RALEIGH, NC - November 10, 2009
The Sensus accuWAVE™ diaphragm meter family is expanding. The model 415 meter with accuWAVE diaphragm technology will be released in the first quarter of 2010. The model 415, a Class 400 meter size, serves larger residences with higher heating loads as well as commercial and light-industrial applications. Its release comes on the heels of the Class 250 meter, the R275 with accuWAVE diaphragm that is designed for typical residential service, which was released earlier this year.
About the accuWAVE™ Diaphragm and Diaphragm Technology
The diaphragms in a diaphragm meter are comprised of an elastomeric material that moves in and out to pass known volumes of gas through the meter. Over the life of a meter, its diaphragms may perform millions of cycles. The meter diaphragms have a long life-cycle, so that a meter can stay in service for decades. The volume that the diaphragms contain over this time span must be consistent; ensuring gas flowing through the diaphragms is measured accurately. The patent pending accuWAVE diaphragm design achieves this long life and accuracy better than previous designs and better than any other diaphragm designs tested by Sensus. The diaphragm material is a Buna-Nitrile compound suffused with high-strength reinforcing fibers. The material is compression molded to exacting tolerances, a contrast to the widespread current practice of cutting diaphragms from flat sheets of Buna-Nitrile that are made with a woven reinforcing fabric. These cut blanks are then formed via a heat-shaping process into the classic diaphragm shape. The accuWAVE diaphragm shape is molded into a series of nesting ridges and troughs. Expansion and contraction motions are smooth and uniform, similar to the movement of a stereo speaker. The accuWAVE diaphragm is characterized by a concentric, uniform motion. The combination of material, molding process, and final shape results in a diaphragm that is free from the residual stresses of molding a two-dimensional fabric into a three-dimensional shape.
Sensus is a time-tested technology and communications company providing data collection and metering solutions for water, gas and electric utilities around the world. Sensus is a transforming force for the utilities of tomorrow through its ability to help customers optimize resources, as well as to meet conservation and customer service objectives. Sensus customers rely on the Company for expert, reliable service in order to meet challenges and exceed goals.Download PDF