热电偶检定规程规定使用中的铂铑-铂热电偶在检定前应使灼热至1100℃±20℃的热电偶用化学纯硼砂对电极进行清洗。清洗质量的好坏对热电偶的使用寿命及热电势的影响有直接的关系。通常从市面上购买到的化学纯硼砂多为透明的结晶或结晶粉末,用这种硼砂进行清洗是很不方便的,如果将它制成长10厘米、直径1厘米左右的硼砂笔,用 Thermocouple test procedures require the use of platinum and rhodium - platinum thermocouple before the test should be hot to 1100 ℃ ± 20 ℃ thermocouple with chemically pure borax electrode cleaning. The quality of the cleaning of the thermocouple’s life and the impact of the thermoelectric power has a direct relationship. Usually commercially available chemically pure borax mostly transparent crystalline or crystalline powder, with this borax cleaning is very inconvenient, if it is made of 10 cm long, about 1 cm in diameter borax pen, with