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The inexpensive unit is suitable for use by trained personnel where they can pick up liquid nitrogen from a 10- liter Dewar at a depot, and use it the same day. This Dewar comes in a container that fits onto a vehicle's ‘jerry can’ holder.
Overcomes the limitations of any mini OTDR or Optical Time Domain Reflectometer when used to accurately find an event. Locate the exact physical position of a hidden underground cable fault or break, within less than 1 meter, and over long distance!