Steam fiscal monitoring for utility metering, cogeneration, and plant energy balancing needs mass flow and thermodynamic values worked out correctly across water, saturated steam, and superheated steam. The Contrec 515 SC01 Steam Flow Computer is built for this, using frequency flowmeter input.
It reads pulse signals alongside temperature and/or pressure inputs, and calculates mass flow, specific volume, and enthalpy per the IAPWS-IF97 Industrial Formulation. In actual application, this unit usually sits out on process plant rather than in a control room, so it comes in a weatherproof IP65 enclosure with a backlit alphanumeric LCD.
It also has an adjustable 8-24V DC sensor excitation supply, isolated 4-20mA loop retransmission, and dual RS-232/RS-485 Modbus RTU ports for integration into plant automation networks.
Before we quote this, we would normally check your flowmeter’s frequency output signal, your steam pressure and temperature, and whether you are measuring saturated or superheated steam.
Hope this helps.
