User Guide
Landcal Blackbody Source
Type R1200P
Page 11
7 Calibration of Radiation Thermometers
An angle bracket is mounted onto the front plate of the furnace. A convenient
method of holding a LAND fixed system thermometer is to use one of the
optional holders which attach directly to the angle bracket.
Holder for System 3 Thermometers
Part Nº 135.110
Holder for Fibroptic Thermometers
Part Nº 135.109
Holder for System 4 Thermometers
Part Nº 135.190
7.1 Preparation
The furnace control setting will usually be the normal working temperature of
the thermometer to be tested.
The target temperature is that indicated by the measuring thermocouple
displayed on the ‘target’ indicator.
7.2 Thermometer calibration
When the source is stable at the chosen control temperature, place the
thermometer under test in the holder and measure the thermometer output on
the measuring apparatus. Note the target temperature immediately.
7.3 Calibration procedures
When calibrating radiation thermometers it is important to follow documented
step-by-step procedures to ensure that specified calibration conditions are met
irrespective of operator. If difficulty is experienced in writing procedures, LAND
will be pleased to offer guidance on the calibration of LAND products.
