Temperature Calibration & Control

ACT offers heat pipe-based temperature calibration and control products that operate at temperatures of -60°C to 1,100°C. These products use various working fluids, including ammonia, methanol, water, cesium, potassium and sodium, to cover the wide temperature range. These products have been used in temperature calibration and materials processing applications. ACT specializes in the design and manufacture of temperature calibration and control products including:

For critically controlled environments, count on ACT’s expertise and quality. We invite you to read more about our temperature calibration and control products below, or contact a member of our team to discuss your specific project requirements.

Isothermal Furnace Liner

An Isothermal Furnace Liner from ACT is a unique type of heat pipe that is tested and trusted to distribute heat within a furnace to wherever it is required, providing a stable, uniform temperature zone for a variety of applications. When a single uniform temperature zone is required, the IFL can provide this zone with a single heater and controller. Temperature adjustment is a simple one step process and frequent profile measurements are not necessary.

Contact us to speak with an ACT representative about your specific application, or click on the link below for more information about our Isothermal Furnace Liners.

Typical Application:

  • Temperature calibration
  • Black body radiators
  • Isothermal processing of materials
  • Vapor deposition
  • Diffusion
  • Annealing
  • Chemical reaction
  • Vapor pressure measurement

Benefits Include:

  • Flat temperature profile (isothermal)
  • Simplified temperature control
  • Rapid temperature recovery
  • Increased productivity
  • Energy savings
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Ultra High Temperature IFLS

ultra high temperature isothermal furnace linerFor applications where an Isothermal Furnace Liner is being used for extended periods in the 1000 to 1100°C range, ACT has developed the Ultra High Temperature IFL. These IFLs utilize a Haynes 230 envelope material for its excellent high temperature creep strength. In applications where conventional Inconel/sodium IFLs lasted only a couple thousand hours, ACT’s Haynes 230/sodium IFLS will operate for significantly longer.

Contact us to speak with an ACT representative about your specific application, or click on the link below for more information about our Isothermal Furnace Liners.

Benefits Include:

  • Flat temperature profile (Isothermal)
  • Extended Life above 1000°C
  • Simplified temperature control
  • Rapid temperature recovery
  • Increased productivity
  • Energy savings
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Heat Pipe Blackbody Cavity

ACT’s Heat Pipe Blackbody Cavity (HPBC) is an annular heat pipe with a hemispherical or conical end cap. The heat pipe achieves temperature uniformity by continuous evaporation and condensation of a working fluid, sealed within the annular space. Since the working fluid is in two-phase equilibrium with its own vapor, all wetted surfaces are isothermal.

Whether you need a cavity or an entire assembly, an off-the-shelf product or a custom-designed solution, ACT can provide the heat pipe solution you require. Contact us to speak with an ACT representative about your specific application, or click on the link below for more information about our blackbody cavities.

Typical Application:

  • Non-contact temperature calibration

Benefits Include:

  • Uniform surface temperature
  • Low operating costs
  • Passive, vibration-free operation
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Pressure Controlled Heat Pipe Furnace

If your specifications call for a pressure controlled heat pipe furnace, ACT has the expertise to develop a solution. Contact us to discuss your specific requirements.

Typical Application:

  • Isothermal processing of materials
  • Thermophysical properties characterization
  • Temperature calibration

Benefits Include:

  • Isothermal temperature profile to thousandths of a degree
  • Simplified temperature control
  • Rapid temperature recovery
  • Increased productivity
  • Energy savings
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IFL Systems for Materials Processing

ACT has designed and manufactured precision temperature IFL systems for a number of critical applications. Many more applications such as annealing, sintering, crystal growing, brazing and controlled diffusion can also benefit from this technology. Contact us to discuss your specific requirements, or click on the link below to read more.

Typical Application:

  • Specialty glass manufacturing
  • Elevated temperature materials characterization
  • Chemical or refining process temperature control
  • Biomass reaction chambers
  • Semiconductor annealing and processing
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