User Guide
Landcal Blackbody Source
Type P1600B2
Page 3
Fig. 1 LANDCAL Blackbody Source Type P1600B2
301001
2 Description
The LANDCAL P1600B2 comprises a cylindrical, refractory closed end tube
(cavity) approximately 300mm (12.0in) long with an internal diameter of 50mm
(2.0in). The cavity is cast from silicon carbide and the closed end is angled at
120° to increase the emissivity value.
The cavity is placed horizontally in a furnace heated by 6 silicon carbide heating
elements running from end to end of the furnace. The temperature of the
elements is measured by a Platinum thermocouple and controlled using a digital
PID controller with negligible short term drift.
An optional standard Platinum thermocouple, with a traceable (such as UKAS)
certificate can be inserted into the cavity from the rear of the furnace and used
to determine the true temperature. A second certificated thermocouple can
be supplied and, when inserted into the cavity from the front, can be used to
determine the temperature gradients along the cavity.
