Neptune HPT flowmeters utilize the latest turbine design technologies to provide the finest, most dependable and flexible low cost cold-water (to 49 degrees C/120 degrees F) municipal and industrial turbine meters on the market. These flowmeters meet and exceed AWWA C701 specifications for accuracy, design and materials. In most cases, they exceed rangability standards standards by 25% or more. Each unit consists of a rugged bronze maincase and cover, an AWWA Class II helix turbine measuring element, and a roll-sealed magnetic drive non-reset totalizing register. For calibrated digital pulse output, the TRICON-S register/pulse transmitter may be easily installed without interruption of service.

Design Features
Sustained Accuracy

The Schlumberger/Neptune helix rotor design provides accuracies of 100% +/- 1.5% over a 50:1 or greater turndown ratio, the widest operating flowranges in the industry. A tamper-proof calibration vane allows for adjustment of meter accuracy while the unit is in line and under pressure. This device is mounted under the register or covered by a protective cap in a tamper-resistant enclosure.

Flexibility

these units may be installed in right or left hand flow orientation, while the register may be rotated to any of 4 (90 degree) positions. Each register incorporates a Low Flow Indicator for leak detection. Maximum continuous flow rates may be exceeded by 25% or more without damage to the unit. For extreme cases where water is laden with solid impurities, easily installed plate strainers are available for all sizes.

Long Service Life

These meters are specifically designed for exceptional performance at continuous operation at Q Max and occasional overranging. A thrust compensated rotor ensures extended life by balancing the load on the turbine shaft. Coupled with Ryton®/Fortron® (PPS) bearings, which are self-lubricating, component wear is minimized. Should the turbine require replacement, a Unitized Measuring Element (UME) assembly, which includes a register, provides added ease in maintenance, reduced downtime, and assured accuracy through factory calibration.

Simple Design

These units do not require elaborate timing mechanisms or difficult adjusting procedures. After factory calibration is not required due to remarkably close tolerances in manufacture along with single liquid measurement.