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Single platinum rhodium s type thermocouple is the application characteristics and process parameters of _ the meter

by:JVTIA     2020-10-30
Single platinum rhodium s type thermocouple applied characteristics and technical parameters of the platinum rhodium - 10 Platinum thermocouple ( S type thermocouple) For precious metals thermocouple. Accidentally wire diameter provision of 0. 5 mm, allowable deviation - 0. The positive (015 mm, sp) In the name of the chemical composition of platinum rhodium, contain the rhodium is 10%, platinum-based is 90%, the cathode ( sn) For pure platinum, commonly known as single platinum-rhodium thermocouple. The temperature is 1300 ℃, the long-term use of thermocouple short-term use temperature is 1600 ℃. S type thermocouple in the thermocouple series has high accuracy, good stability, test your area wide, long service life, etc. Its physical and chemical performance is good, the thermoelectric potential stability and oxidation resistance at high temperature performance is good, suitable for oxidizing and inert atmosphere. Single platinum rhodium s type thermocouple deficiency is thermoelectric potential, thermoelectric potential rate is small, low sensitivity and mechanical strength under high temperature to drop, is sensitive to pollution, precious metal materials is expensive, and one-time investment is larger. S type thermocouple is also called single platinum-rhodium thermocouple, its index number is s degree, mainly measuring the temperature of 0 ~ 1600 ℃ medium, is one of the precious metal thermocouple category. Normal use in place of coking plant, steel plant and other high temperature use. S type thermocouple under normal circumstances, use for a long time at about 800 ~ 1300 ℃ temperature measurement of high precision, and in 800 ℃ temperature measurement accuracy is not high, but the long-term use of temperature above 1300 ℃ can easily damage the thermocouple, so select the correct index number of thermocouple temperature measurement accuracy is the important factor. Single platinum rhodium s type thermocouple main technical parameters of electrical exports: m20x1. 5, npt1/2 level of accuracy: I, ii protection grade: ip65 accidentally wire diameter: Φ 0. 5 nominal pressure: the atmospheric pressure
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