主要技术特点：

High-Sensitivity , DC Stable Electrostatic Voltmeter Measurement Range:  0 to ±40 V DC or Peak AC Sensitivity:  1 mV Noise:  Less than 1 mVrms, Referenced to Measured Voltage High Seed of Response:  Less Than 3 ms for a 10 V Step Voltage Monitor Accuracy:  Better Than 0.05% of Full Scale

Null Voltage Source:  0 to ±10 Volt Calibrated Supply (nulls measured surface contact potential in reference to probe’s gold sensing electrode) Drift Spacing/Null Adjustment (minimizes measured variations in voltage as probe to test surface spacing changes) Voltage Monitor Outputs:  1:1 and 10:1 of measured voltage

Trek的Mode 325静电电压表是一种多功能仪器，用于非接触式静电电压测量，包括接触电位（表面功函数）测定、材料评估和驻极体研究。Mode 325是专为高灵敏度应用而设计的，允许在广泛的探头到表面距离范围内，对0至±40 V的静电电压进行高精度、低噪声、无接触测量。