9332 Series of high current resistors fans

The Measurements International 9332 series of high current resistors from 10A to 3000A with optional air moving fans

MI 9332 Standard DC Current Shunt

  • Low temperature coefficients
  • Controlled current distribution
  • For use in air
  • Fan assembly option for forced air
  • Low power coefficients
  • Based on NMI design with controlled current distribution
  • Stability < 10 x 10-6 long term
  • Air or oil cooled applications
  • Special values available on request
  • Implanted thermocouples
  • Improved power dissipation

The model 9332 series of four terminal DC current shunts for the measurement of precision DC current levels to 3000A are the latest development from Measurements International. Only after many years of research in low value resistance materials, the model 9332 series of standard DC current shunts insures the best performance available today. Combined with MI’s experience in automated measurements at high current levels, accuracies less than 0.01% can be achieved at full power.

The shunts are constructed from specially selected elements which are soldered into copper ends using a special low thermal solder. The element then goes through a process of annealing which insures the best performance without introducing self-heating errors with improved temperature coefficients. The shunt, designed to operate in air at full power, is then covered with a decorative perforated cover allowing air to escape during self heating and to protect the elements from physical damage. The copper ends are specially designed to force the current to be evenly distributed through the elements so that the surface area can dissipate the specified power in air.