Flow calculation and measurement

• Dedicated volume flow calculation with DSP technology
• 100 Hz update rate for all output on all primary process values
• Maximum data age from sensor to output is 20 ms
• Independent low flow cut-off settings for volume and mass flow, standard volume flow and velocity
• Zero-point adjustment on command from discrete input or host system

Operation and display

• User-configurable operation display
  • Full graphical display 240 x 160 pixels with up to 6 programmable views
  • Self-explaining alarm handling/log in clear text
  • Help text for all parameters appears automatically in the configuration menu
• SensorFlash technology stores production specific system documentation and provides removable memory of all flowmeter setups and functions
  • Calibration certificates (with ordered calibration)
  • Non-volatile memory backup of operational data
  • Transfer of user configuration to other flowmeters
  • 4GB SD card for storage and data logging
  • Audit trail of all parameter changes
  • Alarm logging

Alarms and safety

• Advanced diagnosis and service menu enhances troubleshooting and meter validation
• Configurable upper and lower alarm and warning limits for all process values
• Alarm handling can be selected between Siemens and NAMUR standard configurations

Outputs and control

• Monitoring comprising of 3 individually configurable totalizers
• Multi-parameter outputs, configurable outputs assigned individually to any of the following parameters:
  • Volume flow
  • Standard volume flow
  • Mass flow
  • Flow velocity
  • Sound velocity
  • Density
  • Process viscosity
  • Process pressure
  • Process/medium temperature

Up to six I/O channels are configured as follows.

Channel 1

Channel 1 is 4 to 20 mA analog output with HART 7.5. The current signal can be configured for massflow, volumeflow and includes the availability of active or passive function selected by wiring on the non-Ex terminals. Alternative Modbus RTU RS 485 is available.

Channel 2

Channel 2 is a signal output which can be freely configured for any process variable.

• Analog current (0/4 to 20 mA)
• Frequency or pulse
• Operational and alarm status

Channels 3 and 4

Channels 3 and 4 can be ordered with signal (freely configured for any process variable) or relay outputs, or signal input.

Signal output

Signal output can be user configured to:

• Analog current (0/4 to 20 mA)
• Frequency or pulse
• Redundant frequency or pulse (linked to channel 2)
• Operational and alarm status

Signal input

Signal input can be user-configured for:

• Totalizer reset functions
• Force outputs or freeze process values
• Initiate automatic zero point adjustment

Relay

Relay output(s) can be user configured to:

• Alarm status

4-20 mA signal outputs and inputs are ordered as active or passive for Ex versions, active and passive for non-Ex versions - function selected by wiring on the terminals.

During initial commissioning of the flowmeter, all outputs can be forced to a preset value for simulation, verification or calibration purposes.

Channels 5 and 6

• RTD temperature inputs for 1000, 500 or 100 О© RTD's -
  2, 3 or 4 wire RTD's supported

Approvals and certificates

The SITRANS FST030 transmitter was designed to comply with or exceed the requirements of international standards and regulations.