EMC Item no.: 312
  • DEF STAN 59-411
  • Antennas / Near Field Probes
  • Low Frequency Magnetic Field
Test Mode: Immunity
Test Type: Radiated
Manufacturer: EMC Hire

There is a minimum 3-day hire period

Product description

Model 6402 Helmholtz coil system has twin 0.6 metre (2ft) diameter coils in a Helmholtz configuration and normally used as a Magnetic Field Immunity Test System or simply a low frequency magnetic field calibrator. 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 it’s 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 at 50Hz. For the end user’s convenience NPL have also quoted a figure of uTesla per millivolt as measured across an installed shunt resistor with measuring terminal placed at the base of the Helmholtz. This was done at 60Hz and 2kHz.


General specification

Amperes/ Meter/ Ampere 84.3
Gauge (AWG) 10
Gauss/Ampere 1.06
Number of Turns 36 per coil
Radius 30.5 cm
Total Inductance (H) 3.3 mH
Total Resistance (Ω ) 0.5 Ω
TypeMaximum Continuous Field Monaxial Helmholtz Coil21.2 Gauss