 | CONTRUCTION
1.Seamless stainless steel sheath
2. Post terminals
3. Ceramic element support
4. Element wire situated close to outside surface for maximum heat transfer and minimum internal temperature while preserving good dielectric qualities
5. Magnesium oxide packing
6. Aluminum fins offering maximum radiating surface and providing for rapid heat transfer to the surrounding medium. Stainless steel fins are available for corrosive environments. Aluminum fins are standard. |
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TOLERANCES
Length: Up to 610 mm (24"),
±1.6 mm (1/16"); 610 mm (24") and over,
±3.2 mm (1/8")
Wattage: -10 to 5% at rated voltage
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Formula for Determination of Watt Density |
| Watts/sq. in. | = | Total unit wattage |
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| F (finned length) x3 |
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| Type of Air | Ft./min. | °C (°F) | Max. Watts/Sq. In. |
| Still | — | Up to 149 (300) | 20 |
| Still | — | 149 to 315 (300 to 600) | 16 |
| Still | — | 315 to 427 (600 to 800) | 10 |
| Moving | 600 | Up to 93 (200) | 40 |
| Moving | 600 | to 204 (200 to 400) | 30 |
| Moving | 600 | 204 to 315 (400 to 600) | 20 |
| Moving | 1200 | Up to 93 (200) | 50 |
| Moving | 1200 | to 204 (200 to 400) | 35 |
| Moving | 1200 | 204 to 315 (400 to 600) | 25 |
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| Model No. | Watts | Dimensions: cm (in) |
| A | B | F |
| FSH-080-120V | 400 | 20 (8) | 18 (7) | 8 (3) |
| FSH-080-240V | 400 | 20 (8) | 18 (7) | 8 (3) |
| FSH-105-120V | 300 | 27 (10.5) | 24 (10) | 15 (6) |
| FSH-105-240V | 300 | 27 (10.5) | 24 (10) | 15 (6) |
| FSH-120-120V | 500 | 30 (12) | 28 (11) | 20 (8) |
| FSH-120-240V | 500 | 30 (12) | 28 (11) | 20 (8) |
| FSH-121-120V | 750 | 30 (12) | 28 (11) | 20 (8) |
| FSH-121-240V | 750 | 30 (12) | 28 (11) | 20 (8) |
| FSH-150-120V | 500 | 39 (15) | 36 (14) | 27 (11) |
| FSH-150-240V | 500 | 39 (15) | 36 (14) | 27 (11) |
| FSH-180-120V | 750 | 46 (18) | 43 (17) | 34 (13) |
| FSH-180-240V | 750 | 46 (18) | 43 (17) | 34 (13) |
| FSH-181-120V | 1250 | 46 (18) | 43 (17) | 34 (13) |
| FSH-181-240V | 1250 | 46 (18) | 43 (17) | 34 (13) |
| FSH-237-120V | 1000 | 60 (24) | 58 (23) | 48 (19) |
| FSH-237-240V | 1000 | 60 (24) | 58 (23) | 48 (19) |
| FSH-357-240V | 2500 | 91 (36) | 58 (23) | 48 (19) |
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