测量环境:液氮,77 K(-196 ℃)或其它冷浴 Measuring environment: liquid nitrogen, 77K(-196 ℃)or other cold bath 液氮液位传感器:用热导元件控制液位水平到±0.5 mm Sensor of liquid nitrogen level: control the level at ±0.5 mm using thermal conduction element 比表面测定范围:> 0.0005 m2/g (氪气);> 0.01 m2/g(氮气) Measuring range of specific surface: 0.0005 m2/g (Kr); > 0.01 m2/g (N2) 孔体积:< 0.0001 cc/g Pore volume: < 0.0001 cc/g 孔径范围:3.5~5000Å Range of pore diamater: 3.5~5000Å 重现性偏差:< 2% (BET SRM样品) Deviation of reproducibility: < 2% (BET SRM sample) |