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Mass Flow Computer with Master Proving
The 515-MP01 application measures the mass flow of a product. The instrument uses the frequency output from a mass flowmeter and has an additional “master meter” input and Meter Factor for in-line proving.
The master meter input allows an “on the fly” proving run to be carried out against the line meter without interrupting the flow. A recommended Meter Factor is calculated and can be entered to ensure accurate measurement for current flow conditions or to cater for a slight deterioration in the line meter.
The flow computer maintains the Line flowrate and total independently of the proving totals. Proving runs can be controlled via the RTU Modbus communications or via rear panel logic inputs.
Calculations
The Meter Factor (MF) is multiplication correction factor used for the line meter. It is applied to each total and rate sample, as they are collected, to obtain the correct value:
• mass = MF × (pulses / k-factor)
The flow rate is derived from an accurately measured frequency:
• flow = MF × (frequency / k-factor)
Features
Provides “on the fly” proving
Remote Modbus or rear panel control
Tailored for mass frequency flow and master meter inputs
Allows for non-linear correction
Selection of second language and user tags
RTC logging with over 1000 entries
Infra-red communications port on front panel
Pulse width and scaling of pulse output
4-20mA retransmission
Selectable protocols on serial ports including Modbus RTU and Printer output
Front panel adjustment of 8-24V DC output voltage
Backlit display
LCD Backup Typical plant diagram
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