ultrasonic flow monitoring Articles

Choosing flow monitors for CEMS applications

As a result of the 1990 Clean Air Act Amendments1, electric power plants must reduce their emissions of sulfur dioxide and nitrous oxides—the primary causes of acid rain. The U.S. Environmental Protection Agency (EPA), in its proposed rules2, designates the 111 Phase I fossil-fueled plants ^roughly 268 boiler units) that must have continuous emissions monitoring systems (CEMS) installed, ...

Apr. 10, 2019

By Sierra Instruments, Inc.

NIVUS Pipe Sensor vs. Mag Meter

The benefits of using our solution are numerous, in terms of ease of use, accuracy, cost, time and low carbon footprint so to offer a direct comparison to the usual time and cost implications of traditional Mag Meter replacement water companies typically incur significant costs namely excavation, over pumping and related downtime often making such projects even cost prohibitive. NIVUS Cross ...

Feb. 19, 2013

By NIVUS GmbH

Using new electrodynamic cross-correlation technology for flow measurement in stacks

Abstract Continuous flow measurement is often performed in industrial stacks to enable emissions to be converted from units of concentration to units of total mass over a given period. This requirement has increasing importance with the advent of emission inventories which industry and regulators are starting to maintain. The traditional flow measurement techniques for stacks are averaging ...

Oct. 6, 2014

By Environmental Technology Publications Limited

Core technology part 2: transit-time ultrasonic

Since the introduction of ultrasonic transit-time flow meters, manufacturers have continually improved their measurement and signal processing capabilities. Recent advances in digital correlation transit-time technology allow customers to use this convenient, non-intrusive installation to address some of the more challenging flow applications. Ultrasonic flow meters are divided into two ...

Jan. 8, 2009

By Sierra Instruments, Inc.

Introducing Our New InnovaSonic 207i Ultrasonic Liquid Flow Meter

For Liquid Flow Metering, Optimized for Thermal Energy/ BTU Sierra is proud to announce the new InnovaSonic 207i ultrasonic liquid flow meter with thermal energy/BTU capability. Designed, built and calibrated by Sierra in Monterey, California for non-intrusive liquid flow metering, and optimized for thermal energy/BTU measurement, the 207i transit-time ultrasonic flow meter is the ideal turnkey ...

May 15, 2017

By Sierra Instruments, Inc.

Municipal sewer remote monitoring

Sewers are critical heavy duty infrastructure components requiring costly maintenance. Many municipalities suffer from ageing pipelines that pose higher chances of failure. Sewer leak or overflow results in high cost as a result of civil reimbursement and due to inflected illness. Moreover Civilian frustration that results form the overflow is often targeted towards the municipality. Overflow can ...

Jul. 27, 2009

By Solid Applied Technologies Ltd. (SolidAT)

The all NEW TunnelTech 305 Air Flow Monitor

With over 30 years’ experience in the tunnelling market, CODEL are excited to have recently launched the 6th generation single point flow monitor utilising the very latest ultrasonic technology. CODEL’s tunnel monitoring products simplify the challenge of sourcing, installing and maintaining a highly accurate and reliable tunnel monitoring solution. The TunnelTech 305 offers low ...

Dec. 13, 2019

By Codel International Ltd

How an Ultrasonic Flow Meter Works

An ultrasonic flow meter utilizes ultrasound to measure the velocity of a fluid and is used in a variety of fluid applications. Ultrasonic flowmeters are ideal for water and other liquids. Clamp-on ultrasonic flow meters achieve high accuracy at low and high flows, save time with no pipe cutting or process shutdown, and are not affected by external noise. Here’s how ultrasonic flow meters ...

Dec. 5, 2017

By Sierra Instruments, Inc.

How Does a Water Flow Meter Work?

A water flow meter is a device that measures the amount of water flowing through a pipe. There are several water flow meter technologies to choose from depending on the water measurement application, maintenance requirements, and budgetary terms. Each of these types of water flow meters has a unique principle of operation, specific application benefits, and overall cost-of-ownership. The ...

Oct. 27, 2017

By Sierra Instruments, Inc.

Modern gas flow monitoring practices: a review of ULSTR-sonic systems within CEMS applications

1. Introduction Originally TA LUFT and later USA EPA regulations required emissions reporting on a daily mass basis. This stimulated the development of continuous flow monitors to allow accurate determination of mass emissions. At present in the UK, annual tonnages for particulates, SO2 and NOx are calculated using a factor for m³ flue gas per kg fuel burned. It is envisaged that future EC ...

Oct. 6, 2014

By Environmental Technology Publications Limited

Flow Rate Measurement in Full Pipes Using the Transit Time Method

Particularly in large diameters the relevance of water volume measurement is growing. The challenge with cooling water or fresh water processes is to generate accurate flow recordings or to document and to control individual consumptions and withdrawal quantities. Flow detection, however, particularly in large diameters is highly demanding. In such cases the transit time measurement thanks to its ...

Mar. 21, 2017

By NIVUS GmbH

OTT ADC measurement - Germany

Background As the open pit Cottbus Nord is making use of the water of the ponds in the protected landscape of Lakoma (a village 6 km from Cottbus) the Vattenfall Europe Mining AG (VEM) as owner of the pit was obligated to take compensation measurements. VEM entrusted the engineers of the gerstgraser Ingenieurbüro für Renaturierung (gIR) in Cottbus with the planning of the structuring ...

May 6, 2010

By OTT HydroMet

Online flow measurement

Background The undershoot weir in Hohensaaten was built in 1913. It has three openings and regulates the discharge from the Oderbruch and from the Finow canal into the Hohensaaten-Friedrichsthaler-waterway. Moreover, it protects parts of the Oderbruch against Oder floods. The weir controls the waterlevels in the Havel-Oder-waterway and in the reach of Niederfinow- Hohensaaten. The weir was ...

May 6, 2010

By OTT HydroMet

Accurate management of waste water flow case study

SmartScan 50O provides an accurate ultrasonic solution for flow measurement of waste water in a nation-wide advanced treatment plant. This wastewater treatment plant is located just outside a pop. 1 Million City. The plant provides wastewater treatment services for the municipality since 1999. The plant utilizes the latest technology of wastewater treatment that enables purification of ...

Jan. 12, 2012

By Solid Applied Technologies Ltd. (SolidAT)

The Function of an Ultrasonic Flow Meter

Running a water management operation requires taking a wide range of measurements. In addition to measuring the flow in your system, many systems must measure the water level of their channel, and one of the best tools for accomplishing this goal is an ultrasonic flow meter. If you’re considering using an ultrasonic flow meter in your operation, it’s a good idea to learn how this ...

Aug. 14, 2017

By TRACOM Inc.

Online measurement with OTT SLD and LogoSens2

Background The drill called „Wallensteingraben“ connects the Lake of Schwerin with the Hanseatic city Wismar, ending in the Baltic Sea. The Wallensteingraben was originally constructed as channel and is almost 20 km long. In the context of implementing the European Water Framework Directive its ecological passability shall be improved. At the measurement site „Rothentor“ a weir system was ...

May 6, 2010

By OTT HydroMet

Two Technologies for Flow Measurement from Outside a Pipe

Doppler and Transit Time are two very popular types of flow meter for non-invasive measurement of flow in full pipes. We tend to confuse these technologies because they are both ultrasonic and both measure flow by using sensors clamped onto the outside of a pipe. In the real world they actually work best in opposite applications. Success in your installation depends on understanding the ...

Jul. 31, 2012

By Greyline Instruments Inc.

Gas Mass Flow Metering - Innovations Promise More Economical Choices- White Paper

Introduction As the drive towards energy independence in the United States continues at full speed, oil and gas companies are turning to hydraulic fracturing to increase production. Increasingly stringent state and national regulations for flare gas in particular now require the installation of mass flow measurement instruments to measure waste and excess gases burned off as a result of the ...

Jun. 9, 2014

By Sierra Instruments, Inc.

How Does a Water Flow Meter Work?

A water flow meter works by measuring the amount of water that passes though the flow meter. The most common mechanical types work by measuring the speed of flowing water that causes a turbine or piston to rotate. The volumetric flow rate of the water is proportional to the rotational speed. Other water flow meters include ultrasonic, magnetic and vortex flow meters. The best type of water flow ...

Aug. 15, 2017

By Sierra Instruments, Inc.

Open Channel Flow Monitors retired after 16 years continuous service - Case Study

Long Sault WWTP Influent Flow Monitors Greyline Open Channel Flow Monitors were installed at the Wastewater Treatment Plant in Long Sault, Ontario when the SBR plant was originally commissioned in 1995. But after 16 years of continuous service, components for the old models became obsolete. Plant operators Caneau Water and Sewage Inc. decided to replace the instruments and new Greyline OCF 5.0 ...

Aug. 11, 2017

By Greyline Instruments Inc.

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