List of Current monitoring / sensing probes available from Com-Power.
Model |
Freq. Range |
Inner Dia. |
Max Current |
CLCE-332 |
9 kHz-300 MHz |
32 mm |
42 Amps @ 400 Hz |
CLCE-438 |
9 kHz-400 MHz |
38 mm |
30 Amps @ 400 Hz |
CLCE-1032 |
9 kHz-1000 MHz |
32 mm |
135 Amps @ 400 Hz |
Application of RF Current Probes
In general, RF current probes are employed to monitor, or measure, the asymmetrical disturbance RF currents on a wire, cable or cable bundle without making direct conductive contact with the source conductor. The current is measured inductively by clamping the probe around the conductor(s) to be tested. No actual contact is made with the conductor(s), and the insulation is left in place. Essentially, a current probe is a torroidal transformer where the conductor(s) act as a single turn primary, and the probe as a multiple turn secondary.
Current Probe Calibration Fixture
Current probes are calibrated through the use of a calibration fixture which provides a 50Ω coaxial-type transmission line arrangement. The fixture allows the probe to be clamped around the center conductor, while the outer conductor encapsulates the probe on four sides, so that the transmission line characteristics are not compromised. See calibration fixture picture on the following page.
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