Vortex Flow Meter
Inline-Version Typ: DVH


Our vortex flowmeter provides accurate and reliable flow measurement. In addition to the high-precision velocity sensor, the flowmeter includes a precision temperature sensor and a pressure transmitter. Thus it is possible to measure volumetric flow, mass flow, temperature, pressure, density and energy consumption with one device. The multivariable principle reduces complexity and cost compared to installing multiple individual devices to obtain the same process measurements….

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Wirbeldurchflussmesser Vortex DVH
DVH-EMS RTD Sensor Transmitter

Energy Monitoring
e.g. for steam and hot water applications

Robust construction, multivariable measurement and high measurement accuracy make our meters the ideal solution for recording energy consumption in your plant. The flow meter monitors one side of the process, either the flow or the return, and uses an input from a second separate temperature sensor on the opposite side of the process to calculate energy consumption. Selectable energy units include BTU, MBTU (thousand BTU), MMBT (million BTU), MWHr (mega watt-hour), KWHr (kilo watt-hour), HPHr (horsepower hours), MCal (mega calories), and MJ (mega joules). The transmitter indicates the two measured temperatures, the difference of the temperatures, the total mass as well as the energy consumption.

A single multivariable sensor with integrated flow computer and an external temperature sensor contributes significantly to reducing initial procurement and installation costs. In additionally, the robust design reduces maintenance costs.



Reliable measurement of liquids, gases and steam.
Only one tapping point in the pipeline enables accurate measurement of the mass or volume flow rate


Fully welded sensor, thus no sealing at the sensor head.
Wetted parts: stainless steel 316L

Special features
  • Flange type: DN15 (1/2″) bis DN200 (8″)
  • Wafer type: DN 25 (1″) bis DN 100 (4″)
  • High temperature version up to 400°C (750°F)
  • Max. Max. operating pressure: 100 bar abs. (1500 psia)
  • With 3 senor elements, the following parameters are determined:
  • Volume flow rate, mass flow rate, temperature, pressure, density
  • Energy Monitoring
Technical data


Process variableLiquidGas & Steam
Volume flow± 0,7% of rate± 1% of rate
Mass flow± 1% of rate± 1.5% of rate
Temperature± 1°C (± 2°F)± 1°C (± 2°F)
Pressure±0,3% of full scale±0,3% of full scale
Density±0,3% of rate±0,5% of rate
RepetabilityStability (over 12 Months)
Volume flow±0,1% of ratenegligible error
Mass flow±0,2% of rate±0,2% of rate
Temperature± 0,1°C (±0,2°F)±0,5°C (±0,9°F)
Pressure±0,05% of full scale±0,1% of full scale
Density±0,1% of rate±0,1% of rate

Response time

  • Adjustable from 1 to 100s

Process and Ambient Temperature

  • Standard temp. : -40…260°C (-40…500°F)
  • High temp.: up to 400°C (750°F)
  • Ambient temp.: -40…60°C (-40…140°F)
  • Storage temp.: -40…85°C (-40…185°F)

Power supply (model dependent)

  • 12…36 VDC 2-wire, loop powered
  • 12…36 VDC 4-wire
  • 100…240 VAC, 50/60Hz


  • Alphanumeric 2 line x 16 character LCD digital display
  • 6 pushbuttons for full field configuration
  • Display rotatable in 90° intervals

Output signals

  • Analog: 4-20 mA, loop powered for volumetric meters
  • Alarm: Solid state relay, 40 VDC
  • Totalizer Pulse: 50ms pulse, 40 VDC
  • Volumetric: 1 analog, 1totalizer pulse
  • Multivariable: up to 3 analog signals, 3 alarms, 1 totalizer pulse
Certificates and Approvals

ATEX: II 2 G Ex d IIB + H2 T6
II 2 D EX tD A21 IP66 T85°C

IEC EX Ex d IIB + H2 T6
Ex tD A21 IP 66 T 85°C,Ta=-40?+60°C

IP66, TYPE 4X, T6 Ta=-40?+70°


Modbus process monitoring


Device sizing