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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.
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