Channel Strip Heaters
Channel strip heaters are reliable flat heating cells, designed to provide efficient heat to flat surfaces and in space heating applications. The thick rectangular stainless steel housing of these heaters provides a rugged construction suitable for industrial applications.
The housing of a channel strip heater is 0.375” x 1.5” stainless steel rectangular tubing. Coiled Nickel-Chrome wire is placed inside special ceramic tiles. The terminals are secured with ceramic and mica insulators to the sheath. In order to improve their heat transferring capability and to make them vibration-resistant, channel strip heaters are filled with magnesium oxide powder that is compacted through vibration.
Channel strip heaters are made with or without slotted mounting tabs.
- HOT PLATES
- SPACE HEATING
- SEALING BARS
- LOAD BANK RESISTORS
- It is critical to have a good surface-to-surface contact between channel strip heaters and mounting surfaces. These surfaces should be clean, flat and smooth.
- Channel strip heaters expand when energized and thus tend to get detached from the surfaces they are mounted on. To prevent this, it is essential to allow room for expansion by tightening firmly the mounting screw on one end (usually terminal side) and leaving the other side slightly loose. When relatively long strip heaters are used, it is good practice to use clamps to hold strip heaters firmly attached to application surfaces.
- While tightening post terminals, a backup wrench should be used to hold the counter-nut to ensure tightness and prevent terminals from damage.
- Channel strip heaters (with or without fins) that operate at a potential difference of more than 300 V between their line voltage and the ground, should be isolated from the surface of an application by secondary isolating ceramic bushings. Bucan offers insulators that are adequate for dia. 1/4" screws. To be able to use these ceramic insulators, strip heaters should have 1/2" x 5/8" mounting slots (factory pre-punched upon request).