Take your steam, gas and liquid measurements to a whole new level with the digitally based SITRANS FX330 vortex flowmeter. Designed primarily for applications in auxiliary, supply and energy systems, this device is also highly versatile for use in the process industry. With its new features like the integrated heat meter, status alarms in conformity with NAMUR NE107 and extensive Ex approvals, the SITRANS FX330 is ideal for a broad range of chemical, power, and oil and gas installations. The vortex flowmeter product program consists of two types of flowmeters: a flange and a sandwich version.

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  • No wear - Stainless steel construction with high resistance to corrosion, pressure and temperature
  • Useable in hazardous areas - SIL2 certified according to IEC 61508 Edition 2
  • Space-saving installation - Integrated reduction of nominal diameter for economic installation
  • Redundant data management - Exchange of electronics without loss of calibration and configuration data
  • Advanced energy management - Gross and net heat calculation 


Nominal size flanged version 
DN15  to DN300 (½”  to 12”) 
Nominal size sandwich version
DN15  to DN100 (½”  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 and Foundation Fieldbus in preparation
Pressure rating
PN 10 – 100; Class 150 - 600
Medium temperature
-40 … 240 °C (-40 … 464 °F)
Material sensor
Stainless steel 1.4404 (316L), Hastelloy C22 on request
Transmitter enclosure
Die-cast aluminium
Enclosure rating
IP66 / 67 (NEMA 6)

EN 1092-1; ASME B16.5

Wafer design (centering rings included)

Remote transmitter
Connection cable up to 50m (164 ft), remote version in preparation
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

ATEX II2 G Ex ia - QPS IS Class I Div.1 - IECEx II2 G Ex ia

ATEX II2 G Ex d - QPS XP Class I Div.1 - IECEx II2 G Ex d

ATEX II3 G Ex nA - QPS NI Class I Div. 2 - IECEx II3 G Ex nA

ATEX II2 D Ex tb - QPS DIP Class II, III Div. 1 - IECEx II2 D Ex tb

Safety integration level (SIL)
SIL2 according to IEC 61508
Application examples
chemical, power, and oil and gas installations

Application examples: chemical, power, and oil and gas installations

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To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

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As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

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Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.


Whatever your process challenge - SITRANS FX has you covered

Monitoring your processes with accurate vortex flow measurement leads to higher transparency, improved productivity - and a better bottom line. To optimize every operation, Siemens offers integrated vortex sensors and transmitters in both flange and sandwich versions.

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