ProSoft MVI56-AFC Flow Computer Module

Gas and Liquid Measurement with the MVI56-AFC

The MVI56-AFC adds flow computer functionality to Rockwell ControlLogix controllers. This module calculates compensated flow rates for gas and liquid measurement points. System integrators therefore apply it in custody transfer and pipeline monitoring projects. Its single-slot format fits standard ControlLogix chassis without extra adapters.

Detailed Technical Parameters

Calculation accuracy defines the MVI56-AFC, because the module runs AGA and API flow equations on dedicated firmware. The backplane interface exchanges measurement data with the ControlLogix processor. Meanwhile, the analog input channels accept signals from pressure and temperature transmitters. Review the essential specifications in the table below.

Parameter	Specification
Function	Flow computer for gas and liquid measurement
Flow standards	AGA 3, AGA 7, AGA 8, and API 2540 equations
Input channels	Analog inputs for pressure, temperature, and differential
Dimensions (W × H × D)	40 × 180 × 130 mm
Weight	Approximately 0.5 kg
Interface	ControlLogix backplane connector plus analog terminals
Component count	Calculation processor board plus analog input stage
Energy storage	Local decoupling capacitor array
Operating temperature	0 °C to 60 °C

Integration into Control Systems

The MVI56-AFC fits into a standard ControlLogix slot and connects through the backplane connector. Commissioning engineers configure meter runs and fluid properties through the setup software. Consequently, measurement points return to service quickly after module replacement. The module recalculates flow values within fixed scan intervals. Furthermore, the metal faceplate shields the circuitry from interference in meter cabinets.

Why Plants Choose This Module

Many facilities still operate ControlLogix platforms for their proven control reliability. Hence, the MVI56-AFC serves as a dependable spare for keeping flow calculations online. Its standardized slot format simplifies stock management across multiple sites. In addition, the integrated analog inputs reduce extra hardware inside panels. This module keeps measurement data accurate and reporting schedules on track.