• Barge Loading of Hydrocarbon Products
  • Dewatering of Storage Tanks
  • Flow Measurement and Media Detection in Storage Stations
  • Pipeline Check Metering
  • Pipeline Leak Detection
  • Product Pipeline metering
buhpi - en-gb.pdf
Adobe Acrobat Document 1.2 MB


  By combining the attributes of FLEXIM’s highly accurate and reliable non-invasive ultrasonic flow measurement with temperature and, where necessary, pressure inputs, the integrated FLUXUS HPI flow meter is the ideal solution for hydrocarbon flow metering and media detection / identifcation applications, where the fluid viscosity can significantly vary over the temperature range.

The FLUXUS HPI flow meter allows to report:

  • Operational and standard (net) volume and mass flow
  • Density, API number and Specific Gravity
  • Sonic ID (for Interface Detection)
  • Liquid ID (for Fluid Identification)
  • Leak detection (data source based on multiple HPI flow meters)

FLEXIM’s FLUXUS HPI flow meter eliminates measurement errors associated with multiple devices at various places and provides a complete turn-key solution to your flow metering needs.


Cutting-edge Features of FLEXIM's ultrasonic non-intrusive flow measurement

  • Automatic Fluid Identification and Interface Detection
  • Bi-directional flow metering
  • Superior temperature stability - No zero drift
  • Certified and traceable Multi-Point wet flow calibration
  • Robust “Fit for Purpose” Flexibility and Stability using PERMALOK mounting fixtures
  • Operational capabilities from –40 °C up to +200 °C
  • Extremely high turndown range - capability of measuring at very low flow rates


Quantities of measurement:    Operational and standard volume and mass

                                                              flow, Flow velocity, Sound speed, Customized

                                                              Fluid Identification (Liquid ID)

Quantities of measurement:    Automatic Interface Detection (Sonic ID, Sonic

                                                             ID Slope), Base Density, API# and Specific Gravity

Flow velocity range:                    0.03 to >75 ft/sec 

                                                             0.01 to 25 m/s

Repeatability:                                0.15% of reading +/- 0.03 ft/s 

                                                            0.15% of reading +/- 0.01 m/s

Measurement accuracy

NIST/PSB traceable wet flow:+/- 1% of reading +/- 0.03 ft/s / 0.01 m/s 

With field calibration**:            +/- 0.5% of reading

Data logger capacity:                 >100 000 meas. values - stores about 2 months of

                                                            data at a 15 min storage rate

Outputs:                                          Modbus RTU, HART analog 4 ... 20 mA, 0 ... 10 V,

                                                            pulse , other protocols available

Output data:                                  All quantities of measurement

Additional Notes: * for measurement acc. to the transit time difference principle, under reference conditions and at v > 0.03 ft/s / 0.01 m/s

Additional Notes: ** reference uncertainty <0.2%

Additional Notes: Flow metering of hydrocarbon products (Temperature measurement with clamp-on temperature probes (if used))