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BELUGA0 pages
BELUGA™
Open Channel Ultrasonic Digital
Doppler Flow Meter Sensor
The BELUGA™ is the newest ultrasonic Doppler area/velocity flow
meter sensor for open channel flow measurements from Flow-
Tronic. The new sensor combines advanced digital Doppler
ultrasonic velocity sensing technology with most modern and
powerful DSP processor technology allowing real-time spectral
analysis of the velocity distribution through the cross-sectional area.
Use the BELUGA™ in combination with the RTQ flow logger series
for portable monitoring and for permanent monitoring with the IFQ
Monitor or UNI-TRANS™ which display flow rate, velocity, level
and much more.
Technical Specifications
Velocity Measurement
Method Ultrasonic Doppler
Frequency
Range
Accuracy
Resolution
Zero Stability
1 MHz
-2 to +6 m/s
better than 1 %
(according to hydraulic and installation
conditions compliance)
0,001 m/s
0,01 m/s
Optional Combined Level Measurement (Ultrasonic)
Method
Range
Accuracy
Temp. Error
Resolution
Ultrasonic pulsed echo
0,00 to 1,75 m (with ULS-02)
0,00 to 5,75 m (with ULS-06)
± 0,2% of reading (with ULS-06)
± 0,3% of reading (with ULS-02)
Includes non-linearity and hysteresis
max. 0,04%/K
1 mm
Optional Combined Level Measurement (Radar)
Method Radar
Range 0,01 to 15 m
Accuracy ± 2 mm of reading
Resolution 1 mm
Optional Separate Level Measurement
Method: Any 4-20 mA loop powered sensor
Flow Measurement
Method: Conversion from measured velocity to average
velocity based on integrated spectral analysis of
the velocity distribution in the cross-sectional area.
Conversion of water level and pipe size to fluid
area. Multiplication of fluid area by average
velocity to obtain the flow rate.
Conversion Accuracy:
±5.0% of reading
Assumes pipe is 5 to 100% full
Communication
RS-485 communications port with Modbus ASCII slave
communication protocol
Outputs
4-20 mA
1 for validated velocity (vQP) or validated
velocity including median filter (vQPMF)
Internal Temperature Measurement
Method Digital sensor
Range -40° to 80°C
FLOW-TTOIliC
www. flow-Iron ic. com
RueJ.H. Cool 19a I B-4840 Welkenraedt I BELGIUM
Tel.: +32 (0)87 899 799 I Fax: +32 (0)87 899 790
E-mail: info@flow-tronic.com
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