Applications and Technical Data

Specifications

Weight: Under 6.5 lbs/ft2 (31.75 kg/m2)

Voltage and Wattage: Ratings are based on the ceramic fiber heater module, which is mounted in the case. Up to 600VÅ(ac) is possible.

Terminals: Terminals are 14-20 threaded studs. Two terminals plus ground for single-phase, and three terminals plus ground for three-phase, are standard. They will be located on the center line of the length unless otherwise specified. Terminals can be located anywhere along lines A and B (see illustration), but not closer than two inches (51 mm) to the case ends.

Mounting Legs

One inch (25 mm) standard

Three inches (76 mm) optional from stock. For made-to-order units, mounting legs can be supplied in any incremental length L from 12 inch (13 mm) to three inches (76 mm). No slots are provided in legs less than one inch long.

Application Hints: A thermocouple mounting clamp will be provided on one end of the case, with holes on both ends for alternate locations. The standard clamp can be used with 18-inch (3.2 mm) O.D. sheath thermocouples. The standard clamp is

316 inch (4.8 mm) high, but can be removed for flush mounting*. The maximum recommended surface temperature of the heater is based on the rating of the ceramic fiber heater module. This can vary from 1095°C (2000°F) at lower watt densities, to higher watt densities at reduced surface temperatures. Note that maximum wattages cannot be achieved at the maximum temperatures simultaneously.

Heater Dimensions

 

Min.
Max.
Increments

 

 

 

 

 

 

Width: inches (mm)

2

(51)

30

(760)

Any

Length: inches (mm)

6

(152)

52

(1320)

Any

 

 

 

 

 

 

Note: Units will be 14 inch (6 mm) wider than the nominal size of the ceramic fiber heater. Overall length is equal to heater length, but thermocouple clamp not included in length.

Options

Several options are available with RAYMAX 1220 and 2030 models. Consult Watlow for more information on any of the options.

Single-phase non-standard location power terminals

Terminal box

Zoning

Mounting studs and legs

Three-phase construction

Thermocouple mounting tubes

Alternate case materials

How to Order

To order a stock, assembly stock, or standard heater, specify:

RAYMAX 1220 or 2030

Quantity

Watlow code number (from Watlow heater's catalog)

Mounting studs, if desired

Note: One-inch mounting legs are provided. Three-inch legs are available from stock upon request.

If our stock or standard units do not meet your application needs, Watlow can manufacture radiant heaters to your special requirements.

For made-to-orderunits, please specify, in addition to above information:

Heated width and length and overall size

Total wattage

Voltage, and phases or zones required

Load temperature expectations

Mounting studs, if desired

Mounting legs and leg height, if desired (one inch is

Overall Width =

Heated Width +1/4 in. (6 mm)

± 1/16 in. (1.5 mm)

 

 

1/4 in.

 

1/8 in. (3 mm) T/C Clamp

9/32 in. X 1/2 in. Slot (7 mm X 12 mm)

 

 

2 1/2 in.

3/8 in. (9 mm)

3/8 in.

(64 mm)

 

 

 

(9 mm)

L

1 3/16 in. (30 mm)

 

3/8 in.

 

A B

(9 mm)

 

 

 

7/8 in.(22 mm)

11/2 in. (38 mm)

Overall Length =

 

 

Heated Length

 

 

±1/16 in. (1.5 mm)

 

 

 

1

13/16 in. (30 mm)

 

1 /2 in.

 

 

(38 mm)

 

 

provided unless otherwise specified)

Location of terminals

Terminal box, if desired

Thermowell (specify size and location if standard end

 

clamp is not sufficient)

Supplying a drawing with an order or request for quotation can be very helpful in clarifying design information.

Availability

Stock: Shipment in one to two days

Assembly Stock: Shipment in two weeks

Standard: Shipment in three to four weeks

*18 inch (3.2 mm) is standard. 316 inch (4.8 mm) and 14 inch (6 mm) are available upon request.

Made-to-Order: Consult Watlow

To be automatically connected to the nearest North American Technical and Sales Office call:

1-800-WATLOW2

International Technical and Sales Offices: China, +86 (21) 5211-0231France, +33 (01) 3073-2425Germany, +49 (0) 7253-9400-0

Italy, +39 (02) 458-8841Japan, +81 (03) 3518-6630Korea, +82 (02) 575-9804Malaysia, +60 (4) 641-5977Mexico, +52 (442) 217-6235Singapore, +65 6773-9488Spain, +34 91 675 12 92 • Sweden, +46 31 7014959 • Taiwan, +886 (0) 7-288-5168

United Kingdom, +44 (0) 115-964-0777