Open channel flow monitoring is a method of measuring water flow rates in irrigation channels, streams, and storm water systems. It’s also used in wastewater processing for monitoring the effluent discharge. In most applications for open channel flow, weirs and flumes are used. For those of us not familiar, weirs and flumes concentrate the flow into a known cross sectional area, relating an accurate level reading to an accurate flow rate. The height of the water in the channel, going over the weir or flume, is directly proportional to the flow rate. Continue reading “Open Channel Flow Monitoring”
Irrigation is fundamental to the production of food all over the world. Most of us have seen the large center pivot systems used on many farms today, and there are a number of other technologies that are designed to deliver water to crops to allow them to flourish. Less prominent, however, are the systems that collect and deliver water to these irrigation systems to allow for crop growth. Continue reading “Well Water Monitoring for Irrigation Systems”
Electrostatic discharge (ESD) is a unique phenomenon that can be seen in everyday life. The effects of ESD can be seen by rubbing a balloon on your head, resulting in your hair sticking to the balloon, or by touching a doorknob or a pet in a dry building and receiving a static shock.
In irrigation, well water pumping, and pressure boosting applications, ESD can cause larger issues than just a small shock to your finger. Because plastics used in PVC pipes are insulators, the moving water builds up static electric charges. Eventually, this static electric buildup will discharge through an ungrounded pathway (e.g. instrumentation or sensors used to control a pump). Continue reading “ESD and Surge Issues in Pumping, Pressure Boosting, and Irrigation Applications”
For the past few years, questions about the safety of drinking water have constantly been in the news. Following the 2014 crisis in Flint, Michigan, cities across the U.S. launched their own investigations to determine whether their own drinking water supplies were safe. Drinking water is contaminated when old lead pipes corrode, allowing lead and other chemicals to enter the water supply. While lead is most dangerous when ingested, even outside of potable water applications there are still strict regulations regarding the materials and chemicals that may come in contact with water. This minimizes risk of contamination. Continue reading “Drinking Water Regulation”
Question: I have been searching for a pressure transmitter with an NSF 61 certification for my drinking water application. Does Dwyer have any recommendations? Continue reading “Ask the Expert – Series 626 & 628 Pressure Transmitters Offer Optional NSF Approval”