Compliant with standards:

GB/T 1410-2006 "Test Method for Volume and Surface resistivity of Solid Insulation Materials"

ASTM D257-99 "Test Method for DC Resistance or Conductivity of Insulation Materials"

GB/T 10581-2006 "Test method for resistance and resistivity of insulating materials at high temperatures"

GB/T 1692-2008 "Determination of Insulation Resistance of Vulcanized Rubber"

GB/T 2439-2001 "Determination of Electrical Conductivity and Dissipation Properties of Vulcanized Rubber or Thermoplastic Rubber"

GB/T 12703.4-2010 "Evaluation of electrostatic properties of textiles - Part 4: Electrical resistivity"

GB/T 10064-2006_ "Test Method for Determining Insulation Resistance of Solid Insulation Materials"

ASTM D 5682-95

GB 1672-1988Determination of volume resistivity of liquid plasticizers

1、 Overview

This instrument can measure both high resistance and micro current. Adopting large-scale integrated circuits from Intel Corporation in the United States, the instrument has a small size, light weight, and high accuracy. The digital LCD directly displays the resistance value and current. The measurement range is from 1 × 104 Ω to 1 × 1018 Ω, making it the widest and most accurate digital ultra-high resistance measuring instrument in China. The current measurement range is 2 × 10-4 to 1 × 10-16A. The internal test voltage is adjustable from 10V/50V/100V/250V/500V/1000V. This instrument has high accuracy, fast display, good stability, and convenient reading. It is suitable for measuring the volume and surface resistance values of various insulation materials such as rubber, plastic, film, powder, liquid, solid, and paste shapes. This instrument can not only measure resistance, but also directly measure weak currents.

2、 Main features

The resistance measurement range is wide from 0.01 × 104 Ω to 1 × 1018 Ω

The current measurement range is 2 × 10-4A to 1 × 10-16A

Small size, light weight, high accuracy

Dual display of resistance and current

Good and stable performance, easy to read

All test voltages (10V/50V/100/250/500/1000V) require direct reading of resistance results, eliminating the inconvenience of using old-fashioned high resistance meters to multiply coefficients at different test voltages or ranges. This makes measuring ultra-high resistance as simple as using a multimeter to measure ordinary resistance samples.

Can measure both ultra-high resistance and microcurrent

3、 Technical indicators

1. Resistance measurement range: 0.01 × 104 Ω~1 × 1018 Ω.

2. The current measurement range is: 2 × 10-4A to 1 × 10-16A

3. Display mode: digital LCD display

4. Built in test voltage: 10V, 50V, 100V, 250, 500, 1000V

5. Basic accuracy: 1% (* note)

6. Usage environment: Temperature: 0 ℃~40 ℃, relative humidity<80%

7. Internal test voltage: 10V/50V/100/250/500/1000V can be switched freely

8. Power supply form: AC 220V, 50HZ, power consumption of about 5W

9. Instrument size: 285mm × 245mm × 120mm

10. Quality: Approximately 2.5KG

4、 Working principle

According to Ohm's Law, the measured resistance Rx is equal to the applied voltage V divided by the current I. The working principle of traditional high resistance meters is to measure the voltage V fixed and obtain the resistance value by measuring the current I flowing through the sampling resistor. From Ohm's Law, it can be seen that since the current I is inversely proportional to the resistance, rather than directly proportional, the displayed value of the resistance is nonlinear. That is, when the resistance is infinite, the current is zero, and the zero position of the meter head is ∞. The scales near it are very dense, and the resolution is very low. The entire scale is non-linear. Moreover, due to the variation in voltage V when measuring different resistances, ordinary high resistance meters have poor accuracy and low resolution.

This instrument simultaneously measures the voltage V across the resistor and the current I flowing through the resistor. The voltage divided by the current is calculated through an internal large-scale integrated circuit, and the obtained result is then converted into a digital display of the resistance value through A/D conversion. Even if the voltage V across the resistor and the current I flowing through the resistor change simultaneously, the displayed resistance value does not change due to changes in the measured voltage V or current I like a regular high resistance meter. Therefore, even if changes in the measured voltage, measured resistance, power supply voltage, etc. do not have a significant impact on its results, its measurement accuracy is very high. Theoretically, its error can be zero, while the actual error can reach a few thousandths or tens of thousands.

Typical applications

1. Measure the resistance, volume resistance, and surface resistance (rate) of insulation materials

2. Measure the resistance and resistivity of anti-static materials

3. Measure the system resistance value of the raised floor used in the computer room

4. Measure the resistance value of anti-static shoes and conductive shoes

5. Measurement of Dark Current in Photodiodes

6. Physics, Optics, and Materials Research

Standard configuration:

1. Testing instrument: 1 unit

2 power cords: 1

3. Measurement lines: 3 (shielded wire, test wire, grounding wire)

4. User manual: 1 copy

remarks:

This instrument, equipped with different measuring electrodes (fixtures), can measure the volume resistivity, surface resistivity, or conductivity of different materials (solid, powder, or liquid), fully complying with the standard GB1410-2006 Solid Electrical Insulation Material Insulation Resistance, Volume Resistance Coefficient, and Surface Resistance Test Method, ASTM D257 Insulation Material DC Resistance or Conductivity Test Method? Waiting for standard requirements.