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快堆采用液态金属钠作为冷却剂,由于液态钠的高温和活泼的化学性质,不能用常规的仪表进行热工测量,需研制专用仪表,如钠液位计和钠压力表、钠流量计等以用于钠冷快堆及试验回路。核能开发项目《放射性钠处理技术模拟实验研究》用钠喷射试验回路建设需进行钠压力和钠液位的准确测量,为此研制了1套YSPS-1000型钠压力表和1套YSLI-0800型钠液位计,外观如图1、2所示。研制的YSPS-1000型钠压力表,量程为0~1 MPa,最高工作温度为450℃,采用变阻式测量
Fast reactors use liquid metallic sodium as a coolant. Due to the high temperature and lively chemical properties of liquid sodium, thermometers can not be thermodynamically measured using conventional instruments. Special instrumentation such as sodium level gauges and sodium gauges, sodium flow meters, etc. are required For sodium-cooled fast reactor and test circuit. Nuclear energy development project “radioactive sodium treatment technology simulation experiment” to use sodium jet test circuit construction required for accurate measurement of sodium pressure and sodium level, thus developed a YSPS-1000-type sodium pressure gauge and a YSLI-0800 Sodium level gauge, the appearance shown in Figure 1,2. Developed YSPS-1000-type sodium pressure gauge, the range of 0 ~ 1 MPa, the maximum operating temperature of 450 ℃, the use of variable resistance measurement