ID-923 – Electrostatic Charge Decay Meter
Building on the success of the popular ID-489 and the ID-917 Charge Decay Meters, the ID-923 is a next generation microprocessor based instrument which has been developed to evaluate the antistatic properties of materials used in the fabrication of protective clothing..
The instrument has been designed to test in general accordance with the test method 2 described in the EN1149-3:2004 specification
The antistatic properties of these materials depend on the rate at which an accumulated electrostatic charge on the surface is dissipated.
Charging of the test specimen is carried out by an induction effect and immediately under the test specimen, which is horizontally arranged, a field-electrode is positioned, without contacting the specimen, and a high-voltage is rapidly applied to the field-electrode.
If the specimen is conductive, or contains conducting elements, charge of opposite polarity to the field-electrode is induced on the specimen.
As the amount of induced charge on the test specimen increases, the net field registered by the measuring probe decreases. It is this decrease in field that is used to determine the half decay time and shielding factor.
The effect is then measured and displayed on the TFT display and can be downloaded to a PC using a Type A to Type B USB cable.
To download the datasheet, please click here.