Vortex flow meter


The all-in-one vortex solution for steam, gas and liquid

The new digitally based SITRANS FX330 vortex flow meter is ideal for HVAC and auxiliary systems and versatile enough for many process applications. With the SITRANS FX330 you benefit from enhanced energy and process efficiency, greater accuracy, and significant cost savings.

SITRANS FX330 features:

  • Safety built right in - designed  to be fully compliant with IEC 61508 SIL 2 safety standard

  • Minimal downtime with redundant storage of all calibration and configuration data

  • Integrated online density compensation, for saturated steam - providing superior accuracy

  • Flow, pressure (optional) and temperature monitoring in one user-friendly, two-wire device

  • Sensor designed for low pressure loss to increase operational efficiency

The vortex flow meter product consists of two types; a flange and a sandwich version.

Typical applications: Auxiliary, supply and energy systems, chemical, power, oil and gas




Nominal size flanged version
Nominal size sandwich version

1/2" to 12"
1/2" to 4"

Process values

Volume flow, Mass flow, Corrected volume flow, Density, Temperature, Pressure, Heat energy.


Steam and gases: +/- 1 %
Liquids: +/- 0.75%

Current Output

4 - 20 mA HART (loop powered)

Digital Output

Pulse (max. 1000 Hz), frequency, status, limit switch


HART 7, Profibus PA (as of July-Aug 2017)

Pressure rating

Class 150- 600 lb. flange rating

Medium temperature

From -40 °F to 464 °F

Material Sensor

Stainless steel 1.4404 (316L), Hastelloy C22 on request

Transmitter enclosure

Die-cast aluminum

Enclosure rating

IP66/67 (NEMA 6)


EN 1092-1: ASME B16.5

Temperature sensor

Standard integrated temperature sensor

Pressure sensor

Optional integrated pressure sensor with or without isolation valve

Display and keypad

High-resolution graphical display and 4 operating keys (alternative use magnet pen)

Ex Approvals

Class I Div. 1 - Intrinsically Safe - QPS
Class I Div. 1 - Explosion Proof - QPS
Class I Div. 2 - Non-Incendive - QPS
Class II, III Div. 1 - Dust Ignition Proof - QPS

Safety integration level

SIL2 according IEC 61508


  • Integrated pressure and temperature compensation

  • Temperature compensation for saturated steam included as standard

  • Non-wearing stainless steel construction with high resistance to corrosion, pressure and temperature

  • SIL2 certified according to IEC 61508 Edition 2

  • Useable in hazardous areas

  • Integrated reduction in nominal diameter for space-saving and economic installation

  • Redundant management: Exchange of electronics without loss of calibration and configuration data

  • Gross and net heat calculation to support advanced energy management


SITRANS FX330 Brochure

Higher productivity at a lower cost

SITRANS FX330 - The all-in-one vortex solution for steam, gas, and liquid.