EMCH 6403-2 Helmholtz Coil 90cm Diameter 60 Turns

EMC Item no.: 315
  • DEF STAN 59-411
  • EN-61000-4-8 : Magnetic Immunity
  • Antennas / Near Field Probes
  • Low Frequency Magnetic Field
Test Mode: Immunity
Test Type: Radiated
Manufacturer: EMCO

There is a minimum 3-day hire period

Product description

Model 6403 Helmholtz coil system has twin 0.9 metre (3ft) diameter coils in a Helmholtz configuration and is normally used as a Magnetic Field Immunity Test System or simply a low frequency magnetic field generator.

A magnetic field is produced by two coils that is essentially homogenous throughout the volume between the face of the coils and one-third diameter of the coils at its centre. The coils are supported by a non-metallic framework.

A rotating, height-adjustable pedestal is capable of holding articles weighing up to 15kg.

The Coil has been initially calibrated at the NPL in terms of uT/amp with DC. For the end user’s convenience NPL have also quoted a figure of uTesla per millivolt as measured across an installed monitor point including a shunt resistor with measuring terminal placed at the base of the Helmholtz. This was done at 50Hz and 2kHz.


General specification

  Frequency Range   DC to 2kHz
  Output connector   2off 4mm Banana Plugs
  Coil Factor    118.55uT/Ampere
  Wire Gauge (mm)   2
  Number of Turns   60 per coil
  Radius   45.5 cm
  Total Inductance (H)   18.39 mH
  Total Resistance (Ω)   2.87 Ω
  Maximum Continuous Current  15A