Flow Measurement
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Water supply FLOW MEASUREMENT Pioneers in sustainable energy and water management

Ready for the future The world’s population is growing beyond 8 billion and with it the global demand for electricity and water. Integrated solutions from a single source Efficient and sustainable use of water resources is more important than ever before – now and for the generations to come. With more than 100 years of expertise in high-end instrumentation solutions for demanding applications, Rittmeyer has contributed to a sustainable environment for generations and is an acknowledged partner in the worldwide industry for efficient, sustainable and economic management of water and energy...

Penstock leak detection Total flow calculation Turbine efficiency monitoring Sediment monitoring Rittmeyer flow measurement systems are extremely precise and durable also under though conditions. Their versatility allows for a broad range of smart applications. Your benefits ■ Efficiency – higher return on investment ■ Predictive maintenance – lower operation costs ■ Safety – responsible care & peace of mind ■ Sustainability – responsible consumption and

Gate discharge measurement Channel flow measurement Flow measurement in pipes, tunnels, and channels (from head to tail race) for largedown to micro-scale hydropower plants including pumped storage and run-of-river. Flow measurement in discharge pipes for cleaned water to be released for human consumption or industrial and environmental use. Water supply Flow measurement in various waterways for the versatile water industry. From rivers, to large channels, down to small pipes, total flow calculation is made easy to ensure the efficient transportation and distribution management. Flow...

Importance of flow measurement Importance of flow measurement Flow measurement enables efficient, ecological and sustainable management of water resources and increases safety for people and environment – topics ever more important on the agenda of humanity. Typical applications The fields of application for flow measurements in hydropower, water supply, irrigation, and wastewater are versatile: ■■ Efficiency monitoring and optimization consumption monitoring & billing ■■ Protection of tunnel and pipe systems ■■ Water transportation and distribution management ■■ Water detection of leakages...

Importance of flow measurement Filled pipes A wide range of filled pipes in different shapes and dimensions are in use. Rittmeyer provides highest accuracies in all situations: ■■ Exposed, buried, conduit, horseshoe and gallery pipes ■■ Diameters from 0.08 m to a theoretical maximum of 52 m Partially filled pipes Typical applications with partially filled pipes are measurements in tunnels or sewage drains. Open channels and rivers For water supply and irrigation purposes, open channels with a wide range of dimensions and profiles are in use. Rittmeyer provides solutions for widths of up to

Measurement methods Measurement methods Different measurement methods can be used to determine flow: ■ Direct method with ultrasonic signal processing, absolute measurement ■ Indirect method with linearization curves and level transmitters, relative measurement Ultrasonic transit time method This method requires at least one pair of ultrasonic transducers to form an ultrasonic path which measures the flow velocity of water and calculates the flow and volume information. The average water flow velocity along the path is measured by emitting and receiving ultrasonic pulses, in both forward...

Measurement methods Differential pressure measurement (Winter-Kennedy method) A constriction of the pipe profile, i.e. near a turbine, increases the velocity of the water and causes a pressure drop. The differential pressure between two points with different cross sections is measured. Based on this, the flow is calculated using either a mathematical function or a reference table. This method is commonly used in hydraulic engineering. costs are largely independent of the pipe diameter ■■ Pressure taps are often already available, simplifying the installation process Flow determination in...

Advanced applications Advanced applications Various advanced applications are combined into one Rittmeyer solution. Thanks to that, hardware and instrumentation components can be reduced to a minimum – for maximum efficiency and cost savings. Rittmeyer combines 4 smart applications in 1 device: ■■ Flow measurement efficiency monitoring ■■ Penstock leak detection ■■ Sediment monitoring ■■ Turbine Turbine efficiency monitoring With the Rittmeyer turbine efficiency monitoring application, power plant operators can reliably determine temporal changes in turbine efficiencies by using...

Advanced applications With Rittmeyer instrumentation systems, our power generation has been increased by 3 %. James A. Besha Jr. P.E., Stuyvesant Falls Hydroelectric Plant Penstock leak detection The unique concept of the Rittmeyer penstock leak detection system (PLDS) allows for early detection of leaks, thus maximizing public and environmental safety. With high-precision flow measurements at both ends of the penstock, leaks and ruptures of the penstock can be quickly identified. As an alternative to the ultrasonic measurement at the lower end of Gate control Modbus TCP / RTU...

Advanced applications Sediment monitoring When it comes to plant operation, maximum productivity comes first. Suspended solids and sediments in the water can lead to damages on installed equipment. Even the smallest impairment can severely decrease turbine efficiency. It is imperative to detect damages at an early stage to prevent high costs from expensive power generation outages and time- onsuming replacements of damaged turbine parts. c The amount of suspended particles in the water can be monitored with Rittmeyer ultrasonic measurements. Based on the signal attenuation, the sediment...

Advanced applications Gate discharge measurement Through the combination of angle or position transmitters with one or two pressure transmitters, a long-term stable measurement of the gate discharge can be realized for various gate types, such as radial, tainter, crest, slide, roller, sluice, and lock gates. With built-in processing rules of Rittmeyer angle and position transmitters and the measuring results from the level transmitters, the flow can be reliably calculated. This measurement is an autonomous solution and can be connected to a SCADA, if required. Your benefits ■■ Autonomous...