CRWS

Supported Applications

The Omega CRWS Series consists of semi-cylindrical ceramic radiant heaters designed for high-temperature applications. Produced by OMEGALUX™, these vacuum-formed units utilize helically wound iron-chrome-aluminum wire elements to provide radiant heat only. The series is intended for processes requiring temperatures up to 982°C (1800°F). Per manufacturer warnings, material must never come into direct contact with the face of the heater.

Operating Conditions & Performance

The CRWS Series is rated for a maximum operating temperature of 982°C (1800°F). The heaters are constructed from high-quality, vacuum-formed ceramic fiber. Engineering notes indicate that units may shrink at higher temperatures; this shrinkage can be up to 4% for temperatures reaching 980°C. Additionally, there is a potential variance of ±1/4" in the size of the heaters.

Electrical configurations include dual 240 Vac circuits for specific models. Resistance tolerance is specified as ±5%. The series supports various wattage and voltage combinations available across the model range.

Voltage and Power Configurations

• Voltages: Models are offered in 60 Vac, 120 Vac, and 240 Vac configurations.
• Dual Circuits: Certain high-wattage models operate on dual 240 Vac circuits.

Dimensional Considerations

• Vestibules: Units with vestibules require adding 3" to the 'A' dimension (length).
• Total Wattage Note: For configurations using two 12" long heaters, the indicated wattage represents the total of both units.

Configuration Options

The CRWS Series is available in a wide range of sizes and electrical ratings to accommodate specific installation requirements. The model number format follows CRWS-<Watts>/<Volts>--<C-A>, where the suffixes denote configuration options.

Housing and Configuration Options

• Vestibules: Models are available with or without vestibules. The '-C' designation indicates a unit complete with attached vestibules (e.g., CRWS-67/240-C-A).
• Lead Lengths: Specific variants include extended lead options, such as the 30" leads found in models like CRWS-188/240-A-30" LEADS.

Sizing and Dimensions

Variants cover a broad spectrum of internal diameters (ID) and lengths. For example, the ordering guide cites a 920 Watt, 240 Vac heater with a 15 cm (6") length and an 18 cm (7") ID as CRWS-67/240-A.

Material Composition

• Housing: High purity, vacuum-formed ceramic fiber with low sodium inorganic bond.
• Heating Element: Helically wound iron-chrome-aluminum wire.

Key Product Differences

The primary distinction within the CRWS Series lies in the presence of vestibules and specific dimensional configurations. Models without vestibules are designated with an '-A' suffix (e.g., CRWS-67/240-A), while models including attached vestibules carry a '-C-A' designation (e.g., CRWS-67/240-C-A).

Dimensional variations affect the overall length and internal diameter, allowing selection based on enclosure constraints. The series also includes specific variants with extended lead lengths to facilitate connection in restricted spaces.