Isotropic electric field probe - 1 MHz to 40 GHz: WPF40 | Wavecontrol

The WPF40 is an isotropic electric field probe designed for RF exposure assessment from 1 MHz to 40 GHz. It provides True RMS electric field measurement for professional EMF surveys, telecom audits and occupational exposure evaluations.

Based on isotropic RMS diode technology, the WPF40 offers a flat frequency response, a 60 dB dynamic range and excellent attenuation at 50/60 Hz. It is designed for measurements performed in accordance with international standards and is compatible with SMP2, MonitEM and MapEM platforms.

Benefits

• Wide RF coverage: electric field measurement from 1 MHz to 40 GHz.
• Isotropic True RMS measurement: supports reliable field assessment without directional alignment constraints.
• High dynamic range: 60 dB dynamic range for field measurements across varied exposure levels.
• Excellent low-frequency rejection: attenuation greater than 40 dB at 50/60 Hz.
• High field capability: measurement range up to 1000 V/m in CW mode, with 1200 V/m CW damage level.
• ISO 17025 calibration: supplied with ISO 17025 accredited calibration under ILAC recognition.
• Compact field probe: 95 g probe weight for practical portable measurement campaigns.

Key features

• Frequency range: 1 MHz to 40 GHz.
• Measured field: electric field.
• Sensor type: isotropic RMS diode technology.
• Frequency response type: flat.
• Measurement range: 1 to 1000 V/m CW and 1 to 55 V/m RMS.
• Dynamic range: 60 dB.
• Sensitivity: 1 V/m.
• Frequency response: ±2 dB from 2 MHz to 17 GHz, ±3 dB from 17 GHz to 40 GHz, and -3 dB at 1 MHz.
• Linearity: ±2 dB from 1 to 2 V/m and ±1 dB from 2 to 250 V/m.
• Isotropic deviation: ±1 dB below 12 GHz and ±2 dB from 12 GHz to 40 GHz.
• Damage level: 1200 V/m CW.
• Calibration: ISO 17025 accredited calibration, ILAC.
• Calibration period: 24 months recommended.
• Temperature range: -20 °C to 50 °C.
• Temperature response: +0.1 / -1 dB, related to 20 °C.
• Dimensions: 28.4 cm x 6 cm diameter.
• Weight: 95 g.

Typical applications

• Telecommunications: certification and audit of telecommunication services including GSM, 3G, LTE, TDT, FM and WiFi.
• Industry: assessment of industrial processes for worker RF exposure protection.
• Defence: assessment of military sites and personnel exposure protection.
• Laboratories and R&D: RF exposure protection for R&D and laboratory personnel.
• EMF compliance measurements: broadband electric field surveys requiring coverage up to 40 GHz.

Why choose WPF40

The WPF40 is suitable for technical teams requiring a professional electric field probe for RF exposure assessment across a broad frequency range. Its 1 MHz to 40 GHz coverage supports measurements across common telecom, industrial and laboratory RF sources.

With True RMS isotropic measurement, 60 dB dynamic range and ISO 17025 accredited calibration, the WPF40 supports repeatable and standards-oriented field measurements. Its compatibility with SMP2, MonitEM and MapEM allows integration into portable measurement workflows and monitoring applications.