Magnastart® Energy Meter Model EMM-1

Overview and features

This Energy Meter is designed for measuring the energy output of Magnastart® type Shot Exploders on a large liquid crystal display, which is easily read in both daylight and poor lighting underground.


  • When the Energy Meter is switched ON, it will automatically reset to zero. The Magnastart® Exploder is then connected in series to its maximum load and to the EMM-1 by means of a Magnastart® toroid; the primary circuit being looped once through the toroid with the secondary loop directly connected to the EMM-1.
  • The LCD will display the energy output of the Magnastart® Exploder under maximum load conditions in milli-Joules per Ohm (mJ/Ω).
  • Should the energy output be below that specified by the manufacturer, the Magnastart® Exploder must be returned to the manufacturer for repair.
  • The unit is powered by a replaceable PP3 9V Zinc Carbon battery and is capable of 15 hours of continuous use.

Notice and Maintenance

  • All service work to be performed by authorized AEC Electronics personnel only.
  • Not approved for use in fiery mines.
  • Energy Meter should only be opened to replace PP3 9V Zinc Carbon Battery.
  • Exposure to temperatures above 60OC will cause permanent damage to the liquid crystal display


For full specifications and more information, please download the datasheet for this product.
Download Datasheet