Siemens SITRANS Vortex Flowmeters

SITRANS FX300 Vortex Flowmeter

  • Versatile Suitable for accurate standard volumetric and mass flow measurement of liquids, steam and gases
  • Accuracy Steam and gases: +/- 1% Liquids: +/- 0.75%
  • All in One Solution Complete system with integrated pressure and temperature compensation
  • Compact or Remote Design Transmitter can be compact mounted or up to 30 meters away from sensor with remote version
Product Options


Siemens SITRANS FX vortex flowmeters provide accurate volumetric and mass flow measurement of steam, gases and liquids as an all-in one solution and include integrated pressure and temperature compensation. The FX300 is a compact vortex flowmeter in a single or dual transmitter version, and is suitable for measuring industrial steam, gases, as well as conductive and non-conductive liquids. E.g. steam (saturated steam, superheated steam), industrial gases (compressed air, nitrogen, liquefied gases, flue gases), and conductive and non-conductive liquids (demineralized water, boiler feed water, solvents, heat transfer oil).

Siemens SITRANS F X vortex flowmeters detect the frequency at which alternating vortices are shed from a bluff body inserted into the flow stream in order to measure flow rate. This principle of measurement
is known as Von Karman's vortex street principle: alternating vortices form behind an object in a stream. The frequency of the alternating vortices is proportional to the flow rate. The passage of a vortex causes a slight stress on a pick-up placed downstream of the bluff body. The stress is picked up and counted as pressure surges by a dual Piezo crystal placed inside the wing.

The main applications of the SITRANS vortex flowmeters can be found in the following


  • All devices have 2-wire technology and HART communication
  • Temperature compensation for saturated steam is a standard feature
  • Pressure, temperature and flow can be read at a single point.No additional installation of pressure and temperature sensors
  • Direct measurement of energy or energy consumption
  • Integrated temperature and pressure measurement enabling direct compensation of density
  • Optimum process reliability thanks to Intelligent Signal Processing (ISP) - stable readings, free of external perturbations
  • Fully welded stainless steel construction with high corrosion, pressure and temperature resistance
  • Maintenance-free sensor design
  • Ready to use due to plug & play feature. No additional cabling work
  • Minimal pressure drop
  • All units parameterized prior to delivery
  • Pressure and temperature compensation for fluctuating volume flows
  • Measurement of consumption in compressed air systems
  • No risk of deposits or damage (sensor in the turbulent area

Manufactured by: Siemens-Milltronics
Model: SITRANS FX300 Vortex Flowmeter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Oil and gas
Power plants
Saturated steam
Super-heated steam
Energy monitoring


Measuring Range Use calculation and sizing program
Nominal Size Flanged version:
From DN15 to DN300 (1/2 inch to 12 inch)
Sandwich version:
From DN15 to DN100 (1/2 inch to 4 inch)
Accuracy Steam and gases: +/- 1%
Liquids: +/- 0.75%
Input / Output 4 - 20 mA, Pulse/Freq. 0.5 Hz, 24V DC as NAMUR
Communication HART
Power Supply 24V DC as NAMUR
Operational Pressure Max 100 Bar (higher pressure on request)
Ambient Temperature From -40° to 85°C (-40° to 185 °F)
Medium Temperature From -40 °C to 240 °C (-40° to 464 °F)
Display 2 lines, 10 characters per line
Languages: German, English and French
Transmitter Enclosure IP 66 / 67 Aluminum Seawater Resistant
Sensor Material 1.4404/316L, Hastelloy C22 (on request)
Approval ATEX ll 2G EEx d ia [ia] llC T6
FM Class I, II, III Div. 1 & 2


Related products


Yes, the ordering process is very easy. Orders can be made via purchase order or by credit/debit card. Once we have the paperwork we can delivery next day to any location in Europe. Provided with the equipment is a quick start guide, and if you need extra support, the technical support engineers can be contacted via phone call.
Every flow meter is tested upon shipping and return as part of our ISO9001 procedure. Also, as part of this procedure, the flow meter is calibrated once a year. If a copy of the calibration certificate is needed let us know.
We are here to help. If the self-help and quick start guides do not help, then call one of our technical support engineers on +44 (0) 1527 882060. We have supplied and supported many clamp on rental installations throughout Europe.
If the stock is permitting, and all paperwork is received by 12pm then flow meters can usually be available the next day.
Without exception, all our flow meters are tested. If you need a 110v plug instead of the standard 230v plug let us know.
As long as the pipe is relatively clean, coatings or paint is usually not a problem for clamp on flow meters but if the pipe is corroded or the paintwork has bubbled then a quick sanding down with sandpaper or a wire brush is recommended.
An ultrasonic wall thickness gauge, that measures to within 0.05mm, is provided as standard with all flow meter rental packages.
The screendump facility on the integrated dataloggers on all our flow meters, allows you to photograph any screen and download it to your pc.