The cast iron Wyatt Series PMT Lo-Loss® meter from HMA Instrumentation is a differential-producing flow tube that maintains its accuracy over a wide range of flow rates. The hydraulic shape of the Wyatt PMT Lo-Loss® meter from HMA Instrumentation incurs a lower permanent pressure loss than any other differential producing flow device. It can be provided with either 125 or 250 PSIG flanges.

The cast iron Wyatt series PMT sLo-Loss meters from HMA Instrumentation is designed to accurately and reliably measure the flow rates of water, wastewater, sludge, slurries, clean fluids, and gases in full pipe conditions. The series is ideally suited to applications where permanent pressure loss must be kept to a minimum, such as in gravity-fed systems, or where a savings due to lower pumping costs can be realised. The Model PMT-C is designed for rate-of-flow control applications, while the PMT-S incorporates a rugged design for cleaning the pressure taps for solid-bearing fluids.

For pipe Reynolds numbers greater than 100 000 and in a normalised piping configuration, the Wyatt PMT Lo-Loss® from HMA Instrumentation provides a flow measurement accuracy of ± 0.25%, with independent flow calibration and ± 1.00% without flow calibration. Lo-Loss® is a registered trademark of Wyatt Engineering.
Features include:

• Lowest pressure loss
• Short laying length
• Economical design
• Best documented flow tube on the market