EF009 Surface Resistivity Tester

A Surface Resistance Meter is a device used to measure the electrical resistance of a material's surface. It is commonly used in Electrostatic Discharge (ESD) control to evaluate how well a surface can dissipate static electricity.

Purpose of a Surface Resistance Meter

• Determines if a material is conductive, dissipative, or insulative based on its surface resistance.

• Ensures compliance with ESD safety standards (e.g., IEC 61340-5-1, ANSI/ESD S20.20).

• Helps prevent electrostatic damage to sensitive electronic components in industries like electronics manufacturing, cleanrooms, and aerospace.

How It Works

• The meter applies a known voltage (typically 10V or 100V) across two electrodes placed on the surface.

• It then measures the resistance in ohms (Ω) and categorizes the material:

• Conductive: $10^3$ – $10^5$ Ω

• Dissipative: $10^6$ – $10^11$ Ω

• Insulative: $10^{12}$ Ω or higher