Page 3
User Guide
Landcal P80P
Calibration Source
2 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 can be 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