Main purpose
This instrument is suitable for measuring the electrostatic properties of fabrics, plastic films, carpets, decorative samples, and other types of samples or various board shaped products under laboratory conditions. The instrument host consists of a corona discharge device and a probe detector. Using a given high-voltage electric field, discharge the sample for a fixed period of time to induce static electricity in the sample, thereby detecting the magnitude of static electricity, the half-life of static voltage decay, and the residual amount of static electricity to display the electrostatic performance of the tested sample.
Instrument features
The severity of the sample's charge is determined on one hand by the high or low static voltage after high-voltage discharge, and on the other hand by the duration of this static voltage. The static dissipation rate on the sample is represented by the static half-life, which is an important assessment indicator for testing the static performance of the sample.
The instrument consists of two parts: the host and the automatic control box. It can be tested using the timing method and the constant voltage method respectively. The instrument uses a digital voltmeter to directly display the instantaneous peak value and half-life value of the sample during high-voltage discharge. Automatic shutdown of high voltage and motor, easy to operate.
Technical indicators
1. The measurement range of electrostatic voltage is -10KV~0, with an accuracy of ± 1%
2. Half life time range: 0-99.99/s/m, resolution: 0.01s
3. Rotary disc diameter (200 ± 4) mm, speed 1500 revolutions per minute
4. The distance from the center of the turntable to the center of the sample and the center of the electrode is (72 ± 2) mm
5. Induction electrode plate diameter (28 ± 0.5) mm
6. Discharge time 0~9999s (experiment set at 30s ± 0.01s)
7. Discharge distance between needle electrode and sample: 20mm
8. Measurement distance between sensing electrode and sample: 15mm
9. Sample test size: 45mm × 45mm
10. The instrument has undergone static voltage measurement and calibration before being sent out
11. Before use, check according to the requirements. The oil cylinder inside the host must be filled with oil (transformer oil)
12. Power supply: 220V 50Hz 1.5kW.
Applicable standards
GB/T 12703.1-2021 Textiles—Test methods for electrostatic propensity—Part 1：Test method using corona charging
GB/T 14447-2025 Test method for electrostatic property of plastic filmHalf-life method
FZ/T 64082-2021 Scrim for filter media
JIS-L-1094 Testing methods for electrostati cpropensity of woven and knitted fabrics
ISO 18080-1-2015 Textiles - Test methods forevaluating the electrostaticpropensity of fabrics Part 1:
Test method using corona charging

GB/T 6719-2009 Specifications for bag house