Potential acquisition instrument

The utility model relates to the field of acquisition instruments, in particular to a potential acquisition instrument, which is characterized in that a supporting column with a clamping groove is arranged on a shell body to be matched with a first U-shaped clamping groove of a circuit board to clamp the circuit board, and a bearing plate and a clamping and rotating piece are arranged on an end cover to bear and clamp the circuit board. And four threading holes are formed in the bottom of the end cover, so that a cable can penetrate through the circuit board to connect the circuit board with a plurality of test ports, the acquisition of potential data of the test circuit board is realized, and the circuit board is ensured not to fall off in the acquisition process. 本实用新型涉及采集仪领域，具体提供了一种电位采集仪，本电位采集仪通过在外壳本体上设置带卡槽支撑柱，以和电路板的第一U型卡槽配合卡紧电路板，并在端盖上设置有承托板和卡转件，以承托电路板和卡紧电路板，并在端盖底部开设有四个穿线孔，以供电缆穿过将电路板和测试的多个端口连接，以实现测试电路板电位数据的采集，并且在采集过程中确保电路板不会跌落。