The FLUXUS F721TE is specially designed for heating and cooling Thermal Energy measurement, with all measurements – Flowmeter, Temperature, and BTU computer, contained in one device. Temperature and BTU calculations are done in accordance with EN 1434 Thermal Energy meter standard.
Like all measuring systems of the FLUXUS series, the F721TE measures the volumetric flow rate non-invasively via its clamp-on ultrasonic transducers. Simultaneously, temperature probes monitor the temperatures at the supply and return lines of the heating or cooling system - either non-invasively with clamp-on sensors or by use of insertion temperature probes.
From the temperature difference as well as the measured volume flow rate and on the basis of the physical media parameters (liquid enthalpy data stored in the meter), the heating or cooling performance is calculated.
Further, the F721TE can also be equipped with two measurement channels to:
- Simultaneously measure two pipes e.g. chilled and hot water submetering in a building, two chillers at the chiller plant, etc.,
- Allow for a complete monitoring of a chiller – chilled water and condenser water,
- to allow accurate measurements even at locations that have very little straight run – dual mount on one pipe averages profile disturbance.
An important advantage of the FLUXUS F721TE lies with its very high zero point stability and unrivalled accuracy even at very low flow rates.
In submetering it is necessary to capture very low flow rates during off peak seasons – like hot water delivery to a building in the summer months – or this becomes free energy.