Controlotron's clamp-on, non-intrusive 1010E Energy Meters are designed for energy distribution monitoring and the immediate analysis of energy efficiency with a real-time COP for HVAC systems, the company says. Real-time kW/Btuh and kW/gpm use Transit Time flow detection, precision matched RTDs, zero drift temperature circuitry, specific heat values, built-in energy/Btu mode, and additional features to accommodate a variety of thermal energy metering needs, says the manufacturer.

Controlotron Corp., 155 Plant Avenue, Hauppauge, NY 11788; 631-231-3600; 631-231-3334 (fax);;