Isotropic magnetic field probe - DC to 40 kHz, True RMS measurement: WPH-DC | Wavecontrol

The WPH-DC is a magnetic field probe designed for measurements from DC to 40 kHz. It uses a triaxial Hall sensor and provides isotropic measurement for static fields, time-variable fields and combined AC + DC magnetic field environments.

The probe is compatible with SMPx display units and supports field measurement, time-domain display and spectrum analysis functions. It is intended for technical measurements where DC and low-frequency magnetic fields must be assessed with defined measurement ranges and traceable calibration.

Advantages

• Frequency range from DC to 40 kHz for static and low-frequency magnetic field measurements.
• Isotropic measurement using a triaxial Hall sensor.
• True RMS measurement for AC magnetic field evaluation.
• DC, AC and AC + DC measurement modes for different field conditions.
• FFT mode for real-time spectrum analysis up to 40 kHz.
• Compatible with SMPx instruments for display, logging and measurement operation.
• ISO 17025 ILAC-ENAC accredited calibration, with a recommended recalibration period of 24 months.

Main characteristics

• Part number: WWP1501
• Frequency range: DC, 0 Hz to 40 kHz
• Field type: Magnetic field
• Sensor type: Triaxial Hall sensor
• Selectable bandwidths: Low, DC to 20 kHz; Full, DC to 40 kHz
• Measurement range: 10 µT to 10 T for DC to 150 Hz
• Overload / damage level: 20 T
• Dynamic range: > 120 dB
• Frequency response: ±1.5% from 0 Hz to 30 kHz; +3% at 40 kHz
• Noise level: < 5 µT
• Isotropy: < 3%
• Temperature deviation: 0.002 dB/°C from -15 °C to +50 °C
• Linearity: 0.6% from 100 µT to 1 T; 1% from 100 µT to 2.4 T; 0.5% from 30 µT to 2000 µT at 50 Hz
• Typical expanded uncertainty: < 4.5% / < 0.38 dB
• Operating temperature: -20 °C to +55 °C
• Storage temperature: -30 °C to +75 °C
• Relative humidity: 5 to 95%, non-condensing
• Weight: 90 g
• Probe dimensions: 273 x Ø 21 mm; sensor stick Ø 9.4 mm
• Data communication: USB-C cable and fiber optic cable with optical converter to USB
• Calibration: ISO 17025 ILAC-ENAC accredited calibration

Measurement functions

• DC range: 0 Hz to 1 Hz, with low-pass FIR filter cut-off at 1 Hz (-3 dB).
• DC result type: Total static field, instantaneous, maximum, minimum, average and axis information.
• AC range: 1 Hz to 40 kHz, with high-pass IIR 2nd order filter at 1 Hz.
• AC + DC range: DC to 40 kHz, without filter.
• AC result type: RMS, Peak, FFT and axis information.
• Available units: µT, mT, T, mG, G and A/m.
• Reading update time: 500 ms, with selectable options for log time.
• Graphical display: Total field value time plot for instantaneous and average field values versus time.

Typical applications

• Medical environments: Magnetic resonance installations in hospitals.
• Energy systems: DC generators, DC motors and related installations.
• Industrial applications: Low-frequency industrial equipment, magnetizers and electrolysis systems.
• Railway environments: DC-powered railway systems.
• Automotive: Electric vehicle magnetic field measurements.
• Strong magnets: Permanent magnets and heavy-duty magnetic lifters.
• Worker safety: Magnetic field exposure assessment, including environments involving pacemakers and other AIMDs.

Why choose WPH-DC

The WPH-DC provides a defined measurement solution for DC and low-frequency magnetic fields from DC to 40 kHz. Its triaxial Hall sensor, isotropic response and True RMS measurement capability allow the probe to be used in technical environments where magnetic field level, axis information and frequency content must be evaluated.

The probe supports static field measurements, AC measurements, combined AC + DC measurements and FFT analysis. With ISO 17025 ILAC-ENAC accredited calibration and compatibility with SMPx instruments, the WPH-DC is suitable for laboratory, industrial, medical, railway, automotive and occupational safety measurement applications.