[2 IN 1]: This electrostatic meter can measure the surface electrostatic value of objects (0-22kv), and can also measure the ionic balance of the electrostatic elimination equipment (0~200v). [ACCURATE MEASUREMENT]: Grounding buckle of this electrostatic field tester ensures the correct and accurate results, Measurement range: 0-20kv; Ion Balance Measurement Range 0 ~ ±200V; Measurement Accuracy: ±10%; Equipped with two LED lights to ensure that the measurement is kept 1inch away from the measured object. [LCD DIGITAL DISPLAY]: Red LCD display shows positive charge, blue LCD display shows negative charge. The 5 times/sec LCD update rate and 1 sec response time make observing and recording data more efficient. Power level also appears on the display. [SOUND ALARM]: Automatic alarm when the electrometer is turned on, automatically shut down and exceeds the measurable range, which allows you to clearly know the status of the electrometer. [WIDE APPLICATION]: This electrostatic instrument can be used in laboratory conditions to measure the electrostatic properties of textile raw materials and finished products (such as fibers, carpets, etc.), it also can be used to measure the electrostatic properties of other plate materials(such as paper, rubber, plastic, etc.) Product Description The electrostatic field tester is a non-contact portable electrostatic field tester, which can measure the surface electrostatic value of objects and the ion balance of electrostatic eliminating equipment. It is mainly used to measure the electrostatic properties of textile raw materials and finished products (including fibers, yarns, fabrics, carpets, decorative fabrics), paper, rubber, plastics, composite sheets, etc. under laboratory conditions. Principle: Using a given high voltage electric field, release electricity regularly to the sample to generate static electricity, and then the electrostatic quantity, half-life of electrostatic voltage and residual electrostatic quantity are detected to determine the electrostatic performance of the tested sample. Specifications: Model: FMX003 Output:Red LCD for positive charge, blue LCD for negative charge Power supply: 9V, 6F22 manganese battery Test accuracy:±10% Measuring range:0 ~±1.49KV (Low range), ±1.0kV ~±20.00kV (High range) Accuracy:±0.1KV (Low range), ±1kV (High range) Measuring distance: 1 inch ±0.2inch (25mm±0.5mm) Ion balance:0 ~±200V LCD display renewal rate:5 times/s Response time:1s Working environment:10~40°C, RH:0~60% Sound alarm: automatic shutdown / turn on / beyond the measurable range Automatic shutdown: No operation for about 5 minutes Mode Switching: Electrostatic field:press “POWER” and a beep sound Ion balance (please install ion balance measurement board):press “Power”, then press “IB” Weight(battery not included):0.17kg Size(cm):165mm*25*115mm