BL617 Standard Platinum Resistance Thermometer (SPRT) SPECIFICATION The Standard Platinum Resistance Thermometer (SPRT) is a kind of device to measure temperature through a change in electrical resistance of a length of wire. SPRT is the stipulated interpolation instrument for realizing the International Temperature Scale of 1990 between the defining fixed points, over the range from 13.8033 K (the triple point of equilibrium-hydrogen, -259.3467°C) to 961.78° C (the freezing point of silver). The transfer function of the SPRT is electrical resistance as a function of temperature; therefore an accurate measurement of resistance, referred to a fixed resistance base, is an essential component of the measurement chain. ■ Fused quartz sheathed ■ BL617 Standard platinum resistance thermometer ■ Wooden carrying case ■ Upgrade the annual drift sensor to 0.5mK ■ Reference thermometer for very accurate temperature measurements ■ Comparative calibration in tube furnaces and liquid baths Address: 1322, F/3, Bldg 1, 33 Zique Rd, Haidian, Beijing100095, China