determine the true (radiance) temperature.
This item includes the carrying case.