CS Instruments VX 570 - Vortex Flow Sensor For Steam, Gases and Liquids

The high-precision all-rounder with integrated pressure and temperature compensation.


The high-precision all-rounder with integrated pressure and temperature compensation.


CS Instruments

CS Instruments

CS Instruments GmbH & Co. KG with locations in 24955 Harrislee and 78052 Villingen-Schwenningen/ Tannheim, is managed by Dipl. Eng. (FH) Wolfgang Blessing as sole Managing Director.

CS Instruments GmbH was established in the year 2002 by Christian Schuldt and Wolfgang Blessing as equal shareholders/Managing Directors.

Wolfgang Blessing already was sound a specialist on the sector of compressed air technology resp. industrial measurement technology long before the establishment of CS Instruments GmbH in the year 2002. Prior to the foundation of CS Instruments GmbH Dipl. Ing. (FH) Wolfgang Blessing acted for more than 10 years as primarily responsible product manager for industrial measurement technology at a worldwide known manufacturer of measuring instruments for compressed air and gases in the Black Forest. The technical knowledge and experience matched with the long-term practical knowledge was the corner stone for the success of CS Instruments.


  • Measurement of standard volume flow, operating volume flow, mass flow
  • Measurement at high temperatures of up to 350°C
  • Measurement up to 63 bar
  • Suitable for unknown/changing gas compositions and mixed gases
  • Aggression resistant – all parts in contact with media made of stainless steel
  • Not sensitive to vibrations due to reference vibration measurement
  • No moving parts


  • Measurement of saturated steam or superheated steam
  • Measurement of liquids
  • Measurement of mixed gases
  • Measurement of corrosive media


  • Measuring range: See table
  • Measured medium: Primary single-phase gases, mixed
    gases, saturated steam, superheated
    steam and liquids
  • Accuracy:
    Volume flow (m³/h)
  • Mass flow (kg/h) or
    standard volume flow (Nm³/h)
    Gas / Steam:
    ± 1 % of m.v., (Re > 20,000)
    ± 2 % of m.v., (10,000 < Re < 20,000)
    ± 0.75 % of m.v., (Re > 20,000)
    ± 2 % of m.v., (10,000 < Re < 20,000)
    Gas / Steam:
    ± 1.5 % of m.v., (Re > 20,000)
    ± 2.5 % of m.v., (10,000 < Re < 20,000)
  • Measuring principle: Vortex – vortex frequency measurement
  • Process temperature: -40…+350°C
  • Process pressure: up to 63 bar(g)
  • Protection class IP67
  • Material measuring section
    and parts in contact with
    Stainless steel 304
  • Material display unit: Aluminium – die casting
  • Signal outputs: As standard:
    RS 485 (Modbus-RTU), 3x 4…20 mA,
    Ethernet interface
  • Power supply: 18…36 VDC
  • Measuring span: Gases: 1:30
    Vapour: 1:35
    Liquids 1:23
  • Viscosity DN 15 ≤ 4 mPas
    DN 25 ≤ 5 mPas
    DN 40…DN 300 ≤ 7 mPas
  • Repeatability: ± 0.3 % of m.v.
  • Process connection: Flange DIN EN1092-1
    Flange ANSI
    Wafer type

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