1、连接仪器的接地线

1. The grounding wire of the connecting instrument

2、选择确定POLARITY在+或-,确定测定正、负离子

2. Select the determination of POLARITY in + or - to determine the positive and negative ions

3、直立仪器，旋钮在OFF，按纽的开关放在STANDBY，然后然后旋钮至19.99×10n;

3, erect instrument, knobs on the OFF button to switch on the STANDBY, and then the knob to 19.99 x 10n;

4、热机1分钟，当数字不变化时(基本在一个中心变化)，按下按钮到RE-ZERO，并且保持3-5秒;

4, hot machine 1 minutes, when the number does not change (basically in a center change), press the button to RE-ZERO, and hold for 3-5 seconds;

5、当显示的数字在-0.02-0.02时，就已经稳定;如果不稳定，需要重新调零;

5. When the number is displayed at -0.02-0.02, it is stable; if it is unstable, you need to reset the zero.

6、测量时，按纽的开关放在MEASURE就开始测量;

6, when measuring the button switch began to measure in MEASURE;

7、根据显示的数值的大小，旋钮可以跟踪旋至不同的量程范围上;如果在测量过程显示数字1，则应调节到大一量程范围档位;

7, according to the size of the display, the knob can be tracked to different ranges. If the number 1 is shown in the measurement process, it should be adjusted to a larger range.