Electrostatic field tester – knowledge – safety working technology (shenzhen) co.,limited gas city indiana zip code

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It is mainly used to determine the electrostatic properties of textile raw materials and finished products (including fibers, yarns, fabrics, carpets, decorative fabrics) under laboratory conditions. It can also be used to determine other sheets and plate materials such as paper, rubber, plastics, and composites. Plates and other electrostatic properties. The instrument host consists of a corona discharge device, a probe, and a detection system. Using a given high-voltage electric field, the sample is periodically discharged, so that the sample senses static electricity, so that the magnitude of static electricity, static voltage half-life, and static electricity residue are detected to determine the electrostatic properties of the sample being tested.

1. Before the measurement, first check whether the power supply is in compliance with the regulations, and whether the instrument housing (including the outer shielding tube of the probe) is grounded well and the instrument is cleared before testing. 2. The test probe shall be prevented from being in the space position of a shareholder perpendicular to the surface of the electrified object under test (specified test distance according to the instrument’s instructions), and the test distance variation will lead to a large test error. In order to avoid spark discharge between the test electrified body and the probe housing, when the measurement is started, the probe must be placed farther away (from the charged body) and gradually approach the charged body. 3. When testing the surface potential, the surface of the charged body should be far enough away from the grounding body. If the electrified body is in the form of a sheet or a thin film and the back side is close to the grounding body, there is a risk that space discharge or surface discharge may occur due to the local concentration of charge concentration when the probe moves to the vicinity of the grounding body. 4. When the measured part of the charged body is a large flat plate, the measured value is more accurate, but when the charged body surface to be measured has a certain radius of curvature, the measured value is greatly different from the actual potential value. Now. 5. The effect of the instrument’s own characteristics on the test accuracy should be considered. It should be calibrated and calibrated regularly before use. 6. The depth of the probe shield has certain influence on the test accuracy. The inductive electrostatic field tester is essentially a test of a local electric field of the tested electrified body. Therefore, it is necessary to minimize the interference and influence of the external electric field on the test signal. The usual method is to install this type of instrument and its probe in the grounded shielded casing. Obviously, the deep shielded outer shield of the probe will reduce the test accuracy of the instrument, and the lightness will be easily affected by the external electric field. 7. The value obtained by testing the surface potential of an object can be used as a qualitative reference. Accurate measurement is influenced by various factors and it is difficult to achieve in practical work. 8. Electrostatic voltmeters used in the electronics industry must consider the test accuracy and should be able to test static voltages of ±10v.