Ceramic Thermocouple - Items tagged as "Ungrounded"
Thermocouples protected with Ceramic tubes or insulators provides solutions for High Temperature applications along with reducing or vacuum atmospheres. Typically the thermocouples in these environments are Type R, S, B, C, K or N.
- Type B and C thermocouples are used at 2700°F (1480°C) and higher.
- Type B platinum based thermocouples can operate up to 3,092°F (1700°) and works in air or oxidizing environments, although are sensitive to contamination from a furnace and/or materials being processed.
- Type B sensors must be in vacuum-tight assemblies filled with air in a vacuum or reducing environment. The ceramic tube protection material must be compatible with the environment.
- Type C tungsten rhenium thermocouples are for extreme high temperatures up to 4,200°F (2315°C), they work well in vacuum, hydrogen, or inert atmospheres, although will fail very quickly in air at high temperatures.
- Type R and S thermocouples are typically used at 2000°F (1100°C) and Higher temperatures up to 2700°F (1480°C)
- Type R and S also work well in air and have the same conditions as Type B with contamination, and subject to deterioration in vacuum or reducing environments
- Type R has 3% more Rhodium and it offers improved stability and a slightly higher temperature range than Type S. It also has 15% more milivolt ouput.
- Type K and N thermocouples are used up to 2000°F (1095°C) and can work in both a vacuum and inert atmospheres. Both are sensitive to reducing atmospheres, an must be protected when using a process gas such as hydrogen.
- Type K and N thermocouples operating in vacuum at high temperature for extended periods can become inaccurate due to vaporization of chrome from the positive leg.
- Type K and N thermocouples are less expensive than the platinum based Type R, S and B along with the tungsten rhenium based Type C.
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- Type B Platinum Rhodium Thermocouple - Ceramic Sheath 8 to 12 Inches Long 1/8" Diameter with 30 Gage (.010") Internal Wire and Miniature Male Connector from $440.00
- Type R Thermocouple - Ceramic Sheath 6 Inches and LONGER 1/8" Diameter with 30 Gage (.010") Internal Wire and Miniature Male Ceramic Connector from $295.00
- Type K Ceramic Sheath Thermocouple Probe Assembly 12" Inch Long 1/8" Diameter Alumina Sheath Ungrounded with Miniature Male Connector $70.00
- Type B Thermocouple (Platinum Rhodium) with a 6 Inch Long 1/8" Diameter Ceramic Sheath and 30 Gage (.010") Internal Wire with a Miniature Male Ceramic Connector $380.00
- Type C Thermocouple 6 Inch and Longer 1/8" Diameter Ceramic Sheath Ungrounded and Miniature Ceramic Connector from $170.00