Barrel Heaters - Hasmak.com.tr

W A T L O W<strong>Barrel</strong> <strong>Heaters</strong>MI BandVariationsLead Wire<strong>Heaters</strong> rated at less than250VÅ(ac) use UL ® approved leadinsulation for operations to 250°C(480°F) as standard. Lead insulationUL ® rated for operation to 450°C(840°F) is available for hightemperature applications where theleads are shrouded or enclosed withthe heater. These leads are availablein any of the Type B with loose braidas well as Types E, F and H leadconfigurations. All heaters rated atmore than 250VÅ(ac) use this wire.When ordering, specify 450˚C(850°F) wire.ThermocoupleASTM Type J or K internal thermocouplesare available on lead Type Bwith loose braid. The thermocouplejunction, which is welded inside thelead cap or spot-welded to heatersheath, provides a signal for measuringrelative heater temperature.Spot welded toheater sheathInjection Molding<strong>Barrel</strong> <strong>Heaters</strong>Expandable <strong>Heaters</strong> With and Without Leads38 mm (1.5 in.) wideand greaterExpandable heaters are two-pieceunits with a <strong>com</strong>mon top metal thatallows the heater to expand open tothe full diameter of the barrel. Onexpandable bands, each half will beone half of the total wattage. Plus,on both expandable and two-piecebands, each half will be rated at fulloperating voltage, unless otherwisespecified.MI Band heaters 38 mm (1.5 in.)wide or greater will have postterminals located next to theexpansion joint. Leads may belocated anywhere along thecircumference except near the gapand at the expansion joint. Two setsof leads are required.On 25 mm (1 in.) wide MI Bandheaters, post terminals will belocated 90 degrees from theexpansion joint. Leads may belocated anywhere along thecircumference except near the gapand at the expansion joint. Two setsof leads are required. To order,specify expandable.11 mm(0.4375 in.)Strain ReliefType SLETwo fiberglass lead wires exit asingle tightly woven metal braid atright angle on the expandableconstruction verses two sets ofleads. Minimum diametercapabilities is 100 mm (4 in.).Minimum width capabilities is38 mm (1.5 in.). To order, specifyType SLE and length.UL ® is a registered trademark ofUnderwriter's Laboratories, Inc.23