简要介绍了ＰＴＢ（ 德国技术物理研究院） 压力范围为１００ ＭＰａ 的压力平衡器。叙述了低压时使用标准仪器进行比对测量的结果。对用作描述活塞系统有效面积压力关系的不确定度系数测定范围作了讨论。１００ ＭＰａ 压力平衡标准测量的相对不稳定度为ΔＰｅ／Ｐｅ＝３ ×１０ － ５ ＋ ３ ×１０ － ７ ＭＰａ－ １·Ｐｅ A brief description of the PTB (German Institute of Technical Physics) pressure balancer with a pressure range of 100 MPa is presented. Describes the results of alignment measurements using standard instruments at low pressures. The range of determination of the coefficient of uncertainty used to describe the effective area pressure of a piston system is discussed. The relative instability of 100 MPa pressure balance standard measurement is ΔPe / Pe = 3 × 10 - 5 + 3 × 10 - 7 MPa - 1 · Pe