Chromalox Big Red Book

Circulation

Circulation Heater Systems ASME & Custom Engineered Units

Features Kilowatt Selections — Custom units can produce the required kilowatt ratings with ele ment watt densities carefully selected for the specific media.

Mounting Lugs or Mounting Saddles — Spe cial mounting lugs or mounting configurations are available. Mounting saddles are provided with slotted mounting holes to allow for expansion. Flanges, Fittings, Nozzles and Nozzle Orien tation — Special nozzles, nozzle flanges and nozzle orientation can be designed to meet virtually any customer requirement. Distributed Wattage Elements — Help control vessel wall temperatures on high temperature gas circulation heaters. Control Panels — Integral or remote mounted control panels with electronic controls and solid state (SCR) or contactor power con trollers can be provided using virtually any combination of control devices. Consult the Controls Section for details. Ordering Information — Selection and design of a custom or ASME circulation heater system requires critical engineering judge ment. Chromalox representatives can help you determine the correct specifications for your application. To properly design your entire system you should clearly define the following: The following forms PE306 or PE307 can be used to help specify the correct circulation heater system for your application. For further assistance in specifying and de tailing your requirements, consult your Local Chromalox Sales office.

• ASME Certification to Section I, III, IV and VIII, Div. 1 PED • Custom Vessel Designs and Configurations Per Customer Specifications • Custom Designed Mechanical and Solid State Controls and Control Panels • Variety of Vessel Materials Available Including Carbon Steel and 300 Series Stainless Steels • Standard and Special Kilowatt Ratings • Standard and Special Voltages • NEMA 1, 4, 7 & 12 Control Panels and E1, E2 and E4 Terminal Enclosures • Third Party Certifications Available on Many Units Applications Customer Specifications — Chromalox satis fies many customer requirements using exist ing stock sub-components from our extensive inventory. However, when an application calls for a heater other than a catalog item, stock or assembled stock design, Chromalox has many special features and variations that can be added to circulation heaters to meet special customer requirements.

Vessel Pressure-Temperature Ratings — Non-ASME and ASME ratings to 2500 Lbs and operating temperatures to 1500°F are avail able. Low temperature and cryogenic designs and ratings are also available. Series Mounted System Voltage Ratings — Standard and special volt ages up to 600 volts. Electronic Controls and Control Panels — Electronic controls and panels for process and overtemperature control are available mounted on the units or as remote units. Process Thermocouples and Sensors — Thermocouples or RTD sensors can be mounted in vessel nozzles. Overheat Thermocouples on Sheath — Ther mocouples can be mounted on the element sheath(s) to sense sheath temperature and protect the heater. High Temperature Standoffs for Terminal Enclosures — Terminal enclosures on high temperature heaters can be mounted with standoffs to reduce enclosure temperatures.

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