MR300C-A微欧姆计使您能够对具有极低电阻的物体进行高度精确的电阻测量,如电缆、触点、熔断器、电源连接、石墨、碳和金属样品。100年最低测量范围µΩ分辨率10 nΩ!MR300C-A微欧姆计具有恒流系统,保证极稳定的测量电流(max。10A)测量期间。测量结果计算为内部参考电阻上的压降与测试对象上的(放大后的)压降的商。在每次测量电流流动的主要测量之前,要进行不测量电流的零测量,其中在测试对象上确定任何偏移电压,特别是热电电压。将存储的零点与实际主测量中确定的实际值进行比较。然后显示结果。在结果显示之前,可能会进行温度转换(见下文)或其他客户特定的转换(如线性化)。由于这种复杂的测量程序,MR300C-A的测量时间比可比仪器稍微长一点。 On the other hand, it is this complexity that guarantees the high accuracy and the very high long-term stability. The measuring current does not flow continuously, but only for a short period of a measurement. For this reason, the heating-up of the instrument is reduced, and therefore a more compact design of the MR300C-A is possible.