Electronic manufacturing companies are most afraid of producing high static voltages in the production process. At present, many customers only detect the resistance value of the containers used, while ignoring the static voltage detection, resulting in the static resistance of some products mixed into the production site through the surface treatment, If there is no way to know how much the electrostatic voltage value at the production site reaches, it will be difficult to ensure product quality. The higher the static voltage, the more serious the product will be, and even the product will die, which is also a problem that some high-end customers value.
With the development of science and technology and industry, the awareness of static electricity in all walks of life is gradually tightened. Anti-static products can effectively discharge or electrostatically neutralize the human body, effectively preventing the harm caused by electrostatic discharge. Before anti-static products are purchased in general, customers will require anti-static products manufacturers to issue inspection reports from third parties (National Testing Centers).
Friction voltage test method:
A. Ensure that the two tested objects and the surrounding environment are not charged before the test;
B. The friction process is not affected by other external objects;
C. Picking tools (tweezers, gloves, etc.) and worktables do not affect the electrostatic level of the test;
D. Static electricity can be kept for a certain period of time so that data can be read. Friction voltage test notes are as follows:
First, the instrument must be properly calibrated and zeroed;
Second, the correct distance of the electrode to the measuring surface;
Third, the correct grounding;
Fourth, the human body when the operator uses the ground and discharge;
Fifth, the surrounding environment of the measured object, measurement activities will affect the measurement results.
Introduce several instruments for measuring frictional voltage. Different brands have different advantages. The models are as follows:
1. FMX-004 Electrostatic Field Tester: The FMX-004 Static Voltage Tester is a multi-function digital tester equipped with a single-chip computer. Its palm-sized compact design uses an easy-to-see large LCD display with a maximum measurement range of ±30 kV. : 25mm), used for simple electrification measurement, investigation of specific electrification level in places where static electricity is generated, measures of electrostatic countermeasures, measurement of effects, maintenance management, etc.
Features 3 detection methods Select the measurement range according to the MODE button's conversion.
Electrostatic continuous measurement of ion balance continuous measurement and data recording possible.
The fixation screen represents and records the cancellation status confirmation record of the integrated memory product.
FMX-004 body: It can be tested for 30 hours continuously. 2. ACL-350 static voltage tester:
350 electrostatic tester features:
· 3 and a half liquid crystal digital display, automatic measurement of the static voltage value.
• The 25.4 mm (1 inch) measuring scale is suitable for repetitive static voltage measurements.
Automatically distinguishes the polarity of the static voltage. When the surface of the charged electrostatic object is negative, it shows negative polarity.
Battery capacity indicates "BAT".
• Measurement sample hold button.
· Multiple ranges, the relationship between the static voltage and the measured distance.
@1 inch: 0-20,000 volts, 100 volt carry @ 1/10 inch: 0-2,000 volts, 100 volt carry @ 4 inch: ± 40,000 volts, reading shows 2
@6.5 inches: ±60,000 volts, reading shows 3
@8.5 inches: ±80,000 volts, readings show 4
·The watch forms a grounding path through the anti-static material case. ·Standard 9-volt battery ·One-year warranty period. The warranty automatically expires when the case is opened. ·The highest measured value is 20,000 volts in the standard state. ·Measurement accuracy ±10%
· Complied with the NIST Calibration Certificate issued by the US National Bureau of Metrological Standards free of charge with the watch. · ACL 350 leather case · Weight 5 oz. · Size 107 mm × 61 mm × 23 mm 3. Does the static charge of the ACL-300B Pointer electrostatic tester positive or negative? This instrument is ideal for electrostatic sensitive areas such as electronic components manufacturing, assembly areas, hyperstatic rooms, computers, pharmaceuticals and R&D laboratories, operating rooms, medical equipment manufacturing plants, printing plants, packaging, and production. Test means. The ACL-300B is completely integrated and requires no auxiliary probe. To reduce over-range errors, the meter incorporates a nickel-plated sensing electrode that can be used in high/low (HI/LO) gears. The low (LO) range is: 13 mm (0.5 inch) from the surface to be measured, 0 to 500 volts; 102 mm (4 inches) from the surface to be measured, 0 to 3,000 volts; the HI range is: Measuring surface 13 mm (0.5 inch), 0-5,000 volts; 102 mm (4 inches) from the surface to be measured, 0-30,000 volts. To facilitate repeated measurements, the ACL-300B provides a unique “quick return” function that allows the meter to quickly return to zero and provide the user with ground compensation. • Electrostatic measuring range 0 to 30,000 V • Compact size for portability • Suitable for repeated readings at close range • Use of standard 9-volt battery • With battery test function • Low drift • Repeat error +/- 1%, accuracy +/- 10 %• One-year Warranty Use: 1. When the red battery/range selection switch is in the LO or HI position, the meter powers on. The static measuring range is shown in the following table: Distance of the red switch from the surface to be measured. 4. EFM-022 electrostatic field tester field strength meter measures the electrostatic potential. According to the test distance, the field strength is automatically converted to a potential rotary vane probe. , large range 2cm distance marker (detachable)
Test Mode: Potential Mode, CPS Charge Plate Mode Test Distance: 1cm, 2cm, 5cm, 10cm, 20cm Optional (default 2cm)
Test range: 0-200KV
Test accuracy: ±5%
Reading unit: V/KV automatic switching resolution: 1V
Automatic zero standby for more than 5 minutes after power-on Auto-shutdown Calibration accuracy adjustable Conductive body material Built-in timer, optional CPS test Static dissipation time and ion balance Optional VMS test Human walking static electricity level for evaluation of anti-static shoes/ Electrostatic discharge capability of the floor system The above several electrostatic field testers are from different countries. The difference between them is mainly different from the measurement range. The accuracy is not the same. The measurement accuracy of the friction voltage is different. The price has a certain gap. If necessary, please feel free to Get in touch with our business department, thank you!
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