10.2. Area Velocity Sensor
Sensor Integrated Doppler ultrasonic velocity and water level with temperature measurement
Measuring Principle Velocity: pulse coherent
Water level
Ultrasonic travel time
Medium Wastewater ≥ 50 ppm
Frequency 1 MHz
Beam Angle 45°
Number of Cells Max. 32 cells
Operating Temperature 5…122° F (-15…50° C)
Velocity Range
Velocity: ± 16.5 ft/s (± 5.0 m/s)
Min. detectable flow velocity ± 0.13 ft/s (± 0.04 m/s) depending on size and amount of
particles
Velocity Accuracy
± 1% full scale in the range 5.0…16.5 ft/s and -5.0…-16.5 ft/s
(1.5…5.0 m/s and -5.0…-1.5 m/s)
±0.1 ft/s in the range -5.0…5.0 ft/s
(± 0.03 m/s in the range -1.5…1.5 m/s)
Water Level Range
1.6…51 in. (0.04…1.3 m)
Expandable via external 4…20 mA sensor
Water Level Accuracy ± 2.6 in. (± 0.065 m)
Temperature Accuracy
± 0.5 K for 4…57°C;
Linearized range: 0…60° C
Overall range: -60…150° C
Flow Accuracy Typically ± 2% of reading
Material
Stainless steel (main unit, base plate)
PEEK (Piezo Oscillator cover lid)
Protection Class IP 68
Dimensions
7.1 x 1.6 x 0.9 in. (LxWxH)
180 x 40 x 22 mm (LxWxH)
(incl. base / mounting plate)
Cable Length 32…262 ft (10…80 m)
Cable Outer Jacket Polyethylene; Diameter Ø 0.4 ± 0.012 inn (10.00 ± 0.3 mm)
Cable Operating Temperature
Range
-4…158° F (-20…70° C)
Technical Data
Page 108 March 2021HYB-UM-03155-EN-03
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