LFY-401F Static Voltage Decay Tester (Computer Type)

The main purpose
Under laboratory conditions, this instrument is suitable for determining the electrostatic properties of textiles and garments, solid materials, plastic films, fibers, yarns, carpets, decorative fabrics and other fabrics or sheet products. The instrument host consists of a corona discharge device and a probe detector. Using a given high-voltage electric field, the fabric is discharged for a fixed time to induce static electricity in the fabric, so as to detect the amount 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 fabric.
Technical indicators
1. The instrument consists of two parts: the host computer and the computer detection system, which can be tested by the timing method and the constant pressure method respectively.
2. Computer (computer) control, constant pressure and timing are optional, and data can be printed out
3. The measurement range of electrostatic voltage value is 0 ~ ±10kV
4. The half-life time limit range is 0～99.99s/m/h±0.01s
5. The diameter of the turntable is (200±4) mm, the rotation speed is 1500 rpm, the distance from the center of the turntable to the center of the sample and the center of the electrode is (72±2) mm, and the diameter of the sensing electrode plate is (28±0.5) mm
6. Discharge time 0～99.99s/m/h ±0.01s
7. The instrument adopts a computer test system, which directly displays the instantaneous peak value and half-life value of the sample during high-voltage discharge, and displays the decay curve of the voltage changing with time in real time. It can be set to display the decay rate and voltage value of each time period (time points can be input, such as: 0-60s, 0-120s, 0-180s, 0-300s, 0-1000s, 0-2000s).
8. Automatic shutdown of high voltage and motor, safe and convenient operation.
10. Discharge distance between needle electrode and sample: 20mm
11. Measuring distance between the sensing electrode and the sample: 15mm
12. Sample size: 32mm×32mm
13. The instrument has been calibrated for static voltage measurement before it is issued.
14. Check as required before use, the oil cylinder in the main engine must be full of oil (transformer oil)
15. Power supply: 220V 50HZ 1.5KW.
Applicable standard:

GB/T 12703.1-2021 Textiles-Test methods for electrostatic propensity--Part 1:Test method using corona charging

FZ/T 64082-2021 Scrim for filter media

GB/T 14447-1993 Test method for electrostatic properties of plastic films--Half-life method

JIS L1094 Testing methods for electrostatic propensity of woven and knitted fabrics

ISO 18080-1-2015 Textiles-Test methods for evaluating the electrostatic propensity of fabrics Part 1:Test method using corona charging