Turbotech A91030159, Руководство по эксплуатации

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①
Not recommended for use in measuring shiny or
polished metal surfaces ( stainless steel, aluminum,
etc.).See Emissivity
②
The unit cannot measure through transparent surfaces
such as glass. It will measure the surface temperature
of the glass instead.
③
Steam, dust, smoke, etc., Can prevent accurate
measurement by obstructing the unit’s optics.

Emissivity
Emissivity is a term used to describe the
energy-emitting characteristics of materials.
Most (90% of typical applications) organic materials
and painted or oxidized surfaces have an emissivity of
0.95 (pre-set in the unit). Inaccurate readings will result
from measuring shiny or polished metal surfaces. To
compensate, cove the surface to be measured with
masking tape or flat black paint. Allow time for the tape
to reach the same temperature as the
materialunderneath it. Measure the temperature of the
tape or painted surface.