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Model 260TWI - Weld-In, Model 385TWI - Weld-In
Please Note: Tel-Tru data on Thermowell performance is from industry standards in common use by design engineers and other manufacturers. Tel-Tru is not responsible for errors resulting from omission, transmission, transposition, printing, or interpretation of such data.
PRESSURE - TEMPERATURE RATING - PSI | ||||||||
Temperature - °F | ||||||||
Well Type | Material | 70° | 200° | 400° | 600° | 800° | 1000° | 1200° |
1-1/2" Diameter 260TWI | Carbon Steel | 5950 | 5750 | 5450 | 5250 | 4000 | 1750 | - |
304SS | 7800 | 7050 | 6400 | 6150 | 6000 | 5190 | 1875 | |
316SS | 7800 | 7800 | 7250 | 7100 | 6950 | 5800 | 2720 | |
F-11 | 7350 | 7350 | 7350 | 7350 | 7350 | 2898 | 504 | |
F-22 | 7224 | 7224 | 7224 | 7224 | 7098 | 3192 | 546 | |
1-1/2" Diameter 385TWI | Carbon Steel | 5200 | 5000 | 4800 | 4600 | 3500 | 1500 | - |
304SS | 7000 | 6200 | 5600 | 5400 | 5200 | 4500 | 1650 | |
316SS | 7000 | 7000 | 6400 | 6200 | 6100 | 5100 | 2500 | |
F-11 | 6562 | 6562 | 6562 | 6562 | 6562 | 2587 | 450 | |
F-22 | 6450 | 6450 | 6450 | 6450 | 6337 | 2850 | 487 |
MAXIMUM FLUID VELOCITY - FEET PER SECOND | |||||||||
Insertion Length - "U" | |||||||||
Well Type | Material | 2-1/2 | 4-1/2 | 7-1/2 | 10-1/2 | 13-1/2 | 16-1/2 | 19-1/2 | 22-1/2 |
1-1/2" Diameter 260TWI | Carbon Steel | 493 (306) | 220 (170) | 79.4 | 40.5 | 24.5 | 16.4 | 11.7 | 8.8 |
304SS; 316SS | 539 (443) | 233.5 (231) | 84 | 42.8 | 25.9 | 17.3 | 12.4 | 9.3 | |
F-11 or F-22 | 549 (451) | 237 (235) | 85.5 | 43 | 26.4 | 17.6 | 12.6 | 9.5 | |
1-1/2" Diameter 385TWI | Carbon Steel | 451 (286) | 269 (159) | 96.9 | 49 | 29.9 | 20 | 14 | 10.7 |
304SS; 316SS | 531 (385) | 285 (220) | 102 | 52 | 31.6 | 21.2 | 15 | 11.4 | |
F-11 or F-22 | 542 (392) | 290 (224) | 104 | 53.2 | 32 | 21.5 | 15.4 | 11.6 | |
Note: Values are for steam, air, gas and similar density. Values shown in parenthesis are for water flow only. |