Max Machinery G240 Gear Flow Meter - Manual (Page 4)

Max Machinery, Inc. G Series User Manual © Copyright 2013 Rev. 001Q4
Meter General Description
The G-Series flow metering systems are the combination
of a high pressure gear meter and a high resolution,
microprocessor based transmitter. While gear meters are
traditionally based on a design similar to a conventional
hydraulic pump, the G Series of flow meters has been
engineered to increase signal resolution, prevent internal
cavitation and greatly reduce the pressure drop required to
move fluid through the gears.
The G-Series transmitter uses modern sensor technology coupled with advanced signal processing to deliver new levels
of performance and reliability. Solid state sensors are used to detect the position of a driven magnet inside the Max
Flow Meter. Changes in position are tracked by a microprocessor, which
generates an output frequency proportional to the flow rate. Advanced
signal processing provides both fine angular resolution (0.36 degrees
rotation per pulse) and rapid response (output updated every 1 ms).
The flow meter and transmitter are calibrated at the factory as a
matched set. This ensures the highest accuracy and allows for quick
setup in the field. For field installations where the transmitter has not
been setup with a meter at the factory, an optional serial interface kit is
available to provide
full access to all configuration options and parameters.
Flow Meter Features
• Capable of operating at high pressures (425 bar/6000 psi).
• Compatible with a wide range of fluid types and viscosities.
• Can operate at high temperatures with a suitable high
temperature transmitter.
Transmitter Features
High resolution measurement - Available in four configurations:
• Frequency, Quadrature, Voltage or Current outputs.
• Linearization of up to 16 points to fully describe the flow meter’s
output curve and achieve the highest system linearity over the
meter’s entire operating range.
Compensation Algorithm - Compensates for variations in Hall sensor and flow meter characteristics to provide a stable,
undamped output that accurately represents the instantaneous flow rate.
Adjustable Anti-Dither Pulse Buffer - Prevents undesired output which can occur at very low flow rates in the presence
of vibration or hydraulic noise. If the meter reverses for less than the programmed fraction of a revolution and then
resumes forward rotation, the output will represent only the total forward flow. Reverse flow which exceeds the buffered
amount will result in an output proportional to reverse flow rate.
Max Model G004