RF Current Probe, 27 mm Aperture

CLCE-227

9 kHz to 230 MHz

CLCE-227 RF current probe with 27 mm aperture for EMC testing

RF Current Probe, 27 mm Aperture

  • CLCE-227 RF current monitoring probe, 9 kHz to 230 MHz — a wideband split-core current probe for conducted emissions measurement and RF current monitoring across commercial, automotive, military, and aerospace EMC testing.
  • Standards-compliant current probe for CISPR, MIL-STD-461, and RTCA DO-160 — meets CISPR 16-1-2 requirements for current monitoring probes and supports conducted emissions and immunity testing per CISPR 22/32, MIL-STD-461, and DO-160.
  • Compact 27 mm (1.06") aperture for individual wires and small bundles — the small window clamps neatly around single conductors and tight harnesses where larger current probes will not fit.
  • Nominal −11 dBΩ (0.28 Ω) transfer impedance for accurate current readings — delivers dependable voltage-to-current conversion with 50 Ω spectrum analyzers and EMI receivers.
  • Used during MIL-STD-461 CS114 conducted susceptibility testing — monitors RF current on the EUT harness while a BCI probe injects energy, providing real-time verification that injected levels meet CS114 requirements and detecting over- or under-injection.
  • Hinged split-core design for fast, non-intrusive clamp-on measurement — opens to clamp over installed cables and harnesses without disconnecting connectors, then functions as a toroidal transformer for safe, contactless RF current sensing.
  • Ideal for Bulk Current Injection (BCI) immunity current monitoring — precisely monitors applied RF current during BCI conducted susceptibility testing (such as MIL-STD-461 CS114), validating that injected levels meet test requirements.
  • NIST-traceable individual calibration for accurate, repeatable results — each probe ships with NIST-traceable transfer impedance calibration data; ISO/IEC 17025 accredited calibration available on request, with a three-year warranty.
  • Optimized for use with Com-Power accessories — pairs with the FCLCE-227 Calibration Fixture and the SPA-932TG Spectrum Analyzer for full system compatibility and a complete, standards-compliant RF current measurement setup.

CLCE-227 Features

  • RF current monitoring / sensing probe — for conducted emissions and immunity testing
  • Frequency range 9 kHz to 230 MHz
  • Meets CISPR 16-1-2 requirements for current monitoring probes
  • Suitable for CISPR 22/32, MIL-STD-461, and RTCA DO-160 EMC testing
  • 27 mm (1.06") aperture — fits the target cable and bundle range
  • Hinged split-core design — clamps over installed cables without interrupting the setup
  • Inductive toroidal-transformer measurement — safe, non-contact RF current sensing
  • Type-N (female) connector — consistent, high-quality RF interfacing
  • Ideal for Bulk Current Injection (BCI) immunity current monitoring
  • NIST-traceable individual calibration — ISO/IEC 17025 accredited calibration available on request
  • Three-year warranty

CLCE-227 Specifications

Parameter Specification
Model CLCE-227
Type RF current monitoring / sensing probe
Applicable Standards CISPR 16-1-2; CISPR 15/22/32, MIL-STD-461, RTCA DO-160
Frequency Range 9 kHz to 230 MHz
Window (Aperture) Inside Diameter 1.06" (27 mm)
Outside Diameter 3.34" (84.8 mm)
Height 0.76" (19.4 mm)
Width 4.07" (103.4 mm)
Weight 0.55 lb (0.25 kg)
Connector Type-N (female)
Core Design Hinged split-core (clamp-on)
Insertion Loss 45 dB (nominal)
Transfer Impedance (Zt) −11 dBΩ (nominal); 0.28 Ω (nominal)
Insertion Impedance < 1 Ω
Max Primary Current (DC–60 Hz) 35 A
Max Primary Current (400 Hz) 25 A
Max Primary Current (RF) 3 A
Pulse Current (8/20 µs) 1200 A
Calibration NIST-traceable individual calibration; ISO/IEC 17025 accredited optional
Warranty 3 years
Calibration: Each CLCE-227 ships with NIST-traceable individual transfer impedance calibration data; ISO/IEC 17025 accredited calibration is available on request. Calibrate and verify with the FCLCE-227 Calibration Fixture.
Measurement system: For a complete RF current measurement and monitoring setup, pair the probe with the SPA-932TG Spectrum Analyzer. The probe is also ideal for monitoring applied current during Bulk Current Injection (BCI) conducted immunity testing.

Typical insertion loss and transfer impedance vs frequency for Current Sensing Probe

Title Link
CLCE-227 Datasheet View PDF


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