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플레이트
써모메타
PLATE
THERMOMETER (PLT-01-ATX)
PLT-01-ATX
Plate thermometer
The PLT-01-ATX plate
thermometer is used in many kinds of "fire testing" for measuring the thermal
exposure of objects under test, and for controlling the fire temperature. It
complies with the requirements of EN 1363 part 1 "Fire Resistance Testing
General Requirements" and is built according to the recommendations of the
Swedish National Testing and Research Institute.
Figure 1.
PLT-01-ATX: socket for connection
(1), thermocouple (2), specially treated area (3), plate (4), thermocouple metal
sheethed cable (5), teflon extension cable (6), heat (7), ceramic insulation
(8)
In fire resistance tests, the specimens are
exposed to a heat flux that is caused both by radiation and convection. The
PLT-01-ATX has a flat and relatively large exposed area (4),and it is isolated on the
back (8). Compared to a normal thermocouple (TC) the plate thermometer's
sensitivity to convection and radiation more closely resembles that of a typical
specimen in a fire test. In addition a 15 mm diameter area (3) around the centre
is specially treated. This is done to achieve a directional (cosine) sensitivity
to radiation that is also representative of that of a typical
specimen.
Carefully designed, the plate thermometer
can act as a direct measurement of the heat load as experienced by a specimen.
In a typical fire resistance test several PLT-01-ATX's are placed alongside the
specimen surface.
By using plate thermometers, fire tests in
different ovens and at different institutes are harmonised.
SPECIFICATIONS
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Thermocouple type:
K
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Temperature range: to +1200
oC (sensor & sheathed TC
wire) to +260 oC (Teflon
wire)
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Typical lifetime (prEN 1363-1):
50 testing hours
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Surface emissivity: > 0.75 (aged during
production)
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Socket for connection: internal pipe thread R1/4''
BST
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Metal sheathed TC wire length: 2000 mm
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Teflon TC extension wire length: 1000 mm
OPTIONS
- Inconel connection tubes are not part of the
normal delivery. These can be ordered on request.
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