1.Press the power button of the light touch switch to turn on the power, after turning on the red screen / red screen display value has nothing to do with negative ions.
2.Keep your thumb in contact with the front panel of the round gold-plated plate, the back of the gold-plated plate towards the negative air ion generator to be tested, when the yellow screen to blue screen when the negative number is displayed is the negative ion concentration, test to the maximum concentration will lock the negative ion concentration value, at this time press the unlock button to return to the yellow screen can be tested again, if there is no response then shut down and restart! The closer the distance to the air negative ion generator to be tested, the higher the degree of this tester, and vice versa, the smaller. Therefore, in order to ensure the accuracy of the measurement results, please keep the tester and the air negative ion generator to be tested at an appropriate distance, but can not touch the generator brush or gold needle.
3.Please do not touch the metal plate on the back of the tester with your hands during the measurement process. Otherwise, it will make the degree inaccurate.
4.Such as the display of degrees without a symbol in front. Indicates that the measurement is positive ions; if the display "-", it means negative ions.
5.Re-test press the unlock button that returns to the red screen, the large gold-plated plate again slowly near the negative ion outlet can be.
6.This tester test negative ion concentration only need to use the ON key and the unlock key. ON key and OFF key is connected to devices other than the tester test other concentrations used / and negative ion test has nothing to do!
7.When the test is repeated continuously, the value may not be the same each time. That is because the tester is not the same distance from the negative ion outlet when the value is locked. At this point can also be turned off and reboot and test again.
8.When the blue screen:
A: the upper right corner of the display 10X4 is the display value X10000 (for example: -10.27X10000 = -102700 / per cubic centimeter)
B: the upper right corner without display 10X4 is to display the value of less than 10,000 (for example -8197 = -8197ions/cm3)
C: When -1 is displayed, the concentration exceeds 99,999,000/cm3, is more than the test range of this tester!
This tester is a simple tester for personal use, can only refer to the negative value of the blue screen / no other functions!