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Subsea Flow Metering


Here you will find a list of the top questions and answers for Subsea Flow Metering.  



When pre-configured, the system can handle both tasks. In digital operating modes like Canbus or Modbus, a flow rate output can be produced with the onboard Seastream FloCalculator. This supplies the flow rate in Mass / Volumetric / Volumetric at standard operating conditions. The Differential Pressure (DP) Transmitter produces the DP and Pressure measurements. Typically, the temperature would come from one of the following:

  1. Sent over the communication Bus (CAN or Modbus) from the MCS from a Temperature Transmitter local to the SPFM, (temperature correction performed in the Seastream FloCalcluator).
  2. Fixed measurement set at the time of delivery.
  3. Keypad value issued through the MCS.

Check out our Differential Pressure Transmitter product page.

This is dependent upon sensor configuration. A single 4-20 mA transmitter has typically a maximum power consumption of 0.5 W. A Canbus / Modbus transmitter is <1W and falls into the Class 1 subsea instrument device (low power) under 4 W. As a general rule, SPFM’s are supplied with two DP sensors so the total power consumption on a 4-20 mA configuration SPFM is 2x0.5W=1W or 2x1W=2W on a SPFM for a Canbus/Modbus system. Click to view our Differential Pressure Transmitter product page.

Contact us: We have detailed specifications on power consumption.

 

Yes, but a Temperature sensor will be required in addition to the Standard scope.

Alternatively, it can either be:

  1. Sent over the communication Bus (CAN or Modbus) from the MCS from a Temperature Transmitter local to the SPFM, (temperature correction performed in the Seastream FloCalcluator).

        2. Fixed measurement set at the time of delivery.

        3. Keypad value issued through the MCS.

The recommended installation is in the horizontal orientation. It is possible to install in the vertical orientation for some of the model variants. Refer to Solartron for guidance on your particular application.

Yes, but care and consideration in the SPFM design especially for Gas applications to reduce hydrate formation.

Gas applications should consider the following:

  1. Tappings should be angled for free draining of any liquids with no liquid hold-ups.
  2.  Remote Seals should be angled/positioned where no liquid can rest against the diaphragm.
  3. Gas applications should ensure there are no liquid hold-ups to help mitigate hydrates in the tapping and diaphragm face. Please note this does not guarantee hydrates will not form in this zone.
  4. Liquid applications will not have any concerns in this region.