NOTE: negative oxygen ions tester can measure some with negative ion generator of household appliances, For example Ionizers, Anion lights, Anion hair dryer, Air-conditioning fan, Air conditioning and so on to release several million more than a high concentration of negative oxygen ions can be tester but the Among the natural environment of negative oxygen ions can not test Leather / fabric / powder release negative oxygen ions can not be tested. Functional characteristics 1, measuring range: 10000 --- 19,990,000 (ions / cc) 2. Resolution: 10000 (ions / cc) 3, compact, easy to carry 4, can show positive and negative ion concentrations 5, for a variety of negative ion generator, air purifier, air conditioning, high concentration of the ion source to measure. 6, LCD display: display value units for the million, the maximum reading 1999 7, button battery using 1.5Vx2LR44 8, Size: 80mm (length) x 30mm (width) x 10mm (height) 9, the maximum value remains (AITP) Two, AIT (P) ion meter advantages: AIT (P) anion ion gauge is AIT gauge improved, it is the biggest difference between the AIT is the maximum value of the measured air ions remain on the display, it will give the instrument readings more stable, easy to read . Before each measurement to confirm the switch in the "off" position, when you start to make the instrument away from the object, so that its initial reading of zero or close to zero regulation and then slowly close the ion source. It displays the reading will remain until the power is turned off. Third, the use 1, the switch to the "ON" position. 2, keeping the thumb and the square in front of the sheet metal, the metal plate toward the back of the air tested negative ion generator, and tested the closer air anion generator tester readings higher, whereas smaller. Therefore, to ensure the accuracy of the measurement results, leave the meter and test negative ion generator to maintain an appropriate distance. 3, the measurement process, do not touch the metal piece to the back of the instrument, otherwise it would be inaccurate readings. 4. If the reading is not preceded by the measurement symbol is measured positive ions, if the display "-" is the anion surface. 5. To re-measure should first turn off the power, then restart it. 6, the measurement method textiles: the thumb in contact with the front metal plate, the metal plate toward the back of the textile gently rubbing test, the display will show the ion concentration and to polarity, which can produce ions as the ability of a fabric kinds of important reference.