The History of RADIAN RM-10
In 1985, Radian Research began production of its first product, the RADIAN Metronic RM-10 Portable Watthour Standard.
The RM-10 provided specific innovative features, developed by Glenn Mayfield, which improved accuracy, enhanced testing efficiency, and provided greater safety. The Radian RM-10 was the first energy metering instrument in the world to provide a wide range auxiliary power input AND an auto-ranging voltage input. These innovations by Glenn Mayfield dramatically changed the technology of energy meters and reference standards made by all manufacturers of such products around the world.
Auto-ranging inputs for current (0 to 50 amps), voltage (60 to 600 volts), and auxiliary power (80 to 600 volts) made it impossible to damage the unit by applying a signal to the wrong tap. A true watthour display with a Kh of 1 on all ranges allowed for a much simpler energy meter error calculation. Remote digital display gating eliminated the need for switching the potential while further enhancing accuracy.
With its high accuracy, innovative features and a weight of only 5.5 pounds, the RM-10 soon became the number one selling watthour standard in North America.
