Conductive material resistivity tester

1. Overview
When measuring the resistivity of conductive materials using three or two electrodes, the accuracy of the measurement may be affected by the surface resistance between the electrodes and the measured material. This device uses the four electrode method to measure the volume resistivity of conductive and anti-static materials, which can overcome the error caused by surface contact resistance,
This conductive and anti-static material resistivity measurement device fully complies with and exceeds the following standards:
National standard GB11210 "Determination of resistance of antistatic and conductive products of vulcanized rubber"
International standard ISO1853 "Conductive and anti-static rubber - Measurement of electrical resistivity"
International standard ISO 3915 "Test method for volume resistivity of conductive plastics"
National standard GB2439 "Determination method for electrical resistivity (coefficient) of conductive and anti-static rubber"
National standard GB/T15662 "Test method for volume resistivity of conductive and anti-static plastics"
Transportation Industry Standard JT230-95 Automotive Static Conductive Rubber Drag Belt
ASTM D991 standard "Rubber properties - Standard test method for volume resistance of conductive materials and anti-static products"
　

2. Technical parameters
Main technical indicators of BEST-991
2.1 Measurement range: 10-4 Ω· m to 105 Ω· m for metal conductors, electrostatic conductor materials, and electrostatic dissipation materials.
2.2 Accuracy: 1% to 5%
2.3 Electrostatic meter (electrostatic voltmeter): 100mV to ± 200V, input resistance ≥ 1014 Ω (100T Ω), 0.5-2%
2.4 picoampere ammeter: 1 × 10-15A (1fA), 0.5-3%
2.5 Digital Adjustable Voltage Source: 1%
2.6 Test shielding box (standard four electrodes included) (Note: Different standards have different electrodes, and a set of four electrodes that meet national standards can be provided free of charge.).
2.7 Insulation board ≥ 100T Ω· m (1014 Ω· m)
2.8 Current electrode distance: 100mm
2.9 Voltage electrode distance: 20mm Weight: 331g, pressure approximately 3.25 N

Technical specifications of BEST-13 electrostatic meter
1. Measurement range: DC ± 200mV - ± 200V, using resistive or capacitive voltage division can expand the measurement range.
2. Accuracy: ± (0.5% reading+2 words)
3. Input impedance: 1 × 1014 Ω (100T Ω)
4. Drift: Time drift: less than 0.5% within 24 hours; Temperature drift less than 0.05%/℃
5. Power supply: 220VAC, 50HZ 10W
6. Quality: 2KG
7. Size: 220mm × 230mm × 80mm
8. Measurement principle: This instrument uses a high-performance integrated circuit with extremely high input impedance as the input stage, with an input impedance greater than 1 × 1014 Ω

Technical specifications of BEST-12 picoampere ammeter
1. The current measurement range is from 20 × 10-3A to 1 × 10-15A (10fA to 20mA)
2. Display: 4.1/2 LED display
3. Accuracy: (Temperature: 18 ℃~28 ℃, relative humidity<70%)
Better than 0.5-1% reading+5 words (10-5-10-10 range)
Better than 1-2% reading+5 words (10-11~10-14 range)
Better than 1-2% reading+5 words (10-4 range)
4. Operating environment: Temperature: 10 ℃~40 ℃, relative humidity<90%
5. Power supply form: AC 220V, 50HZ, power consumption of about 10W
6. Volume and weight: 27 * 23 * 8cm, approximately 2kg
7. Features: small size, light weight, digital display, high accuracy, good stability, convenient reading
External direct current can be used to measure high resistance. Convert between NORMAL and FAST test modes directly (normal mode and ultra-low input impedance mode) to meet various needs