AUF790 Series

AUF790 Series

AUF790 Series is a fixed mounted, Open Channel ultrasonic flowmeter, with clamp-on transducer used for non-invasive measurement. Our microprocessor based, user friendly, field programmable flow measurement technique allows no interruption of the process flow and has low installation costs.








  • 4 line LCD display with flowrate, totalizer & Level condition
  • V-notch, rectangular with and without end contractions, Cipolletti.
  • Parshall, Palmer-Bowlus, Leopold-Lagco, trapezoidal, H.
  • A sampler relay will signal your sampler to collect flow proportion
  • High accuracy of +/-0.25% of Full Scale
  • Non-contact flow measurement
  • Exclusive sensor for open channel flow
  • Response time less than 1 second


Measuring Principle: Low Level Cutoff:
Ultrasonic Sound 0.000 ~ 1.000  Meter
Measuring Range: Dead Band:
Level 0.35 M Max. 
0-3 Meter Bean Angle:
Flow Rate 6 o
0-120000 m3/s Keypad:
Accuracy: 4 Key with tactile action
+/-0.25% of Full Scale Response Time:
Repeatability: Less than 1 second
+/-0.1% of reading Ambient Temperature:
Material: -20 ~ +60 oC
Ultrasonic Tube Mounting:
ABS G2″ (Standard) / Flange end (Optional)
Sensor Head Max. Cable Length:
Polyurethane (Standard) / ETFE / PTFE 50 M
Housing Power Consumption:
ABS (Separate Version) Less than 3W
Low copper cast aluminum alloy with Power Supply:
polyurethane (Compact Version) 90 ~ 260Vac, 50/60 Hz (4wires)
Display: 18-36Vdc (4wires)
4 Line LCD with illumination  Data Storage:
Flowrate Operation parameters and totalization 
9 digits with decimal point date are stored by EEPROM for more
Totalizer than 10 years
9 digits Output:
Level 4-20 mA
4 digits Load
Flow Engineer Unit Rohm=(Vdc-12)*50 W
M3, Liter Alarm:
Level High/Low/High-High/Low-Low
Meter / Feet Communication:
Time Unit RS-485 (modbus)
Second, Hour Dimensions:
Other Compact
Signal condition 130mm (W) *230mm (H) *180mm (D)
Formula: Separate
V-notch, Parshall, Palmer-Bowlus 183.5mm (W) *218mm (H) *125.5mm (D)
rectangular, Cipolletti, Leopold-Lagco Weight:
Sensor Frequency: 3.5 Kg (compact), 2.2 Kg (Separate)
40KHz / 1KHz Enclosure:
Temp Compensation: IP65 (ABS) / IP67 (Aluminum Alloy)
Built-in to compensate over temperature Explosion Proof, EX d (ia) II B T4