一、仪表特点T29—A、V型电表采用单光源、双光标指示,刻度尺为游标刻度,并有足够长的标度尺,可以免除读数的视差及能准确读取测量值。仪表测量机构中的基本支撑系采用陶瓷支架,张丝为温度影响小的恒弹性张丝,使仪表的测量能满足温度影响指标的要求。励磁线圈的设计采用了无骨架、小直径的办法,使仪表有很高的性能和可靠的稳定性。双层磁屏蔽的采用,保证了仪表防外磁场影响的性能的提高。此外仪表的阻尼时间不超过两秒钟,在测量读数时也非常方便。 First, the instrument features T29-A, V meter with a single light source, double cursor instructions, the scale for the cursor scale, and a long enough scale to remove the parallax reading and can accurately read the measured value. The basic support system in the measuring device of the instrument adopts ceramic brackets, which are constant elastic filaments with small temperature influence, so that the measurement of the instrument can meet the requirements of the temperature influence index. Excitation coil design using a skeleton, small diameter approach, the instrument has a high performance and reliable stability. The use of double-layer magnetic shield to ensure that the meter anti-magnetic field to improve performance. In addition, the damping time of the instrument does not exceed two seconds, and it is also very convenient to measure the readings.