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MULTICELL Heaters . Demanding Operations This cross sectional drawing of a MULTICELL heater shows six individual metal-sheathed cells. MULTICELL heaters with up to six individual cells are available. Watlow’s radiant MULTICELL heater design can include up to six individual metal-sheathed cells compressed into a larger outer sheath. This double-sheath feature allows efficient heat dissipation, maximum protection against coil oxidation and long life under the most demanding conditions. TYPICAL CARTRIDGE HEATER HIGH-TEMP TUBULAR HEATER TYPICAL TUBULAR HEATER MULTICELL Heaters: the High Temperature...

Unique MULTICELL Features for Demanding Applications • Multiple, independently controllable zones allow precise process temperature uniformity not possible with any other single-sheathed heater. • Glass forming ovens • HIPP • Hazardous waste treatment systems • Heat treating processes Potting cup to seal electrical termination • Hot forging dies • Hot gas generation High temperature flexible leads Wide range of terminations available • Molten metal heating • Soil remediation • Polysilicon ingots Whether your need is for multiple or single zone control, Watlow’s radiant MULTICELL heaters are an...

Single Zone MULTICELL Elements* SINGLE ZONE MULTICELL ELEMENTS* Three ZoneZONE MULTICELL ELEMENTS* THREE MULTICELL Elements* Platen Or Oven Temperature In Air (°C ) A = 6 cell, 0.935" diameter, 240VÅ(ac), 3-phase B = 6 cell, 0.685" diameter, 240VÅ(ac), 3-phase C = 6 cell, 0.935" diameter, 480VÅ(ac), 3-phase Note: Shaded area is standard. Non-shaded area, consult factory. Note: Shaded area is standard. Non-shaded area, consult factory. * Other designs and voltages with higher temperature capabilities are A = 6 cell, 0.935" diameter, 240VÅ(ac), 3-phase available. Consultdiameter, 240VÅ(ac), 3-phase...

Nichrome® (or equivalent) resistance wire High grade MgO insulation High temperature alloy for outer sheath Zone 1 Separate, independently Zone 2 controllable heated zones Zone 3 Sheath Temperature and Watt Densities Typical Loose Fit Sizes Radiant or Natural Convection Temperature—°F X 100 Standard Platen Minimum M ULTICELL Diameter Hole Size Radius Bends 0.685 in. 3/4 or 7/8 in. 1.5 in. 0.935 in. 1, 11/4 in. or larger 2.5 in. Note: See Heater catalog for bending options. Wave Length (U) in Microns at Max. Energy X 104 in Angestrom Units Determining MULTICELL Process Watt Density and Sheath...

Application: Watlow’s radiant MULTICELL heaters reduce costly downtime and provide long heater life for glass forming and tempering ovens. • Dramatically reduced downtime • Longer heater life • Easy heater and thermocouple replacement for hassle-free maintenance The customer saw these immediate benefits: Solution: Durable and easy to remove and install MULTICELL heaters from Watlow replaced the coil and ceramic heaters, resulting in minimal downtime and nearly hassle-free maintenance and replacement. Additionally, an internal thermowell with a removable and easily replaced thermocouple was used...

Case History for Manufacturing Polysilicon Ingots Application: Watlow’s MULTICELL heaters provide accurate and controlled heating in polycrystalline silicon CVD reactors. Problem: Temperature consistency and uniformity within the CVD reactor is critical in the manufacturing process of polysilicon ingots. is then removed from the reactor. The reactor is then sealed and the filaments are connected to desired voltage while the reaction gasses are introduced. The MULTICELL heater bundle is the preferred heat source due to its straightness, rigidity, excellent high temperature and zoning capabilities....

Find out more about Watlow and how we can provide thermal solutions for your company: E-mail: [email protected] Website: www.watlow.com Watlow Products and Technical Support Delivered Worldwide North American Technical Support & Sales Offices Asian Technical Support & Sales Offices European Technical Support & Sales Offices Latin American Technical Support & Sales Office About Watlow Watlow designs and manufactures industrial heaters, temperature sensors, controllers and supporting software as well as assemblies - all of the components of a thermal system. The company partners with its customers...