User Guide
Landcal Blackbody Source
Type R1500T
Page 3
2 Description
The LANDCAL blackbody source type R1500T is a transportable, self contained
unit designed for use on any reasonably at surface.
The cylindrical target with conical end is manufactured from silicon carbide and
is designed to give a high emissivity cavity. The target is heated by radiant
energy from six silicon carbide rod heaters. The source is tted with a three
term temperature controller which allows the source to heat up to 1500°C in
about 30 minutes and holds it stable at temperatures to within ±1°C (2°F).
If the source is used as a transfer source (i.e. calibration by comparison method
adopted) a set of optional standard radiation thermometers will be required.
The selection of standards will depend upon customer requirements, e.g.
working temperature range, type of radiation thermometers to be calibrated etc.
Ideally the standards should be of a similar type to those being tested as strict
comparisons can then be made. The standards listed below are recommended.
System 4
Type M1 Calibrated Temperature Range: 600 to 1500°C
Type M2 Calibrated Temperature Range: 500 to 1100°C
Portable
Cyclops 100 Calibrated Temperature Range: 550 to 1500°C
One standard should be returned each year to LAND for re-certication or at any
time when a discrepancy is detected.
An optical bench assembly is also offered as an accessory. This is used as a
convenient means of mounting and lining up the jacket used to house in turn
the standard and test thermometers. It ensures that both items use the same
sighting path. Vernier adjustments allow precise positioning.
Fig. 1 Landcal black body calibration source type R1500T
CA970248/a
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