Landcal Blackbody Source
Type P80P
Operating Instructions
Page 2
2.0
DESCRIPTION
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.
Fig. 1 Landcal Blackbody Source Type P80P
CA970256
