Page 5
User Guide
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2.3
Alignment And Scan Direction
The Land LSP Linescanning Thermometer incorporates an integral laser unit (model dependent) to aid alignment
during installation. Details on the use of this feature are described in section 4.0. Where this laser alignment
feature is not available, precise alignment may be accomplished through the use of a mobile 'hot source', to
identify the plane and extents of the scan line. Alternatively, the intended target product may be used if this is
available during the installation process.
To interpret the scan profile produced by the scanner, it is necessary to determine the scan direction of the unit.
This is indicated by an embossed arrowhead cast into the top of the scanner casing. Once positioned, the design
of the scanner mountings ensure that the unit is replaced in the correct orientation, should the scanner be
removed from the application for servicing etc.
2.4
Installation Precautions
Vibration:
It is highly recommended that the LSP Linescanning Thermometer is positioned in a location where vibration is
kept to a minimum.
Infrared Reflections:
All practical targets have some reflectivity within the infrared waveband. This reflectivity increases as the target
emissivity (see section 5.0) reduces. Therefore the scanner sees some radiant heat energy from reflections of
surrounding objects as well as from the target source. This energy is not usually sufficient to have an effect on
the measurement, but care should be taken to ensure that objects of similar or higher temperature to the target
are not placed where reflected energy may enter the scanner.
Scan
Direction
Arrowhead
Scan
Direction
Product Pass
Direction
Product
LSP
Scanner
Fig. 2 - Scan Direction
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