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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.