General of the self-regulating heating cable:

 The
self-regulating heating cable (self-regulating heating cable and auto
temperature control heating cable) is a new generation and the only
constant temperature electric band heater. The resistivity of the
heating element is of extremely high “PTC” (positive temperature
coefficient) and these elements are in parallel connection. The
characteristics are as follows: it can automatically restrict the
heating temperature, and can automatically adjust the output power with
the temperature of the heated body with no need of any other additional
equipment; it can be cut or connected in a certain length at free will
for use, and allows multiple overlapping with no high temperature hot
spots or worry about being burnt up. By right of these characteristics,
heating cables are provided with advantages including overheating
prevention, convenient usage and maintenance as well as energy saving.
They are applicable for temperature control, heat trace, insulation and
heating of pipes, equipment and containers, especially there is any
material easy to break down, deteriorate, crystallize or condense and
freeze. They have been widely used in industries including petroleum,
chemical industry, power, metallurgy, light industry, foods, freezing,
buildings, coal gas, production and processing of agricultural
byproducts as well as other departments.

The
heating cable is composed of nanometer conductive carbon particles, two
parallel buses and the insulation layer. All self-regulating heating
cables can be cut into sections in any length or connected via two-way
or three-way junction box because of this kind of parallel structure.

SSR
Self Regulating Heating Cables provide the most versatility in heat
trace designs and applications. Constructed of a semiconductive heater
matrix extruded between parallel bus wires, a self- regulating cable
adjusts its output to independently respond to ambient temperatures all
along its length.  As temperatures increase, the heater’s resistance
increases which lower the output wattage. Conversely, as the temperature
decreases, the resistance decreases and the cable produces more heat.
So it is no need thermostat in some applications.it will never overheat
or burnout even when wrapped by itself (overlapped).Also can be cut to
any length.The result —an energy efficient heating cable.

SSR
is ideally used for process temperature maintenance and frost
protection of large diameter  pipelines,tanks,valves, flanges.and other
industrial application where have high heat loss.  It is suitable for
hazardous area, also non-hazardous area and corrosive area with
fluoroplymer outer jacket.