StarFlow QSD Flow Meter

Monitoring water velocity, depth and temperature of water flowing in rivers, streams, open channels and large Pipes, the Starflow QSD uses this information to calculate flow rate and total flow.

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Advantages

  • Robust, reliable and easy to use absolute sensor
  • Range of up to 10 m
  • Sealed against water ingress
  • Low maintenance, low power, no calibration and no complicated power arrangements required
  • Uses ultrasonic Doppler Principle in Quadrature Sampling Mode to measure water velocity
  • Incorporates ultrasonic depth sensor and an absolute pressure depth sensor
  • Works with barometric pressure sensors
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StarFlow QSD Flow Meter

Call Van Walt
+44 (0) 1428 661 660 Call Van Walt
+64 (0)3443 5326 Call Van Walt
+27 21 518 1347

StarFlow QSD Flow Meter Equipment Options:

Applications

  • Automated Water Quality & Flow
  • Irrigation channel measurement & control
  • Flood monitoring / flood alerts
  • Rivers & streams monitoring
  • Surface water monitoring
  • Industrial outflow monitoring

Specifications

Physical Specifications
Material
Epoxy-sealed body, Marine Grade 316 Stainless Steel Mounting Bracket
Size
135 mm x 55 mm x 22 mm (LxWxH)
Weight
1 kg with 15 m of Cable
Operating temperature
0°C to 60°C water temperature
Velocity and Depth Specifications
Velocity Range
20 mm/s to 0.8 m/s
20 mm/s to 1.6 m/s in one direction (default)
20 mm/s to 3.2 m/s
20 mm/s to 13.2 m/s
Bidirectional velocity capability, set using configuration tools
Velocity Accuracy
±1% typical
Depth Range Ultrasonic Sensor
20 mm up to 5 m above top surface of the instrument
40 mm up to 5 m from the base of the instrument
Depth Accuracy Ultrasonic Sensor
Typical ± 1%
Depth Range Absolute Pressure Sensor
0 to 10 m
Depth Accuracy Absolute Pressure Sensor
Typical ± 0.19% for 0 m to 5 m range
Typical ± 0.38% for 0 m to 10 m range
Temperature
0°C to 60°C
Temperature Resolution
0.1°C
Flow Computation
Flow rate, totalised flow with companion NRT/NRL
Channel type
Pipe, open channel, natural stream
Conductivity (6537 Only)
0-200,000uS/cm Typically ±1% of measurement, returned either as 16-bit value (0 65535uS/cm) or 32-bit value (0-262,143uS/cm)
Compensation Conductivity (6537 Only)
25°C default / set using configuration tools
Cable
15 metre, 6 way
Cable Options
User specified up to 50 metres
Electrical Specifications
Power Source Typical
External Battery 12V – 24V DC
Power Usage
10V to 24V DC, 50µA standby, 100mA active for 1 sec
SDI-12
SDI-12V 1.3 recorder (1200 baud smart instrument channel)
RS 485
Modbus RTU

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+44 (0) 1428 661 660 +64 (0)3443 5326 +27 21 518 1347