DESCRIPTION

The Model 140MX Flowmeter (Figure 1) works on the fluid phenomenon of momentum exchange (see page 6 for details), providing accurate flow measurement for difficult to handle, high viscosity, and/or low flowrate

applications. It features:

• Accurate and repeatable flow measurement
• High turndown (typically 12 to 1)
• No moving parts to damage or wear
• Withstands flow overranges of up to 400% of full scale
• Two-wire transmitter or remote signal converter for installation flexibility
• No meter body calibration shift, minimizing maintenance requirements
• Output linear with flowrate
• Rugged and reliable sensors
• Highly immune to shock and vibration
• No piping run requirements, simplifying installation

The Model 140MX consists of a meter body and a twowire transmitter; a remotely-mounted signal converter is also available as an alternative to the two-wire transmitter. The rugged meter body includes a selfcontained strain gage sensor for direct, in-line installation into new or existing piping. The Model 140MX Flowmeter is constructed to resist harsh industrial environments. It can be subjected to flow overranges and the resulting pressure surges of up to 400% of full scale with no damage to the meter body or sensor and no shift in calibration.

The Model 140MX Flowmeter also contains no moving parts, which minimizes maintenance and service needs. This design eliminates the need for costly, periodic meter recalibration. In addition, there are no gears that can bind or jam, resulting in interruption of flow. The design of the 140MX does not require a maintained turbulent flow in the pipe for operation. This allows it to be used with high viscosity fluids and/or low flowrates. It operates within its specified accuracy at Reynolds Numbers as low as 400 and will continue to provide an output signal at Reynolds Numbers as low as 75. Fluids with viscosities up to 80 centistokes can be metered.