|
|
See other catalogues for Watlow
You may also be interested in
Text version of the page
| | | | | | | | | | | | | | | | | | Application Guide The Art of Temperature Sensing Recommended Upper Temperature Limits for Protected Thermoelements Upper Temperature Limits for Various Wire Sizes (B & S Gauge), °F (°C)—Ref. 28 | | | | | | | | | | | | | | | | | | | | | | | No. 8 Gauge, | No. 14 Gauge, | No. 20 Gauge, | No. 24 Gauge, | No. 28 Gauge, | No. 30 Gauge, | | | | | 3.25 mm | 1.63 mm | 0.81 mm | 0.51 mm | 0.33 mm | 0.25 mm | | | | Thermoelement | (0.128 in.) | (0.064 in.) | (0.032 in.) | (0.020 in.) | (0.013 in.) | (0.010 in.) | | | | JP | 760°C | 590°C | 480°C | 370°C | 370°C | 320°C | | | | | (1400°F) | (1100°F) | (900°F) | (700°F) | (700°F) | (600°F) | | | | JN, TN, EN | 870°C | 650°C | 540°C | 430°C | 430°C | 430°C | | | | | (1600°F) | (1200°F) | (1000°F) | (800°F) | (800°F) | (800°F) | | | | TP | — | 370°C | 260°C | 205°C | 205°C | 150°C | | | | | — | (700°F) | (500°F) | (400°F) | (400°F) | (300°F) | | | | KP, EP, KN | 1260°C | 1090°C | 980°C | 870°C | 870°C | 760°C | | | | | (2300°F) | (2000°F) | (1800°F) | (1600°F) | (1600°F) | (1400°F) | | | | RP, SP, RN, SN | — | — | — | 1480°C (2700°F) | — | — | | | | BP, BN | — | — | — | 1705°C (3100°F) | — | — | | | | NP, NN | 1260°C | 1090°C | 980°C | 870°C | 870°C | 760°C | | | | | (2300°F) | (2000°F) | (1800°F) | (1600°F) | (1600°F) | (1400°F) | | | | | | | | | | | | | | | | | | | | | | Note: This table gives the recommended upper temperature limits for the various thermoelements and wire sizes. These limits apply to protected thermoelements, that is, thermoelements in conventional closed-end protecting tubes. They do not apply to sheathed thermoelements having compacted mineral oxide insulation. In any general recommendation of thermoelement temperature limits, it is not practical to take into account special cases. In actual operation, there may be instances where the temperature limits recommended can be exceeded. Likewise, there may be applications where satisfactory life will not be obtained at the recommended temperature limits. However, in general, the temperature limits listed are such as to provide satisfactory thermoelement life when the wires are operated continuously at these temperatures. | | | | | | | | | | 46 | | | | | | | | | | | | | | | | | |
|