Two-Phase Mass Flow Meter

The Correflow MFM combines the technology of two patented measurement techniques (velocity and concentration) in a single sensor to achieve a measurement of mass flow. The first measurement determines the two phase slurry velocity and the second measurement determines the fraction of one of the phases of the mixture in relation to the other. Combining these two parameters yields mass per unit time (ie. mass flow).

• Materials: Insulating liquids, solids (particulate), gas (bubbles or as carrier)

• Typical Response Time: Concentration–updated at 2.5 millisecond intervals using last measured velocity; Velocity–typically updated once per second

• Purge Option: Type Z purged (NEMA 4X): Cl1, Div 2, GR C&D

• European (Eex approved) housing also available

• Sensor: Typical Sensor Pipe sizes: 1/8” (.32 cm) ID or greater

• Pressure limits: 1000 psi (69 bar) typical for small sensors, Higher pressure designs available. No moving parts, no flow restrictions or additional pressure drop

• Power Requirements: 115 to 240 VAC, 50 to 60 Hz (100 Watts maximum)

• Instrument air for optional pressurization(intermittently 4 scfm @ 80 to 120 psi)

• Data Analysis Velocity, volume fraction, mass fraction, mass flow measurements on an instantaneous basis and averaged over user programmed time intervals, Total mass for fixed time intervals, Stream temperature

• Calibration Routines: Sensor self-tuning with optional dynamic auto-zeroing routines; Adjustable gain on concentration and velocity measurement circuitry; Adjustable signal filtering on concentration measurement circuitry; Adjustable sampling rate for a wide range of process conditions

• Software and fully installed PC available

• Sensor connections designed intrinsically safe

• Each sensor has Four 4-20mA outputs which are independently

• programmable to any Four of 12 available parameters

• MODBUS over RS485 or Ethernet communications: communication or data read out for remote parameter adjustment, calibration and testing.

• Various digital and analog inputs optionally available

Benefits

• Continuous analysis with selectable time averaging

• No moving parts, unaffected by vibration

• No additional pressure drop

• Selectable output scaling

• Designed intrinsically safe

• Ruggedized for the factory environment

• Instantaneous and average mass flow outputs

• Non-contact measurement