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K type Temperature Sensor Thermocople With Welding

K Type thermocouple with Welding:

Type K Thermocouple (Nickel-Chromium / Nickel-Alumel): The type K is the most common type of thermocouple. It’s inexpensive, accurate, reliable, and has a wide temperature range. The type K is commonly found in nuclear applications because of its relative radiation hardness.

Temperature Range of K type sensor :

•Thermocouple grade wire, −140° to 2192°F (−60 to 1200°C)

•Extension grade wire, −32° to 392°F (0 to 200°C)

•Melting Point, 2550°F (1400°C)

Accuracy (whichever is greater):

•Standard: ± 2.2C% or ±.75%

•Special Limits of Error: ± 1.1C or 0.4%

Composed of a positive leg, which is approximately 90% nickel, 10% chromium and a negative leg, which is approximately 95% nickel, 2% aluminum, 2% manganese and 1% silicon.Type K Thermocouples are the most common general purpose thermocouple with a sensitivity of approximately 41µV/°C, chromel positive relative to alumel. It is inexpensive, and a wide variety of probes are available in its -60°C to +1200°C / -140°F to +2192°F range. Type K was specified at a time when metallurgy was less advanced than it is today, and consequently characteristics vary considerably between samples. One of the constituent metals, nickel, is magnetic; a characteristic of thermocouples made with magnetic material is that they undergo a step change in output when the magnetic material reaches its Cure Point (around 354 °C for type K thermocouples).




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