Low-Flow Vortex Flowmeter for Liquids

  • Fast response
  • Local display, analog output (4-20 mA)
  • Compact, light-weight, cost-effective construction
  • No moving parts; maintenance free
  • Low pressure drop
  • IP65 construction
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Vortex flow meters with local display for monitoring low viscosity, water-like liquids

LIQUI-VIEW Base instruments are cost-effective Vortex flow meters for monitoring the flow or consumption of cleansing water, cooling water or spa water, operating on the vortex principle. The unique sensor body and IP65 protected transmitter design makes LIQUI-VIEW Base one of the most compact, lightweight vortex meters in the industry. The flow meters do not contain any moving parts, create just a low pressure drop and can be mounted in any position, requiring no straight inlet or outlet runs.

LIQUI-VIEW Base model LVB-25-AD has a nominal size of DN25 for flow rates of 9…150 l/min and is suited for operating pressures up to 12 bar(a). The instrument provides an analog output signal (4-20 mA) proportional to the flow and has a tilting display for local flow indication.

Technical specifications

Accuracy at ≥ 50% FS : < 2% RD;
at < 50% FS : < 1% FS
Turndown approx. 1:20 (5...100%)
Media Water and water like liquids (cooling, well, waste, pure, drinking, heating and tap water)
Operating temperature < 85 °C
Ambient temperature -20°C...+50°C
Max. operating pressure

(for lifetime)
12 bar(a) at +40°C

(for lifetime)
6 bar(a) at +85°C

Pressure drop (mbar)1) (0,92 * Q2) / 100
Mounting Any position, attitude insensitive
Mechanical parts
Material (wetted parts) Body : PA6T/6I (40% GF)
Sensor paddle : ETFE
Max. test pressure 18 bar(a) at +40°C
Diameter DN25
Process connections G1¼
Seals EPDM
Ingress protection (housing) IP65
Electrical properties
Power supply 10 ... 30 Vdc
Current consumption < 50 mA


4...20 mA

Load < (Uin - 10V) / 20 mA
Connection type M12 x 1
Drinking water approval KTW / W270
EMC EN 61326-2-3
1)  Q = flow rate in l/min


LIQUI-VIEW Base brochure

Bronkhorst High-Tech B.V.

Nijverheidsstraat 1A
NL-7261 AK Ruurlo (NL)
Tel. +31 573 45 88 00

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