Products

Temperature Controls

Hi-Heat can provide heaters with thermostats, thermal fuses, thermocouples, and resistance temperature detectors (RTD).

There are two basic types of mechanical thermostats: Creep Action and Snap Action. They are based on a bimetal expansion-contraction principle and pre-set to a specific temperature. Applications include freeze protection, enclosure temperature and high limit protection.

Creep action units have a bimetal strip that curves with the temperature excursions to provide the mechanical action of make and break for the contacts. This provides a close differential but can cause radio frequency interference in enclosures with sensitive electronics.

The pre-set temperature setting ranges between 40°F and 300°F =/- 5°F. The max amperage of these units is 8 amps at 120 volts. These thermostats are often used as motor protectors or temperature protectors in appliances.

Snap action units are round in structure (approx. 5/8” dia.) due to the bimetal disc that provides the snap actions. The disc looks like a contact lens and snaps back and forth at a pre-set temperature to make and break contract points.

Due to the energy required to snap the disc, the temperature differential is 20° to 30°F. The max temperature is 500°F. The wide differential does not provide narrow band temperature control but also does not generate any radio frequency interference due to the positive make/break action.

These units are most-commonly used for freeze protection and enclosure control, with a setting of On at 40°F / Off at 60°F. An over-mold must cover the unit.

Thermal fuses open the circuit if the heater exceeds the selected fuse temperature. They are a one-time protection device that prevents heater runaway if a control device has frozen in the on position.

Temperature Controls

Hi-Heat can provide heaters with thermostats, thermal fuses, thermocouples, and resistance temperature detectors (RTD) as an integral part of the heater.

Design Variations

Heaters can be designed and fabricated in many types of configurations to fit the size and shape required in your application.

Bonding Methods

Factory Vulcanization, Silicone Rubber Adhesive (RTV), Pressure Sensitive Adhesive (PSA) – Acrylic, Pressure Sensitive Adhesive (PSA) – High Temperature Silicone

Marking and Private Labeling

Hi-Heat’s standard marking includes a permanently marked Hi-Heat’s name, logo, part number, date code, volts and watts. We also offer custom private labeling, imprinting the product with their logo and other required information.

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