Description; Lntended Use; Rtd Temperature Sensing; Uniform Heating - Nordson 3100V Series Customer Product Manual

10
RTD-Style Hot Melt Hose
2.
Description
Nordson RTD-style hoses provide superior temperature control, reliability,
and improved safety. Thermalaccuracy is improved through the use of
area-sensing rather than point-sensing devices. Area sensing provides a
truer indication of hose temperature by measuring temperature over
a
larger
area. Unlike point sensing, which can produce
a
false reading
when affected by
hot or
cold spots, area sensing averages temperatures
to provide
a reliable reading over
a
wide range of operating conditions.
Nordson RTD- (resistance temperature detector)style automatic gun and
handgun hoses may be used only
to
transport hot melt adhesives and
other thermoplastic materials to
an
appropriate dispensing point.
RTD-style hoses are precision wound and calibrated
prior to assembly,
ensuring that resistance and controlvalues match and eliminating the
need for temperature control calibration. The RTD precision combined
with proportional temperature controls eliminate under- and
over-temperature conditions. These features offer more consistent
application rates and improved pattern control in high-volume production
situations.
A
low
watt-density heating element reduces
hot
spot potential. The
element
is spirally
wound around the core for increased flexibility. Closely
spaced wraps ensure efficient and uniform
heat
transfer to
the hot melt
material for fast startup and consistent flow rates. Three layers of
high-temperature felt insulation increase thermal efficiency, decrease
heat loss, and reduce operating costs.
lntended Use
RT D
Tem
pe ratu
re
Sen
s
i
n
g
Uniform Heating
Manual
45-21
108232E
lssued
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@
2000 Nordson Corporation
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