Watlow Heater Catalog

Reference Data

Tubular Elements and Assembly Selection Guide

Supplemental Applications Chart (Continued)

WATROD Element

FIREBAR Element

Max.

Max. Watt

Max. Watt

Operating

Heated Material

Temperature

Density

Sheath Material

Density

Sheath Material

°F

(°C)

W/in 2 (W/cm 2 )

W/in 2

(W/cm 2 )

Proponic (10% max.)

180

(82)

40

(6.2)

Alloy 800

40 40 40 16 16 16 48 16 a 30 30 30 30 40 16 16 a

(6.2) (6.2) (6.2) (2.4) (2.4) (2.4) (7.4) (2.5) a (4.6) (4.6) (4.6) (4.6) (6.2) (2.5) (2.5) N/A N/A (4.6) (4.6) (4.6) (4.6) (6.2) N/A N/A N/A N/A (6.2) (6.2) (2.5) N/A a a (4.6) — — —

304 SS 304 SS Alloy 800 Alloy 800 304 SS Alloy 800 Alloy 800 304 SS Alloy 800 304 SS Alloy 800 Alloy 800 304 SS 304 SS Alloy 800 304 SS Alloy 800 N/A

Tannic Tartaric

167/180 (75/82)

23/40 (3.6/6.2)

Steel/304 SS

180 180 130 200 212 122 ¿ 167 240 212 350 212 150 225 400 200 210 210 180 185 275 212 212 180 180 180 180 180 180 300 180 300 300 — 160 212 a

(82) (82) (54)

40 10 10 10 40 10 a 23 23 20 23 40 10 10 20 48 23 23 23 23 20 23 40 40 40 40 40 40 30 10 40 a a 23

(6.2) (1.6) (1.6) (1.6) (6.2) (1.6) a (3.6) (3.6) (3.1) (3.6) (6.2) (1.6) (1.6) (3.1) (7.4) (3.6) (3.6) (3.6) (3.6) (3.1) (3.6) (6.2) (6.2) (6.2) (6.2) (6.2) (6.2) (4.6) (1.6) (6.2) a a (3.6)

316 SS

Acetaldehyde

Alloy 800 304 SS Alloy 800 Alloy 800

Acetone

Air

¿

Alcyl alcohol

(93)

Alkaline solutions Aluminum acetate Aluminum potassium sulfate

(100)

Steel

(50)

316 SS

(100)

Alloy 800

N/A

Ammonia gas

Steel

a

Ammonium acetate

(75)

Alloy 800 Alloy 800 304 SS 304 SS 316 SS Alloy 800 316 SS 316 SS Alloy 600 Alloy 800 Alloy 800 Alloy 800 Alloy 800 Alloy 800 Alloy 800 Steel

Amyl acetate Amyl alcohol

(115) (100) (176)

Aniline Asphalt

200-500 (93-260) 4-10 (0.6 - 1.6)

6-12

(0.9 - 1.8) 304 SS

Barium hydroxide Benzene, liquid

(100)

(65)

Butyl acetate

(107) (204)

Calcium bisulfate Calcium chloride Carbon monoxide Carbon tetrachloride

N/A N/A

N/A N/A

(93)

5-8

(0.8 - 1.2)

Alloy 800 Alloy 800

—

a

(71)

30

Caustic soda: 2%

(98) (98) (82) (85)

— — — 30 30 30 30

Contact Watlow Contact Watlow Contact Watlow

10% concentrate

75%

Citric juices

Alloy 800 304 SS 304 SS

Degreasing solution

(135) (100) (100)

Steel

Dextrose

304 SS 304 SS

Dyes and pigments

304 SS

Electroplating Baths: Cadmium

(82) (82) (82) (82) (82) (82)

304 SS 316 SS 316 SS 316 SS 316 SS 316 SS

40

304 SS

Alloy 800

N/A N/A N/A N/A

N/A N/A N/A N/A

Dilute cyanide

Rochelle cyanide Sodium cyanide Potassium cyanide

40

304 SS

Ethylene glycol Formaldehyde

(148)

Steel

40 16

304 SS 304 SS 304 SS 304 SS

(82)

304 SS

Freon ® gas

(148) (148)

2-5

(0.3 - 0.8)

Steel Steel

¿

¿

Gasoline

23

(3.6)

30

(4.6)

CONTINUED

a Contact your Watlow representative.

546