TFA Flowmeter

Brand: Spirax Sarco

The Spirax Sarco TFA flowmeter is designed for use on saturated steam only and operates on the target principle, by measuring the force produced on a target by the fluid flow. 

This force is then converted into density compensated mass flowrate or power and is transmitted via a single loop powered 4-20 mA and pulsed output. 

TFA flowmeters also incorporate a totalized flow function and EIA 232C (RS232) or EIA 485C (RS485) Modbus communications.

The TFA flowmeter has inbuilt electronics which give a density compensated output. 

The LCD display is incorporated within the electronics head and can show totaliser, flowrate, power, pressure and temperature. 

An M750 display unit can be used to provide a remote display function if required, utilising the 4 - 20 mA output.

As the TFA flowmeter is a self contained unit, the uncertainty quoted is for the complete system. 

Many flowmeters claim a pipeline unit uncertainty but for a true system uncertainty, the individual uncertainty values of any associated equipment, such as DP cells, need to be added to the pipeline value.

Specifications

Maximum Design Pressure

  • 32 bar g @ 239° C

Maximum Design Temperature

  • 239° C

Minimum Design Temperature

  • 0° C (non-freezing)

Maximum Operating Pressure

  • Horizontal flow: 32 bar g @ 239° C
  • Vertical flow: 7 bar g @ 170° C

Minimum Operating Pressure

  • 0.6 bar g

Maximum Operating Temperature (Saturation)

  • 239° C

Maximum Electronics Ambient Temperature

  • 55° C

Maximum Electronics Humidity Level

  • 90 % RH (non-condensing)

Designed for a Maximum Cold Hydraulic Test Pressure

  • 52 bar g

Documentation

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