4-point-probe testing
- Contact / Contact quality influences measurement
- Possible damage to sensitive layers
- Single point sheet resistance testing only
- Wearing of probe with time
- No measurement of encapsulated films
- Only for hard and insensitive layers
Non-contact eddy current testing by EddyCus
- Non-contact & real-time, no wearing
- High accuracy without influence of contact resistance
- No harm or artifacts to sensitive films
- High resolution mapping, inline measurement for process control
- Encapsulated films & multilayer systems
- Best usage for touch-sensitive layers
How it works
How Eddy Current works
- A primary magnetic field is created when alternating current is injected into an induction coil
- Eddy Currents are generated when the coil is placed over a conductive sample
- The characteristics of the Eddy Currents are determined by material characteristics
- The Eddy Currents generate a secondary magnetic field opposed towards the primary field
- The impedance of the coil is affected by material differences that influence conductivity
- This influence is measured by a pick up coil
Testing Devices
(Some generic text to introduce all devices)
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Portable testing
Portable 1.5
Features
- a
- b
- c
Portable 5600
Features
- a
- b
- c
Non-contact single point measurement
2525
