High Capacity Bulb and Capillary Temperature Controllers
Polyimide (Kapton™) is a semitransparent, flexible, thin material, ideally suited
for the manufacture of etch foil heater mats. With its low thermal mass, superb electrical
insulating properties and excellent resistance to most chemicals, it allows high
power densities with fast and efficient thermal transfer. Being thin and lightweight
with a wide temperature range kapton (polyimide) flexible heaters have a distinct
advantage over other forms of heating elements. Where fast response, chemical resistance
and a low profile is required kapton (polyimide) flexible heaters offer the ideal
Silicone rubber and custom kapton (polyimide) heaters are extremely versatile and
operate efficiently in many environments.
Heating of Electronic Components- ATM's and Photocopiers
Heating of Aerospace Instrumentation-Satellites and Spacecraft
Semiconductor Wafer Processing
Autoclaves, Incubators and Sterilizers
Medical Imaging, Medical Diagnostic Instruments and Analyzers
Applications requiring a flexible shape or design
All silicone rubber and kapton (polyimide) heaters are built to order, but rush delivery
(3-5 days in most cases) is available. NPH can deliver custom silicone rubber and
kapton (polymide) flexible heaters within 10-15 Days. All NPH flexible heaters are
available with custom design modification. Etch foil and wire wound technology. Precise
even heating. Flexible and lightweight. Moisture and chemical resistant. Wide temperature
range -60 to +230°C UL and VDE approval available. Full design and manufacturing
Custom designs are welcome. Please contact us with your requirements.
Silicone rubber heaters consist of many layers of silicone rubber sheets that are
bonded together through heat and high pressure. A fiberglass grid (which is visible
on the surface) reinforces the silicone rubber sheets. It is possible to make the
surface of the heaters smooth (i.e. make the grid invisible) by covering the fiberglass
with a thin layer of silicone. A uniformly spiraled resistance wire web that covers
the entire surface of the heater is embedded within the layers of silicone rubber.
This web could be designed such that holes and cut-outs are incorporated on the heater.
When silicone rubber heaters are made with a pressure sensitive adhesive backing,
a thin layer of aluminum is added prior to the adhesive layer, in order to improve
heat transfer and maintain its uniformity. This construction makes silicone rubber
heaters an ideal solution to the requirements of many low and medium temperature
applications, which do not conform to the standard shapes, sizes and dimensions of
band, strip, cartridge, tubular and coil heaters.
When flexible silicone rubber heaters must be attached on cylindrical and other parts,
various attachment methods are used. Various techniques routinely used with leather
goods can be used on flexible surface heaters. These would include: Boot Hooks, Grommets,
Snap Fasteners, Boot Hooks and Lacing Cord, Velcro - Hooks and Loops, Boot Hooks
and Springs, D-Rings and Straps.
In addition these, other methods are also used for temporary and permanent installations:
Pressure Sensitive Adhesive Back (PSA)
High Temperature Aluminum or Fiberglass Adhesive Tape
Field Applied (RTV) Adhesive
Clamping or compression between two rigid materials
NPH silicone rubber enclosure heaters are designed for easy installation and safe
operation. These rectangular-shaped wire wound silicone rubber heaters are vulcanized
to an aluminum mounting plate with mounting holes. They provide superior protection
for enclosures of all types against condensation, humidity and freezing.
It is recommended that the enclosure heater be used with a thermostat either built-in
or mounted remotely to limit the maximum temperature reached and conserve energy.
Temperature Sensors and Switches for Silicone Rubber Heaters:
NPH silicone heaters can be supplied with factory fitted sensors and switches to
suit all types of instrumentation. Available from stock are PT100’s, J, K and T type
thermocouples, bi-metal thermostats and thermal fuses. We also fit customer specified
thermistors and other resistance temperature devices as well as extruded pockets
for customers to fit their own sensors. Separate mechanical or digital thermostats
can be supplied for process control.
Specialist Materials and Approvals:
As well as the large variety of stocked silicone materials available, NPH can manufacture
heaters in specialist silicones to customer requirement such as colour, thickness
and Low Smoke/Low Toxicity. We are certified to manufacture silicone heater mats
with UL, CSA or VDE approval, which simplifies full approval for the finished assembly.
Supply Cable and Connectors:
NPH standard termination is via single leads or multi-core silicone cables. These
can be terminated with connectors by major manufacturers such as Amp and Molex. Other
types of cable as well as spiral wrap and heatshrink sleevings are available on request.
Integral Foam Insulation:
To provide higher efficiency during heating, NPH flexible silicone heater mats can
be thermally insulated with a closed cell silicone foam insulation vulcanized to
one face. Many thicknesses are available from stock, as well as specialist types
such as flame retardant that can be supplied on request.
Uniform gas temperature in delivery lines is critical to eliminate condensation and
contamination of the wafer process. NPH introduces improved Insulated Gas Line Silicone
Rubber Heater designs to maximize heat profile uniformity and prevent unwanted thermal
gradients that lead to reduced yields and tool downtime.
Hazardous environments have special considerations in order to keep it safe such
auto-ignition points. No matter what needs to be heated, we have a solution that
rigorous criteria of a hazardous area.
Exclusive hazardous-area approval: Class I Division 2 Groups A*, B, C, and D Class
II Division 2 Groups F and G. Dual set-point NEMA 7 temperature controller connected
to a high temperature limit indicator light. Exceptional 8" (203mm) coverage area.
Superior durability and flexibility. Moisture and chemical resistant. Patented grounded
heating element meets NEC 427.23.
* Only for drum heater without NEMA 7 temperature controller. Contact factory for
Heating of containers in hazardous area projects. Safely heat , flammable liquids,
low-temperature ovens, process vats and dip tanks, storage tanks, hoppers, dry storage
& coal silos.
Exclusive hazardous-area approval :Class I Division 2 Groups A, B, C, and D
Class II Division 2 Groups F and G. Suitable for a large range of surfaces like tanks,
hoppers, conveyors, silos, etc. Exceptional durability, moisture and chemical resistant.
Easy-to-apply industrial strength pressure sensitive adhesive backing option. Patented
grounded heating element for your safety meets NEC 427.23
Designed to provide freeze protection, viscosity control, melting of solids and maintenance
of materials at elevated temperatures. Provide practical, efficient means of freeze
protection, viscosity control and maintenance of materials at elevated temperatures.
A variety of standard sizes are combined with availability of configure-to-order
designs to meet a variety of applications.
Useful for a wide range of applications. Adjustable thermostat: 50o to 425oF (10o
Maximum exposure temperature: 450oF (232oC). Silicone rubber extruded outer sheath
and Fiberglass knitted and braided construction. Moisture and chemical resistant
with a power density of 6.0 watts/in² (0.009 watts/mm²). Suitable for electrically
conductive surfaces. Available in 120V or 240V models. Six foot (2m) power cord supplied
with the 120VAC units. Standard two-prong plug (Nema1-15). Bare wire connection supplied
for the 240 VAC tapes.
Heating cable is also referred to as heating tape and heat trace cable amongst the
industry. Heating cable is used for a wide range of applications including pipe tracing,
freeze protection, viscosity control, temperature process maintenance, roof and gutter,
and much more. NPH also offers a true heating tape that is much more flexible and
provides a more rapid thermal response. Prevent freezing on a wide array of objects
like pipes, valves, tanks, vessels and pumps. Process maintenance and viscosity control.
Ideal for long runs on pipes and vessels. Prevent freezing in your critical areas
with our variety of heating products. Freeze protection heat tapes, cable and heat
cords are available for quick and easy installation on pies, valves and tanks.
Laboratory Heating Mantles offer uniform heat distribution for round-bottom flasks.
Whether the need is a self-standing mantle, a mantle to fit in a basket ring stand,
or a full coverage zippered mantle, NPH Heating Mantles provides the solution.
NPH also offers laboratory heating tapes that are very flexible and ideal for wrapping
around various types of laboratory apparatus.
Easy-to-install and remove. Moisture and chemical resistant. Uniform heat across
the surface of beaker. Fits Griffin and standard size beakers. Maximum exposure temperature:
232oC (450oF). Hook and loop closure allows for quick installation and removal.
Flexible heating tapes are also available for Laboratory and industrial applications
requiring temperatures up to 1100ºF. Our standard and heavy insulated heating tapes
be it manufactured of fiberglass (900ºF) or Samox (1100ºF) are suitable for use on
conductive or non-conductive surfaces be it metallic or non-metallic. Many of our
heat tapes can be found on glass beakers, tubing, pipes and valves.
These general purpose flexible heating tapes consist of extruded silicone rubber
and heating element, ½” to 3” wide, in lengths from 2 to 10 feet. They are moisture
and chemical resistant with a rugged and dependable percentage controller which provides
accurate control of the temperature. Standard flexible heating tapes are available
for either 120 or 240 volt operation, develop 72 watts per linear foot and can withstand
exposure temperatures up to 500*F.
In applications where a heater mat is required to fit small diameter pipe-work a
more precise fit can be obtained by using the preformed silicone rubber heater option.
NPH can form and vulcanize silicone heaters to fit full or partial circumference
of any pipe diameter. These heaters can be supplied with separate straps for fixing
or can be permanently installed using room temperature vulcanizing silicone adhesive
or self adhesive systems.
Custom design. Etch foil and wire wound technology. Precise even heating. Flexible
and lightweight. Moisture and chemical resistant. Wide temperature range -60 to +230°C
UL and VDE approval available. Full design and manufacturing service
Tote Tank Heaters, Intermediate Bulk Container (IBC) Heaters