Measurement, Control & Protection for 

Electro-Processes and High Power Conversion

Building on the knowledge of Halmar, and LEM, DynAmp has a unique understanding of high current applications with over 60 years of experience. This experience, combined with the latest technology, enables DynAmp to provide the most accurate, reliable and cost-effective power conversion and process monitoring systems available to industry.

Our unique experience and know-how equipped us to develop OLOP measurement technology utilized in our next generation LKAT systems. Our 8-year effort to develop truly industrialized fiber optic current measurement technology yielded our LKCO systems which utilize patented, fully compensated and completely closed loop performance. With over 15,000 systems installed around the world we are the global leader in high power conversion and process monitoring.

We truly understand why energy intensive processes need to increase efficiency, objectively compare multiple plants as well as protect and control power conversion equipment.

1961Mr. Haley and Mr. Martin found Halmar Electronics

1963Halmar introduces DynAmp line of high current measurement products

1985LEM, a manufacturer of small DC current sensors, introduces systems >10kA

1989Robicon acquires Halmar

LEM DynAmp1992LEM acquires the “DynAmp” product line from Halmar-Robicon and establishes LEM DynAmp

2003Existing management buys LEM DynAmp establishing DynAmp, once again a privately owned, independent business.

DynAmp, LLC
3735 Gantz Road
Grove City, OH, 43123, USA
Tel: (+1) 614-871-6900
Fax: (+1) 614-871-6910


Copyright 2020 DynAmp, LLC
All Rights Reserved
( formerly Halmar and LEM DynAmp )
To visit LEM Group, click here
Updated: March 2020