Specifications include, but are not limited to: 1.1 General Description 1. The flow meters shall provide for long-term measurement campaigns in the field. These heavy-duty flow meters can be installed without process interruption and the installation can be completed within a few minutes. Thereafter, it delivers accurate and highly repeatable measurements that are not affected by drift. Due to its excellent low flow capability (down to 0.03 ft/s), it is ideally suited as a drinking water flow meter, in which low flow velocities are common. The strong signal output and the noise suppression technology make it possible to use on very large pipes. 2. The clamp-on ultrasonic systems determine the volume flow according to the transit-time difference method. Since the ultrasonic signal that is irradiated into the pipe is carried by the medium flowing inside, a time delay occurs between the acoustic transit time both with and against the flow of direction. This time delay can be measured very accurately. The measuring transmitter calculates the volume flowrate based on the parameters input for the pipe geometry and the physical properties of the medium stored in the internal database. 3. Ultrasonic transducers mounted on the outside of the pipe do not suffer wear and tear by any media and cannot become clogged by any particles. 1.2 Transmitter (Quantity: 2) • Part Number: DE7-F721GP-NNNNN-2AL1-NN.CS2.MO3/FVA FLUXUS F721**-NN0*A • Preferred version: F721 Basic • [F] Measurement of liquid: Type: 721 • [GP] General purpose • [NN] No explosion protection • [N] Non-intrinsically safe [NN] No certificates • [2] Measuring channels: 2 • [AL] Housing: aluminum, metric • [1] Power supply: 100...230 V/50…60 Hz • [NN] No communication module Outputs
