Electrical Interference; Emissivity Of Target Object - RayTek RAYCMLTJM Operating Instructions Manual

Basics

4.5 Electrical Interference

To minimize electrical or electromagnetic interference, follow these
precautions:
Mount the sensor as far away as possible from possible sources of
interference such as motorized equipment producing large step load
changes.
Ensure a fully insulated installation of the sensor (Avoid ground
loops!).
Make sure the shield wire in the sensor cable is earth grounded at one
location.

4.6 Emissivity of Target Object

Determine the emissivity of the target object as described in appendix 10.1
Determination of
falsified by interfering infrared radiation from background objects (such as
heating systems, flames, fireclay bricks, etc. close beside or behind the target
object). This type of problem can occur when measuring reflecting surfaces
and very thin materials such as plastic films and glass.
This measuring error when measuring objects with low emissivity can be
reduced to a minimum if particular care is taken during installation, and the
sensing head is shielded from these reflecting radiation sources.
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Emissivity. If emissivity is low, measured results could be
Rev. B 06/2011
CM