Last month, we looked at adjustable frequency AC drive system, induction motor speed control and motor application and performance. This month we will explore specific operation conditions, applications and performance.
Variable frequency drive technology is more efficient and accurate, which leads to increased energy savings.
Over the past 50 years, advances in technology have provided the primary thrust behind the success and evolution of variable-speed drive systems. Here are some considerations for the proper selection and set up of different types of systems, and what lies ahead in the future.
With the old mechanical displacers, level fluctuations ran 4-in to 5-in with a lot of hysteresis and frequent failures, causing operators to control at much higher levels than were optimal. New magnetic technology is changing all that. Here's how.
Why is "run to fail" a common operational strategy at water/wastewater organizations? Explore this phenomenon and other results from a maintenance methodology survey.
Low-cost additions help bottle maker manage compressed air use and energy costs on a shoestring.
While driving a car with the gas pedal to the floor and then controlling your speed using the brake is obviously inefficient, many facilities use the approach for pump control. Flow control with throttling or restrictive devices sacrifices energy efficiency and results in unnecessary costs. However, with an understanding of basic principles, an analysis of the specific application, information about available control solutions and evaluation of technologically advanced equipment, facilities can make a quantum leap in improving the efficiency and economy of pumping operations. pump efficiency
This municipal water system evaluated the cost of upgrading their existing SCADA software and decided it was time to consider replacements. After much research, it became clear that not only was it possible to get all the features they were missing; they could also do most of the configuration in-house.
Monitoring vibration—a valuable tool in predictive/preventive maintenance programs
Named after frontiersman Kit Carson, Carson City, Nev., is known for its fresh air, rugged natural surroundings and its proximity to the casinos of Reno and skiing in Lake Tahoe. Carson City, the capital of Nevada, has been a self-governing municipality since 1972. The Carson City Public Works Dept. manages all the water for Carson City and County. Its mission is to be completely self-sufficient-acquiring, using and reusing 100 percent of its own water.
Find the right flow meter for your process and plant.
Explore hermetically sealed gauging probes for hostile environments like saw mills and wood processing plants.
When selecting a pump for variable speed operation, a number of conditions must be evaluated.
Last month, we discussed thermal radiation and material properties and the thermal nature of materials. We also looked at the emissivity of real objects using a stainless steel block. This month, we will discuss other characteristics demonstrated by the steel block example.
A sewage lift pump that pumps millions of gallons per day simply can't go down. To prevent this from happening, this pair of electricians went about testing some new electrical systems for those pumps with a new insulation multimeter.
Find out why level controls can fail in municipal wastewater treatment plants and similar systems and what technologies are available to combat failure.
In the last decade, ultrasonic flowmeters have grown in popularity in laboratory and process areas as a cost-effective, noninvasive alternative for measuring the velocity and flow rates of liquids and gases.
Why question the PLC? For many, questioning the application of a PLC to the pump station panel is surprising. After all, the pump station panel was once controlled with a range of relays, timers, and other devices - the exact type of application where the PLC has had such success in industrial automation. pump efficiency
Explore the current condition of SCADA reports and some new technology that will improve the quality of those reports.
Pressure gauges are a versatile way to monitor pump operation.