Short Wavelength Lamps These lamps are generally used in applications where a product is
to be heated or cured (These lamps may be operated in horizontal or vertical orientations) ? Heat treating metals ? Annealing metals ? Spot welding metals and plastics ? Localized softening plastic for bending or forming ? Curing silicone and other rubber extrusions ? Limitations ? Absorption of short wavelength is affected by product color.
Black and dark colors absorb well. ? Heating lighter colors may be more readily achieved with medium
wavelength lamps. ? Metals such as Teflon do not absorb short wavelength energy. ? Most of the energy will pass through and heat whatever is behind
the Teflon. Medium Wavelength Lamps ? These lamps are generally used in applications where a surface
needs to be dried. ? High speed drying water or solvent based ink. ? Removing water after coil coating ? Heating substances such as Teflon that do not absorb short
wavelength ? Heating lighter colored surfaces ? Limitations ? Medium wavelength does not penetrate as deeply into metals,
plastics or rubber as short wavelength. ? These lamps may only be operated in a horizontal orientation. Rapid Response The lamps (both short wave length and medium wavelength) have a
low mass tungston wire filament that heats immediately when voltage
is applied. This low thermal mass allows the heaters to reach the
operating temperature in 1 to 3 seconds when voltage is initially
applied and to respond with the same rapidity when voltage is varied. This ability
to change heat output almost instantaneously make them a superior
choice in applications where operating conditions such as line speed can
change rapidly and the heat must follow this change. Long Lamp Life Typical lamps will operate for 5000 hours at rated voltage. This
predicted life will be affected by the actual voltage applied. Over
voltage will significantly decrease the life and operating at less than rated
voltage will increase the life. All the lamps enclose the tungsten filament in a quartz envelope
that is transparent to the infrared energy. It must be kept free of
containments such as oil to prevent premature lamp failure. The quartz will not
absorb the infrared but the oil contaminate will and the lamp
envelope will heat in the area of contamination. Wiping the lamp down with a
clean cloth and alcohol will eliminate the contamination