Personal EMF monitor - H-field from DC to 400 kHz: WaveMon LF-400 | Wavecontrol

The WaveMon LF-400 is a personal EMF monitor designed for magnetic field exposure monitoring from DC to 400 kHz. It is intended for workers and technical personnel operating in environments where low-frequency magnetic fields may represent an occupational or public exposure risk.

The device combines isotropic RMS and peak magnetic field sensing, a built-in EMF exposimeter, overexposure alarms and an integrated datalogger. It can be worn using a harness, belt or arm holder, allowing continuous personal monitoring during field operations.

The WaveMon LF-400 includes visual, audible and vibratory indicators and displays the exposure level as a percentage of the selected standard or limit. Optional GPS and altimeter functions support geolocated exposure studies.

Benefits

• Personal low-frequency EMF protection: designed for continuous H-field exposure monitoring from DC to 400 kHz.
• Isotropic magnetic field sensing: uses isotropic Hall sensors for DC and isotropic coils for the 10 Hz to 400 kHz range.
• Overexposure warning: high-intensity audible and vibratory alarms alert the user when adjustable limits are reached.
• Exposure percentage display: LED indication shows exposure level as a percentage of the selected standard or limit.
• Datalogger function: stores more than 1,000,000 events for exposure assessment and documentation.
• Configurable operation: logging interval adjustable from 1 second to 60 minutes.
• Optional geolocation: GPS and altimeter options support location-based exposure studies.
• Portable wearable format: compact IP54 housing with rechargeable and replaceable AA NiMH batteries.

Key features

• Measured field: magnetic field, H-field.
• Frequency coverage: DC and 10 Hz to 400 kHz.
• DC sensor type: isotropic Hall sensors.
• 10 Hz to 400 kHz sensor type: isotropic coils.
• DC response and limits: percentage indication for AIMD bearer, medium warning and high warning thresholds.
• 10 Hz to 400 kHz response: shaped percentage response for worker and public exposure limits.
• DC dynamic range: 100 µT to 40 mT.
• 10 Hz to 400 kHz dynamic range: 3% to 200% for worker limits and 10% to 300% for public limits.
• Isotropic deviation: ±2% for DC and ±5% from 10 Hz to 400 kHz.
• Indicators: 6 LEDs, audio alarm and vibration alarm.
• Alarm threshold: two limits adjustable by the user.
• Connectivity: waterproof USB for data download, charging and parameter configuration using the included PC software.
• Falling detection: integrated fall detection function.
• Autonomy: 12 hours.
• Battery type: 2 x AA NiMH batteries rechargeable by USB.
• Protection rating: IP54.
• Temperature range: -20 °C to +50 °C.
• Dimensions: 174 x 42.5 x 33 mm.
• Weight: 194 g.
• Software: data downloading and parameter configuration, compatible with Windows 7 or later.

Typical applications

• Worker safety: personal monitoring of low-frequency magnetic field exposure in occupational environments.
• Railway: exposure monitoring for personnel working near traction systems, rolling stock or railway infrastructure.
• Medical environments: monitoring magnetic field exposure in areas where personnel or AIMD bearers may require specific attention.
• AIMD bearer protection: monitoring against limits relevant to active implantable medical devices.
• Energy sector: personal exposure assessment near electrical installations and power infrastructure.
• Industry: monitoring workers exposed to magnetic fields generated by industrial processes or equipment.
• Laboratories and defence: low-frequency EMF exposure monitoring during technical, test or operational activities.

Why choose WaveMon LF-400

The WaveMon LF-400 is designed for organizations requiring a wearable and configurable monitor for low-frequency magnetic field exposure. Its DC to 400 kHz coverage makes it suitable for environments where magnetic field exposure may come from power systems, railway installations, industrial equipment or specialized technical facilities.

By combining real-time warning, exposure percentage indication, datalogging and optional GPS/altimeter functions, the WaveMon LF-400 supports both immediate personnel protection and documented exposure studies. The availability of versions aligned with EU, ICNIRP and IEEE limits allows the monitor to be selected according to the applicable exposure framework.