Portaflow 333 Portable Clamp-on Flow & Heat Meter

Portable, non-invasive ultrasonic meter that measures liquid flow and hydronic energy from outside closed pipes, with no process interruption.

Key features

Heat/energy calculation per EN 1434 section 6
Six selectable languages
CE approved

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Accuracy	+/-0.5 to +/-2 % of reading (pipe ID > 75 mm); +/-2 % (13-75 mm)
Pipe size	A 13-115 mm OD; B 50-2000 mm OD
Temperature sensing	Pt100 Class B, 4-wire
Outputs	pulse/frequency; 4-20 mA
Power	110-240 V AC or NiMH battery (~14 h)
Display	64 x 240 graphic
Logger	100,000,000 points, 12 sites, USB CSV

Heat/energy calculation per EN 1434 section 6
Six selectable languages
CE approved

Ultrasonic clamp-on transducers send and receive ultrasonic signals through the pipe wall. The cross-correlation transit-time method compares the signals travelling with and against the flow; the time difference is proportional to flow velocity, from which the flow rate is calculated without contacting the liquid. Two clamp-on Pt100 sensors measure supply/return temperature and the heat energy is calculated per EN 1434.

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