RF Current Monitor Probes

(855) 364-2362

For conducted emission tests

Current monitor/sensing probes measure superimposed RF currents flowing in conductors or cable harnesses. The main application is to measure conducted emissions to meet various EMC standards. Somc common standards that require conducted emissions measurements include CISPR 16-1-2, DO-160 and Mil-std 461.

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

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
CLCE-252	9 kHz – 230 MHz	52 mm	200 A @ 400 Hz (typical)
CLCE-452 V2	9 kHz – 400 MHz	52 mm	100 A @ 400 Hz (typical)

CLCE‑252:
Designed for high-current applications, this probe features a large 52 mm aperture and supports up to 200 A at 400 Hz across a 9 kHz–230 MHz range, ideal for thick cable bundles in compliance testing.

CLCE‑452 V2:
This updated version offers a 52 mm aperture and operates from 9 kHz to 400 MHz, making it suitable for medium- to high-current RF monitoring in both commercial and military EMC testing scenarios.

CLCE‑332

This split‑core ferrite clamp probe covers 9 kHz–300 MHz with a 32 mm aperture and handles up to 42 A at 400 Hz. It’s calibrated individually, supports CISPR, MIL‑STD 461, DO‑160 standards, and includes a 3‑year warranty.

CLCE‑438
Offering a broader 9 kHz–400 MHz range and a larger 38 mm diameter, the CLCE‑438 is suited for medium current monitoring (30 A @ 400 Hz) in conducted emission and immunity testing environments.

CLCE‑1032
Designed for wideband applications up to 1 GHz, the CLCE‑1032 shares the compact 32 mm inner diameter with the CLCE‑332 but supports heavy currents up to 135 A @ 400 Hz, ideal for high-power cable testing.

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.

CLCE-1032

32 mm Aperture

9 kHz to 1000 MHz

CISPR, MIL-STD 461, RTCA-DO160

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CLCE-252

52 mm Aperture

9 kHz to 230 MHz

CISPR, MIL-STD 461, RTCA-DO160

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CLCE-332

32 mm Aperture

9 kHz to 300 MHz

CISPR, MIL-STD 461, RTCA-DO160

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CLCE-438

38 mm Aperture

9 kHz to 400 MHz

CISPR, MIL-STD 461, RTCA-DO160

View Product

CLCE-452 V2

52 mm Aperture

9 kHz to 400 MHz

CISPR, MIL-STD-461, RTCA-DO160

View Product

Other EMC Test Equipment

Promotional Code is for current offers only. https://www.com-power.com/current-offers

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RF Current Monitor Probes