Area Velocity Flow Meter

General:-
1.Flow Monitor to consist of a submersible ultrasonic sensor, connecting cable, and remote enclosure with indicating, transmitting and controlling electronics.
2.Level measurement accuracy shall be A 0.25% of Range. Velocity measurement accuracy shall be A 2% of reading.
Sensing Element:-
1.Ultrasonic sensor shall be rated IP68 for continuous submersion in liquids.
2.Using the Doppler principle, the sensor shall measure fluid velocities from 0.1 to 20 ft/sec (0.03 to 6.2 m/sec) and reverse flow to -5 ft/sec (-1.5 m/sec). The fluid shall contain bubbles or solids with a minimum size of 100 microns and a minimum concentration of 75 ppm to act as acoustic reflectors.
3.Using ultrasonic echo-ranging principle, the submerged sensor shall measure liquid level from 1" to 15 ft. (25.4 mm to 4.57 m).
4.Level sensing circuitry shall include a temperature sensor for automatic temperature compensation.
5.Sensor operating temperature shall be 5A F to 150A F (-15A C to 65A C).
SENSOR CONNECTING CABLE:-
1.Provide minimum length 25 ft (7.6 m) tri-coaxial cable with potted bond to the Sensor head. Sensor cable shall be waterproof and electrically shielded. Exposed material shall be polyurethane only.
Transmitter:-
1.Electronics shall be surge protected on AC power input, sensor and 4-20mA outputs.
2.Display indicating flow rate, units of calibration, totalizer and relay states shall be visible without opening cover.
3.Wall-mount, watertight NEMA4X (IP66) enclosure