Ultrasonic flow meter for low flow rates of water-like liquids

  • Interference free operation
  • Long life cycle, no moving parts
  • Insensitive to pressure peaks and particles in the fluid
  • Wide independence to the inlet and outlet pipe diameters
  • Analog (4..20 mA) and pulse output signals
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Ultrasonic flow meters for low flow rates of water-like liquids

SONIC-VIEW SVM-030 is an ultrasonic flow meter for water and aqueous solutions. The compact, non-obstructive instrument operates on the basis of two ultrasonic transducers, mounted on the outer surface of a straight, stainless steel tube. The flow meter does not contain any moving parts, causes virtually no pressure loss and can be mounted in any position, requiring no straight inlet or outlet runs. Its sensor housing is IP54 protected.

The in-line ultrasonic flow meter has a nominal size of DN10 for flow rates of 1,5…30 l/min and is suited for operating pressures up to 16 bar(g). The instrument allows frequency and analog output proportional to the flow and features an additional alarm output. The alarm status is indicated by an LED and the alarm level can easily be adjusted by means of a rotary switch on the front cover.

Technical specifications

Measurement / control system
Max. flow rate33 l/min
Volume flow accuracy3…30 l/min ± 4% RD
1.5…3 l/min ± 10% RD *
Turndown ratio1:20 (5…100%)
Reproducibility1 % FS
Signal output starting from1 l/min
Flow / alarm indicationLED green / red
MediaWater and aqueous solutions
Operating temperature5 … 60 °C
MountingAny position, attitude insensitive
Mechanical parts
Material (wetted parts)Process connection : stainless steel 1.4404
Measuring pipe : stainless steel 1.4404
HousingAluminium casting
Process connections¾“ BSP male thread
Ingress protectionIP54
Nominal pressurePN16
Electrical properties
Power supply+10 … 30 Vdc
Current consumptionmax. 80 mA
Analog output4…20 mA NAMUR NE43 compliant,
max. burden = (+U - 10V)/23 mA
Frequency outputPulse rate / K-factor : 855 pulses/l
Resolution : 1,2 ml/pulse
Signal shape: Sqare wave signal PNP open collector
Signal current : Max. 100 mA, short circuit proof
Max. pull-up voltage : 30 Vdc
Alarm output- Alarm in case of lack of flow or air in the pipe
- PNP open collector, max. 100 mA short-circuit-proof
- 16 different setpoints selectable with rotary switch
Electrical protection measuresShort-circuit proof (up to 30 V) and
polarity protection (up to -30 V)
Electrical connection5 pin plug connector M12x1
Electrical connection
Control valve options
External actuator options to be connected to the controller
Ex-proof specifications
Approvals / certificates

Technical specifications subject to change without notice.

* Test conditions
  Water 20...60 °C  at 5 l/min
  Adjustment 30 °C at 3 and 27 l/min

For dimensional drawings and hook-up diagrams please visit the product page on our website


SONIC-VIEW brochure

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