More Efficient Energy
Why Change Your RF Coil?
Regular replacement of corroded coils reduces the load on the RF generating system.
Changing corroded coils increases energy transfer, resulting in a more robust plasma
and generally higher analytical line intensities.
Advantages of Glass Expansion RF Coils
High quality and consistent plating of our coils promotes extended coil life.
Each coil is supplied on a plastic former ensuring correct dimensions and easier installation.
Each coil is supplied in a special protective container to ensure correct dimensions are maintained, and the coil arrives
Correct alignment of the RF Coil with respect to the torch body reduces devitrification of the outer tube.
Reusable alignment tools ensure correct installation every time. Our CD with Do-It-Yourself instructions saves time.
The Role of the RF Coil
The RF Coil is a critical component in the electrical system used to generate an argon plasma. There are three factors affecting
the role of the RF Coil in transferring energy:
Concentricity and alignment - these are very important in producing a correctly shaped plasma. The Glass Expansion RF
Coil installation tools make this possible every time.
Correct dimensions - being part of the RF system, the coil dimensions are important in the tuning of the circuit. Slight
changes in dimensions can produce small changes in resistance or inductance and are normally compensated for in the
tuning circuitry of the system.
Base metal/plating - the most efficient conductor of RF energy is pure silver followed by annealed copper. There is very little
difference in the conductivity of these materials, however there is a great deal of difference in cost. Copper is used as the
base material of all commercially available coils but different manufacturers use different plating materials. Silver has the
best conductance and gold the best corrosion resistance.
The main problem with an RF Coil is corrosion, whether from heat or chemical oxidation. Corrosion reduces the
conductivity of the coil, reducing the efficiency of energy transfer to the plasma and increasing the stress applied to
other components in the RF generating system.
P/N 70-900-1000G shown.
Copper, Silver and Gold RF Coils.
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