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User Guide
1
Introduction
This User Guide gives the necessary information required to operate a LAND
R4 Thermometer.
1.1 About the Thermometer
The LAND R4 Thermometer is an accurate, non-contact thermometer
designed for use in conjunction with a LAND LMG signal processor containing
an R4 I/O card (card type = 6) from which it derives the nominal +/-20V d.c.
power supply required for its operation.
The optical system focuses infrared energy from the target surface onto a
detector. The thermometer outputs two individual d.c. signals which are
analogues of the surface temperature. The actual target surface temperature
is then calculated by the LMG signal processor, from the ratio of these two
signals.
Ratio thermometers are principally used for applications where radiation
reaching the detection system is reduced by atmospheric obscuration in the
line of sight, or where the field of view is only partially filled by the target
surface.
1.2 Unpacking the Thermometer
It is important to fully check all equipment with which you have been
supplied.
The packaging should contain the following items:
•
R4 Thermometer User Guide.
•
A binder for documentation.
•
R4 Thermometer fitted with protective lens cap.
It is recommended that the protective lens cap is kept attached until
thermometer installation is fully complete.
1.3 Nomenclature
The thermometer detail label is on the rear face of the thermometer above
the eyepiece.
Make a note of your thermometers instrument type and Serial Number in the
space provided below. This information is required to configure a Landmark
processor to work with your thermometer.
Instrument type:
Serial Number:
R4 Thermometer
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