One of the quickest ways to kill a cartridge heater is to have heated section out of the bore and enjoying fresh air. One of two things will happen:
- The resistance coil will harden and become brittle and open.
- The heat generated will not find a heat sink and build up to the point that it degrades the MgO to serve as an effective dielectric.
The brochure or our website lists the standard cold terminal for each diameter. But there are a number of reasons why a heater might extend further from the bore:
- Length tolerance for long heaters
- An insertion limitation such as a mounting bracket or flange
- A mounting fitting or extraction collar
- The desire to extend the heater beyond the end of the bore.
There are several different ways to achieve a cold terminal end in a Watt-Flex® cartridge heater, some completely cold and some reduced in wattage so as to present not much more than capillary heat that moves down the sheath.
Call your Proheat Account Manager for any help in designing the perfect heater for your application.
Call your Proheat Account Manager for any help in designing the perfect heater for your application.
Proheat offers a variety of industrial heating products, including cartridge heaters, band heaters, strip heaters, tubular heaters, immersion heaters, and more. We are dedicated to providing excellence in distribution.