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- Operating Frequency:DC – 30MHz;
- Number of turns per coil: 20;
- Total Resistance: 0.35 Ω;
- Total Inductance: 1.5 mH;
- Resonant Frequency: >150 KHz;
- Rated Current:16A;
- Short Term Current: 20A;
- Type of wire: Litz-AWG 32 X 80 Strands;
- External Dimensions: 300x285x300h mm;
- Internal Dimensions: 230x285x230h mm;
- Specifically designed for PMM EHP 50 series Electro Magnetic fields sensors calibration and periodical verification;
- Usable with different interchangeable fixtures it is compatible with any EM field sensor;
- Ideal to test immunity of small devices according to industrial, automotive standards and to IEC 61000-4-8 or MIL STD 461;
- Engineered and completely manufactured in Italy;
- High resistance polycarbonate body;
- Unique compact space-saving design;
- Wideband up to 30 MHz;
- High field reachable with low power input;
- Excellent quality.
- Not Available
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The Helmholtz-Coils are especially designed to generate precisely defined magnetic fields from DC to the upper end of the audio frequency range and beyond.
The generated fields are in a strongly linear relation to the coil current. The fieldstrength can be calculated exactly by analytical (or numerical) methods,
based on the coils' geometry, the number of turns and the coil current.
Therefore the EMC HLM-05 is ideally suited for the calibration of magnetic field probes or sensors. Due to the high temperature proof wire packet it is possible to generate magnetic fields up to approx. 3000 A/m for short times.
When generating magnetic fields with Helmholtz coils the coil current is directly proportional to the magnetic fieldstrength. The calibration of the magnetic field is finally traceable to a current measurement (or to a voltage drop at a known resistor). The Helmholtz Coil itself does not require a calibration. Alternatively a small loop sensor can be used to determine the actual fieldstrength.
Product Installation:
The Helmholtz-Coils should be installed on a desk in a sufficiently large separation from sources of unintentional magnetic fields, e.g. transformers in power supplies, conductors carrying high currents, computer monitors, loudspeakers, cathode ray tubes (CRT) and more.... All kind of magnetic material (e.g. steel, Nickel, Cobalt) should be removed from the near surrounding of the coil. The wires which are used to connect the current source with the Helmholtz-Coil should be twisted to avoid an unwanted injection of magnetic flux. The coil terminals are assigned with RED and BLACK banana sockets. The generator (current source, audio-amplifier...) is connected to those terminals.Запросите сейчас сметную стоимость.
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Helmholtz Coil - EMCTEST - Mod. EMC-HLM-05.pdf
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