ULTRASONIC VELOCITY SENSOR

The SOMFLOW continuously measures the water or effluent velocity in ducts, pipes and open canals in sewer networks, water treatment plants and industrial facilities. The twin 1-MHz ultrasonic Doppler transceiver determines flow velocities from as low as 0.01 m/s to 5 m/s.

FEATURES

• Flow velocity range 0.01 … 5 m/s
• Versatile installation options
• Waterproof housing that is resistant to aggressive liquids
• Simple integration into existing data acquisition and control systems
• Easily linked to data loggers
• Multiple data interfaces: RS-485, Modbus RTU, SDI-12

SPECIFICATIONS

• Measurement range Bi-directional 0.01 to 5 m/s (0.03 to 16.4 ft/s)
• Accuracy ± 2 % of reading if V ≥0.5m/s (1.64 ft/s)± 0.01 m/s (± 0.03 ft/s) if V<0.5m/s (1.64 ft/s)
• Resolution 1 mm/s (0.003ft/s)
• Minimum fluid level 5 mm (0.59 in) to 20mm (0.79in) above base of sensor, provided transducers fully wetted
• Immersion up to 1 bar
• Protection rating IP68
• Principle Doppler sensor using twin 1 MHz transducers
• Output RS-485, Modbus RTU, SDI-12 (flow velocity, temperature, quality, diagnostics)
• Power supply 9 to 28 VDC
• Power consumption standby 14 mA, measurement 25 mA (@12 VDC)
• Operating temperature -20 to +60 °C (fluid non-freezing)
• Storage temperature -20 to +70 °C
• Size L x B x H 122 x 46 x 19 mm
• Weight 1.1 kg (incl. 10-m cable)
• Material PVDF, polyurethane, 316 Stainless steel