805、806、807功能对照
| 特点 | 805 | 806 | 807 |
| 背光 | － | Backlight | Backlight |
| 中性线电流检测 | － | Neutral current capabilities | 100A Neutral Current Clamp included |
| 自动检测钳形适配器 | － | Auto-detect clamps | Auto-detect clamps |
| 可选FIFO内存 | － | Optional FIFO memory | Optional FIFO memory |
| 单相或三相测量 | Single or three-phase measurements | Single or three-phase measurements | Single or three-phase measurements |
| 真值 | True RMS | True RMS | True RMS |
| 数据存储（1M内存） | Data logging (1 memory) | Data logging (1 memory) | Data logging (1 memory) |
| /小/平均值 | Min/max/g | Min/max/g | Min/max/g |
| 电能及谐波程序 | Energy and Harmonics | Energy and Harmonics | Energy and Harmonics |
| PC机分析软件 | PowerVision Software | PowerVision Software | PowerVision Software |
| 可选程序 - 扰动 - 检查仪表 - 快速检查 | Optional programsDisturbancesCheck-MeterFast-Check | Optional programsDisturbancesCheck-MeterFast-Check | Optional programsDisturbancesCheck-MeterFast-Check |
| 轻质便携设计 | Lightweight portable design | Lightweight portable design | Lightweight portable design |
| 便于使用的按键设计 | Easy-to-use push button operation | Easy-to-use push button operation | Easy-to-use push button operation |
| 保护屏幕设置 | Pword protected on-screen setup | Pword protected on-screen setup | Pword protected on-screen setup |
| 160 x 160点阵式LCD | 160 x 160 pixel LCD | 160 x 160 pixel LCD | 160 x 160 pixel LCD |
| RS-232 通信接口 | RS-232 interface | RS-232 interface | RS-232 interface |
| 用户数据采集 | Customized data collection | Customized data collection | Customized data collection |
| 实时时钟 | Real-time clock | Real-time clock | Real-time clock |
| 可编程设置，触发点及开始/停止时间 | Programmable trigger-points and start/s time | Programmable trigger-points and start/s time | Programmable trigger-points and start/s time |
| 测量项目 | |||
| 有功功率（kW） | Kilowatts | Kilowatts | Kilowatts |
| 视在功率（VA） | Voltamperes | Voltamperes | Voltamperes |
| 感性无功功率（kvarL） | Inductive reactive power | Inductive reactive power | Inductive reactive power |
| 容性无功功率（kvarC） | Capacitive reactive power | Capacitive reactive power | Capacitive reactive power |
| 功率因数（PF） | Power factor | Power factor | Power factor |
| 频率（Hz） | Frequency | Frequency | Frequency |
| 千瓦时（kWh） | Kilowatt hour | Kilowatt hour | Kilowatt hour |
| 每小时无功功率（kvarL，kvarC） | Reactive power per hour | Reactive power per hour | Reactive power per hour |
| 总谐波畸变（％THD） | Total harmonic distortion | Total harmonic distortion | Total harmonic distortion |
| 谐波因数分解至51次谐波 | Harmonic factorization to 51stharmonic | Harmonic factorization to 51stharmonic | Harmonic factorization to 51stharmonic |
| 自动量程 | Auto ranging | Auto ranging | Auto ranging |
