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Application Guide

Electric Heaters

Strip Heaters

Product Overview

Watlow’s mica and 375 strip heaters are the versatile solution for a number ofapplications. They can be bolted or clamped to a solid surface for freeze and moisture protection, food warming and other applications or utilized as a non- contact radiant heater. The 375 finned strip heaters are commonly used for air heating, drying ovens and space heaters. Performance Capabilities •Typical maximum watt densities from 7.8 W/cm Continued
2 (50 W/in
2 ) to 15.5 W/cm
2 (100 W/in
2 )•Maximum operating temperatures to 760°C (1400°F) Applications • Dies and molds• Tank and platen heating • Thermoforming • Packaging and sealing equipment • Ovens • Food warming equipment • Vulcanizing presses • Duct, space and air heaters • Incubators • Autoclaves • Freeze and moisture protection Thick Film Heaters Watlow layers thick film resistor and dielectric materials on quartz, stainless steeland ceramic substrates to produce high performance industrial heaters. Thethick film heaters provide very fast temperature response and uniformity on alow-profile heater. Thick film heaters are ideal for applications where space islimited, where conventional heaters can’t be used, when heat output needs vary across the surface, or in ultra-clean or aggressive chemical applications.430 stainless steel (open air), 430 stainlesssteel (immersion), aluminum nitride, quartz (open air) and quartz (clamp-on) sheath materials are available. •Typical maximum watt densities from 3 W/cm Performance Capabilities
2 (20 W/in
2 ) to 27 W/cm
2 (175 W/in
2 )•Maximum operating temperatures to 550°C (1022°F) • Ultra pure aggressive chemicals• Large panel processing • Analytical equipment • Foodservice equipment • Packaging sealing equipment • Life sciences sterilizers and GC/massspectroscopy• Semiconductor wafer process equipment • Plastics hot runners nozzles andmanifolds Applications 12