The DN-EM Energy Flow Monitor provides a low cost solution to applications in energy transfer and in heating and cooling systems, such as heating and cooling loops, heat recovery applications, condensate recovery applications, efficiency measurement and verification systems, solar or geothermal systems, and more. Monitors calculate energy use based on the mass and volume of liquid passing through the system and the difference in temperature between the supply and return lines. The volume of liquid is measured by means of a pulse-generating, vortex flow transmitter. An RTD sensor built into the flowmeter measures temperature at the meter, and the remote temperature is measured by means of a precision RTD sensor mounted in a pipe tee. A scaled-pulse output is provided and can be configured to report volume flowrate, mass flowrate or total energy. Monitors are designed for flow ranges from 0.9 to 22.5 gpm, ½ or ¾ in. piping, and ambient temperatures of –15 to 85°C. — Clark Solutions, Hudson, Mass.
Scott Jenkins