GB-2439 Conductive and Semi conductive Rubber Material Volume Resistance Tester

1、 Product Introduction:

GB-2439Type conductivity andSemi conductive rubberMaterial volume resistivity testerA testing system consisting of a four probe instrument is used to measure the electrical resistivity of semiconducting rubber materials or films using the parallel four knife method and four terminal measurement principle/Multi purpose comprehensive measuring device for square resistance.Complies with the national standards specific to the rubber and plastic industry《GBT 3048.3-94 Test Methods for Electrical Properties of Wires and Cables - Volume Resistance Test of Semiconducting Rubber Materials

GB/T 2439-2001 Determination of Electrical Conductivity and Dissipation Properties of Vulcanized Rubber or Thermoplastic Rubber.The electrode group lifting and lowering of this test bench is a fast constant voltage manual mode, which has the characteristics of good stability, compact structure, and easy measurement. The sample box is made of materials that are resistant to high temperatures, corrosion, and high insulation, and is equipped with connecting electrodes. This makes it easy to clamp clean standard samples Drying, aging, testing, moving, etc., while avoiding contamination caused by hand contact with the sample and affecting testing accuracy. The instrument is suitable for testing the square resistance and resistivity performance of semiconductor or rubber materials in semiconductor film material factories, rubber material factories, metal film material factories, capacitor factories, scientific research institutions, universities, etc.

2、 Main technical parameters:

2.1 Measurement Range and Resolution

（1) Range of resistivity testing(Thickness) d<2.2mm, Width w<50mm)

Basic resistivity measurement value: 1.0×10^-6～ 5.00×10⁵Omega cm，

Resolution:1.0×10^-77～ 1.0×10³ Omega cm

Specific cross-section The relationship between s and measurement range is shown in Figure 2-1A.

（2）Scope of Square Resistance Test

Measure membrane width:1mm≤w≤50mm

Basic square resistance measurement value: 5.0×10^-6 ～ 2.000×10⁶ Ω/□,

Resolution:1.0×10^-4～ 1.0×10³ O and D.

Specific membrane width The relationship between w and measurement range is shown in Figure 2-1B.

2.2 Test knife holder:

⑴ Voltage blade spacing: 20mm ± 0.2%, blade length 60mm

⑵ Current blade spacing: 70mm, blade length 60mm

⑶ Test tool holder dimensions: 220 × 180 × 200 (length × width × height)