flow metering Articles
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FAQ Corner – What is turndown ratio?
We are occasionally asked for the turndown ratios of our flow meters and flow controllers. There are varying perceptions as to what this term actually means. The turndown ratio of a Mass Flow Meter (MFM) or Mass Flow Controller (MFC) defines the usable range for which it can operate while maintaining its published accuracy. It can be expressed using the following formula: A flow meter ...
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Flow metering of grains - Case Study
Product: ...
By ENVEA
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Sensor Probe Insertion/Retractor Simplifies Installation of Steam Flow Meters in Hot Tapping Applications
Accurately measuring fluid flows like steam in large ducts or pipes is a challenging application. Large ducts and pipes often have swirl or turbulent flow which makes accurate flow measurement difficult. Not to mention, installation of steam flow meters can be extremely challenging since in many cases you will need to shut off the steam flow to install the meter. This is just not practical. For ...
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Non-Contacting Flow Solution for Heap Leach Mining - Case Study
How do you measure the flow rate of a highly corrosive solution in a partially full pipe? Minera Escondida, the world's largest single producer of copper, was faced with this challenge in their heap leaching process in the Atacama Desert of northern Chile. Finding an accurate, reliable non-contacting flow meter was a difficult. But Greyline Instruments developed a unique area-velocity flow meter ...
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Attenuation of an ultrasonic beam by suspended particles and range of acoustic flow meters in sewer networks
Ultrasonic flow meters are commonly used in wastewater management. Under certain circumstances, a reduction in the flow meter range may occur and cause significant error in the flow rate measurement. Attenuation due to suspended particles is one of the phenomena capable of reducing the flow meter range. The present paper examines attenuation resulting from re-suspended pond sediment over a wide ...
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HFlow 1
Metal Powder Flowability Tester HFlow-1 powder flowability tester tests the flowability of metal powder by measuring whether the sample can flow through the 2.5mm standard funnel. The design and production of HFlow-1 Hall flow meter is based on the Chinese national standard GB / T1482-2010 and international standards ISO4490-2008. Measurement: Powder flowability Testing sample: metal powder ...
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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 ...
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Air Flow Meters to Measure Air Velocity and Air Pressure
Air flow meters are used to measure air velocity and air pressure. Depending on the type of application, air flow meters are made as hot-wire air flow meters or pocket weather flow meters, both of which can measure air velocity and air pressure. The results of measuring the air velocity can be stored in the memory of the device depending on the model. There are even data loggers for air velocity ...
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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 ...
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Making Ultrasonic Liquid Flow Meter Installation Easier
Ultrasonic transit-time flow meter technology is becoming one of the most adopted technologies for accurate liquid and energy/BTU measurement. Although a major benefit of the technology is that it is non-invasive and can be clamped to the outside of the pipe, an inherent challenge with ultrasonic clamp on liquid flow meters is finding the best location to measure the liquid. This means ...
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Flow metering of quicklime in free fall - Case Study
Client: Knauf Marmorit GmbH, Bollschweil (Germany) Product: Quicklime Conveyed volumes: 6...15 t/h Conveyor mechanism: Conveyor screw Installation location: Free fall after quicklime mill What measuring process was used previously: With an impact plate scale According to the client, the system offers the following advantages over the formerly used methods: More compact than the ...
By ENVEA
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Effect of Doppler flow meter position on discharge measurement in surcharged manholes
Determining the proper installation location of flow meters is important for accurate measurement of discharge in sewer systems. In this study, flow field and flow regimes in two types of manholes under surcharged flow were investigated using a commercial computational fluid dynamics (CFD) code. The error in measuring the flow discharge using a Doppler flow meter (based on the velocity in a ...
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For Vortex Flow Meters, accuracy matters in steam energy flow measurement
The heat is on. Most facilities managers are in the hot seat to account for all of the flow energy, going in and out of their facility which is no easy task. This mandate is no different for steam flow measurement. Vortex flow meters continue to be the industry standard for accurate steam flow measurement. Despite this fact, there is a common debate about vortex mass flow meters versus ...
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Capillary Tube Thermal Mass Flow Meters & Controllers - A User`S Guide - White Paper
Abstract Capillary tube thermal mass flow meters directly measure the mass flow rate of clean gases and gas mixtures in lower flow ranges. A capillary tube thermal mass flow controller adds an integrally mounted flow control valve to the flow body of the mass flow meter and bom monitors the mass flow rate and controls it to be equal to a set-point value selected by the user. This paper ...
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HFlow 1
Metal Powder Flowability Tester HFlow-1 tests the flowability of metal powder by measuring whether the sample can flow through the 2.5mm standard funnel.The design and production of HFlow-1 Hall flow meter is based on the Chinese national standard GB / T1482-2010 and international standards ISO4490-2008.Powder flowability measurement: Powder flowabilityTesting sample: metal powderTechnology: Hall ...
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How Does a Water Flow Meter Work?
A flow meter works by measuring the amount of a gas, liquid or steam that passes through or around the flow meter sensors. While flow meter sensors work in many different ways, the end goal is the same: Deliver the most accurate and repeatable flow measurements for the specific application, whether for general research, process control or semiconductor processing. Flow meters measure either mass ...
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HFlow 1 Metal Powder Flowability Tester
HFlow-1 tests the flowability of metal powder by measuring whether the sample can flow through the 2.5mm standard funnel. The design and production of HFlow-1 Hall flow meter is based on the Chinese national standard GB / T1482-2010 and international standards ISO4490-2008. Powder Flowability Measurement: Powder flowability Testing sample: metal powder Technology: Hall flow meter As the leading ...
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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 ...
By TRACOM Inc.
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Now Measure All Flow Energy in Your Facility - One Solution - Three Metering Technologies
Facilities managers at large facilities often have the challenging task of managing all the flow energy in their facility with the mandate from upper management to save money on energy costs. To accomplish this goal, it’s critical to get accurate flow measurement data of the flow energy in your facility such as: natural gas, compressed air, steam, chilled and hot water. The next ...
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Flow metering of saw dust in free fall - Case Study
Material: saw dust Installation location: in free ...
By ENVEA
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