Cylindrical Surface Resistance Probe from DESCO (222008)
This cylindrical surface resistance probe, DESCO part 222008, is intended for use with a resistance meter to determine point-to-point resistance (Rp), resistance to ground (Rg), and volume resistance (Rv) in accordance with EN 61340-5. The product has a contact surface with a diameter of 63 mm and features non-marking, carbon-impregnated conductive rubber pads.
Function and Design
- Contact diameter: 63 mm.
- Conductive contact pads: non-marking, carbon-loaded conductive rubber.
- Protective cap included to cover the contact pad when the probe is not in use.
- Insulating jacket and shape providing grip; insulation resistance specified at approximately 1 x 10^6 ohms.
- Designed for connection with a megohmmeter/ohmmeter for the described measurements.
Typical Applications
- Determination of resistance to ground (Rg) by connecting the probe to a megohmmeter and measuring between the probe and ground/ESD connection point at 100 V test voltage (one probe required).
- Point-to-point resistance measurement (Rp) using two probes to check the surface resistance of materials; measurement is performed at 100 V test voltage.
- Volume resistance measurement (Rv) by sandwiching the test material between two probes and measuring at 100 V test voltage (two probes required; the bottom probe is inverted for correct contact surface).
Documentation
The product's technical bulletin and user manual are published by DESCO and describe installation and measurement procedures as well as the package contents. For detailed information, see the manufacturer's technical bulletin:
Specifications
- Weight: 2.3 kg
- Dimensions: 67 mm x 87 mm ± 4 mm
- Diameter of contact surface: 63 mm
- Probe internal resistance: < 200 ohms at low test voltage
- Insulation resistance (insulating jacket): approximately 1 x 10^6 ohms
Source
- DESCO technical bulletin: See manufacturer's datasheet
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