VM V-Cone®: When is a Differential Pressure Meter Best for Municipal Applications?
Oftentimes in municipal flow applications utilities and districts opt for a propeller meter, an electromagnetic (mag) meter, or another type of “no moving parts” meter like an ultrasonic device.
However, there are instances in which a differential pressure (DP) meter is a more attractive option, and specifically the VM V-Cone, McCrometer’s DP meter designed for a wide variety of municipal flow applications.
VM V-Cone: Convenience in Low Maintenance
Shutting down a water district’s pipeline for routine maintenance or repairs is a major hassle, and a costly one at that, when cutting off a literal revenue stream. Many popular municipal flow measurement devices require intermittent cleaning, especially if the media flowing contains a harsh chemical or causes corrosion or buildup.
In one instance, a VM V-Cone was the desired retrofit meter to replace a venturi meter that had grown shut over time due to scaling inside the pipeline and the meter itself (Figure 1). Whereas other meters have limitations to what material they can be engineered from, the VM V-Cone can be customized from durable materials that withstand whatever flow runs through it. This factor contributes to the meter’s 25+ year lifespan and the need for virtually zero maintenance, which means that water utility operators can meter with confidence knowing their VM V-Cone is always optimally performing.
Itty Bitty Real Estate
Ideal for new projects as well as retrofits, the VM V-Cone is often chosen for its extremely low straight run requirements and self-conditioning technology. Many older water districts simply don’t have the real estate or the capital to add additional piping to suit the straight pipe-run requirements of flow meters that cannot handle a variety of flow disturbances.
Elbows? No problem. T and Y junctions? Won’t stop the VM V-Cone!
The VM V-Cone requires close to zero upstream and downstream straight run, while still maintaining better than ±1% accuracy. These specs make the VM V-Cone a solid choice for applications such as well sites, pumping stations, filter galleries, pressure relief vaults, pits, manholes, and general distribution lines.
V-Cone vs. VM V-Cone: What’s the Difference?
Invented by McCrometer in 1985, the V-Cone typically measures flow for a variety of industries, most notably oil and gas and industrial. The VM V-Cone, on the other hand, is specifically designed to meet the needs of municipal applications. Coated in McCrometer’s proprietary fusion-bonded epoxy coating, the VM V-Cone has a lifetime guarantee against delamination and liner tearing. In addition, the VM V-Cone is a plug-and-play system that is composed of the V-Cone element, transmitter, and isolation manifold, making it easy to install and start getting the flow data needed to make informed decisions about water operations.
Specific applications where water velocity is slow may pose a challenge to the VM V-Cone, as its turndown ratio is lower compared to the V-Cone, or even a mag meter. However, if the flow is strong, accuracy is key, and real estate is tricky, the VM V-Cone is the investment meter that will consistently bring value to water operations professionals for years to come.
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