Gemini® Twin Bore IR Heaters

The twin bore quartz tubing has a back coating for directing the energy of the element. A 24-karat Gold Back Coating is available for targeted infrared applications. White Ceramic Reflective Back Coating is suitable for extreme temperature requirements.

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Explore Gemini Twin Bore IR Heaters Specifications

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Element Wavelengths

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Rapid Response

Design Features

Industry standard twin bore quartz tube formats with 95% heat transmittance
24-karat Gold Back Coating for targeted infrared applications
White Ceramic Reflective Back Coating for extreme temperature requirements
High power densities: 42/51/63.5 w/in (16/20/25 w/cm)
Fast heat-up rates — Less than one minute to reach steady state conditions
Very long operating life — Over 10,000 hours of highly efficient and economical continuous operation
Three industry standard sizes in lengths up to 118 in. (3000mm)

Construction Styles

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Clear Tubing without Coating

Back Coating: None
Maximum Coil Temperature: 2012°F (1100°C)
Feature: 360° Heat Radiation

Typical Applications:

PVC Panel Coating Cure
Curing Coating on Rubber Seals
Powder Coating Industry
Wood Processing Industry
Culinary Arts Industry

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Clear Tubing with White Ceramic Coating

Back Coating:White Proprietary Formula Reflective Back Coating
Maximum Coil Temperature:2012°F (1100°C)
Feature: 75% Heat Reflection toward working surface

Typical Applications:

Stress Relieving of Metal Components
Drying Foils
Paper and Textile Industries

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Clear Tubing with Gold Back Coating

Back Coating: 24-Karat Gold Back Coating
Maximum Coil Temperature: 1472°F (800°C)
Feature: 95% Heat Reflection toward working surface

Typical Applications:

Glass Processing Industry
Paper and Textile Industries
Plastics Industry

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Type CRA Linear Housings

These compact assemblies have one 33 × 15 mm twin bore Gemini quartz heater mounted in front of an aluminized steel reflector at a power density of 63.5 w/linear inch.

Design Features

Rapid heat-up/cooldown and low residual heat retention
Compact lightweight extruded anodized housing
High efficiency aluminized steel reflector for harsh environments and high temperature applications
Adaptable to all Gemini twin bore sizes

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Panel Arrays

Custom panel arrays are available. Tempco will design and build to your specifications. Consult us with your requirements.

Mounting Styles

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Heater Clamp

Optional 90° Lead Orientation, Shown with Optional End Mounting Clamp

Electrical Terminations

Lead Wire

Insulated lead wire, 3/8" stripped ends standard, oriented straight out ends or at 90º to heater axis

Maximum Lead Wire Temperature: 842°F (450°C)
Voltage: 600V
Optional styles of high temperature insulated lead wire and un-insulated ring or spade terminals are available to suit your application.
Bare stranded heater leads up to 9" long may be ordered with optional ceramic bead insulators.
Longer lengths are available as lead wire options only. When ordering, specify lead orientation, style, length, and terminals.