B type thermocouple

B type thermocouple is actual index number for B double platinum rhodium thermocouple, it can measure 0 ~ 1800 ℃ of the temperature of the medium, can be long-term use in 1300 ~ 1600 ℃. Is of high temperature thermocouple. Platinum rhodium - 30 Platinum rhodium thermocouple (6 B type thermocouple) For precious metals thermocouple. Accidentally wire diameter provision of 0. 5 mm, allowable deviation - 0. The positive (015 mm, 英国石油公司(BP) In the name of the chemical composition of platinum rhodium, contain the rhodium is 30%, platinum-based is 70%, the cathode ( BN） For platinum rhodium, rhodium for content 6%, therefore, commonly known as the dual platinum-rhodium thermocouple. The thermocouple * long-term high temperature of 1600 ℃, short-term * high temperature of 1800 ℃. B type thermocouple in the thermocouple series has high accuracy *, * good stability, test your area wide, long service life, high temperature limit, etc. Suitable for oxidation and inert atmosphere, can also be short term used in vacuum, but does not apply to reducing atmosphere or containing metal or nonmetal steam atmosphere. B type thermocouple is an obvious advantage don't need a compensation for the compensation conductor, because in the range of 0 ~ 50 ℃ and internal potential is less than 3 & mu; V。 B 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. Wear-resistant thermocouple adopts the special material of heat resistant materials and wear resistant alloy material as the temperature outside casing and head, according to the measured temperature is different, the choice of wear-resisting protection tube material is different, use flange connection or threaded connection mode, can use for a long time at 0 Temperature measurements in the range of 1400 degrees, is metallurgy, chemical industry, cement plant, power plants, fluidized bed boiler using in high temperature and abrasion environment * ideal measuring temperature sensor, the wear protection tube is equipped with armored core body, has high wear resistance, corrosion resistance, oxidation resistance, resistance to scour the performance of the protection tube can under the condition of high temperature with armored core have good protection effect, high service life * can take up to two years. Wear-resisting part of the thermocouple has wear-resisting, connecting rod, threaded connection or flange, junction box, armored, inner core of wear-resisting head should be according to the actual temperature to choose material manufacturing, connecting rod, threaded connection or flange should choose materials according to the scene have corrosive medium. Model and specifications model type and specification, number, degree, number ℃ temperature range gauge protection tube material thermal response time, length, diameter, L） Deep WRR - I 130年,WRR2 - 130 B 0 - The 1800 high aluminium, corundum, <, 150 s & Phi; 16 300 x150 350 x200型400 * 450×550 x400 650 x500 900 x750 1150 x1000 WRR - 1650 x1500 2150 x2000到 131年,WRR2 - 131 B 0 - 1800 < 150年代φ; 25 3 technical parameters of product standards IEC584 IEC751 JB/T5582 - 1991