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Larger Pipe Sizes Increase Flow Rating

New diameters on flowmeters allow maximum measurements up to 600 gpm

Randy Frank, Contributing Editor -- Design News, October 9, 2006

For higher flow measurements, Universal Flow Monitors Inc. added 3-inch and 4-inch pipe sizes to its family of CoolPoint vortex shedding flowmeters. The 3-inch unit has a maximum flow rate of 300 gpm (1,136 lpm) and the 4-inch unit has 600 gpm (2,271 lpm). The pipe connections are ANSI 150# RF flanges. For flow applications involving heat removal, an optional temperature transmitter adds the capability of monitoring temperature readings and transmitting them to a process controller.

The electronic units have a 4 to 20 mA and one switch or pulse outputs. Users' configurable features include: engineering units, selectable alarm state, set points or pulse out, and flow direction. Units with both flow and temperature outputs have standard flow output plus 4 to 20 mA and a set point for temperature. The flow alarm specification is 5 percent full-scale deadband, accuracy is ±2 percent full-scale, and repeatability is ±0.25 percent. For temperature, the alarm is ±2 percent full-scale deadband, with an accuracy ±1 percent full-scale, and repeatability of ±0.25 percent. Maximum operating pressure for either unit is 200 psig (13 bar).

The vortex shedding design has no moving parts, which eliminates the potential for jamming or coating. The units can measure and monitor flow in cooling loops using low-viscosity, clean or dirty water-like liquids compatible with brass, PVDF, and Viton. The flowmeters target measurements of cooling water, water/glycol coolant and low-viscosity fluids in automated and robotic machinery.

Get more information on CoolPoint flowmeters.

	The Flowmeters' 0.3-inch high LEDs provide flow data within a response time of 3 sec and temperature within 1.8 sec to 63 percent of change.

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