ASTM Type J or K internal thermo-couples are available on lead Type B
with loose braid. The
industrial thermocouple
junction, which is welded inside the
leadcap or spot-welded to heatersheath, provides a signal for measur-
ing relative heater temperature. >
W A T L O W
Barrel Heaters
MI Band
Variations
Lead Wire Heaters rated at less than250V Å (ac) use this wire.When ordering, specify Å (ac) use UL >
® approved leadinsulation for operations to 250°C(480°F) as standard. Lead insulationUL 450ËšC(850°F) wire.
Thermocouple >
® rated for operation to 450°C (840°F) is available for high
temperature applications where the
leads are shrouded or enclosed with
the heater. These leads are available
in any of the Type B with loose braid
as well as Types E, F and H leadconfigurations. All heaters rated at
more than 250V expandable. On 25 mm (1 in.) wide MI Bandheaters, post terminals will be
located 90 degrees from the expansion joint. Leads may be
located anywhere along the
circumference except near the gapand at the expansion joint. Two setsof leads are required. To order,
specify >
Injection molding Barrel Heaters Spot welded toheater sheath Expandable Heaters With and Without Leads MI
Band heaters 38mm (1.5 in.) wide or greater will have postterminals located next to the
expansion joint. Leads may be
located anywhere along thecircumference except near the gap
and at the expansion joint. Two sets
of leads are required. Expandable heaters are two-pieceunits with a common top metal that
allows the heater to expand open to
the full diameter of the barrel. On
expandable bands, each half will be
one half of the total wattage. Plus,on both expandable and two-piecebands, each half will be rated at full
operating voltage, unless otherwise
specified. >
38 mm (1.5in.) wideand greater Type SLE and length. Type SLE >
11 mm(0.4375 in.) Strain Relief Two fiberglass lead wires exit asingle tightly woven metal braid at
right angle on the expandable
construction verses two sets of
leads. Minimum diametercapabilities is 100 mm (4 in.).Minimum width capabilities is
38 mm (1.5 in.). To order, specify >
UL ® is a registered trademark ofUnderwriter's Laboratories, Inc. 23 >