flow control Articles | Environmental XPRT

Rotork, Redefining Flow Control

In 2010, when the well known international actuator manufacturer Rotork had its last cover story in Valve World magazine, the focus was on the company’s German office in Melle and the plans and developments for that location. In Rotork’s 2012 cover story, we shifted the focus to the Head Office in Bath, UK, and spoke to Mr. Richard Hudd, Marketing Director for Rotork Fluid Systems, ...

Dec. 1, 2012

By Rotork plc

EasiDrive Provides Safe, Economical Valve Operation, Ideal for Use in Oil & Gas Processing Industries

The EasiDrive portable valve actuator securely and effectively operates valves in oil refineries, power plants, paper mills and chemical processing facilities, even where adverse climates, such as arid and dry-desert environments, make operations more challenging. The combination of intense heat and a dry climate can make working conditions unfavourable; but with the EasiDrive, one operator ...

Jan. 25, 2013

By Smith Flow Control Ltd. (SFC)

Environics - Full-scale error vs. Setpoint error

A flow controller's accuracy is typically expressed as a percent of Full-Scale flow (%FS). This means that the flow controller is most accurate when operating at its rated full-scale flow rate. This also means that its accuracy, expressed as a percent of Setpoint, drops off significantly when operating at lower flow rates. For example, a 1000 cc/min flow controller with a +/- 1%FS accuracy, ...

Mar. 15, 2011

By Environics, Inc.

Biomedical research looks to thermal mass flow controllers

Precision control in biomedical research is critical for the success of any experiment. This is especially true for gas mixing and blending applications. These gas mixing applications often involve the creation of artificial atmospheres or other gas mixtures. To get statistically sound results, scientists must achieve precision flow control in creating these mixtures for sensitive experiments. In ...

Apr. 8, 2019

By Sierra Instruments, Inc.

Thermal spray gas flow control

How to Achieve a Consistent Flame and Avoid Problems High Velocity Oxygen Fuel (HVOF) thermal spray technology has evolved and advanced recently through the use of more sophisticated controls and design. In particular, the ignition and control of the flame has benefited from the use of actively controlled flow rates which deliver steady, consistent, and programmable flame characteristics and gas ...

Jan. 1, 2006

By Teledyne Hastings Instruments

Reliable Flow Control for Mainstream and Ancillary Offshore Applications

Rotork flow control products are used on oil and gas applications throughout virtually all upstream, midstream and downstream activities, ranging from offshore production facilities through refining and processing to transportation of finished products via pipelines or vessels. They deliver reliable and accurate performance, operating valves and controlling the flow in every area, often at high ...

Sep. 1, 2017

By Rotork plc

Rotork in Bath

Since the time of the Romans, flow control has played an important role in the culture of Bath and been a major contributor to the prosperity of the ...

Feb. 1, 2017

By Rotork plc

Innovation through synergy

As a specialist manufacturer of products for flow control, pressure control, flow measurement and pressure measurement serving diverse duties and a wide variety of applications, Rotork Instruments delivers solutions that are trusted wherever there is a need for high precision and ...

Nov. 1, 2015

By Rotork plc

Subsea valve actuation – reliability in depth

Subsea valve actuation is an important part of Rotork’s flow control activity. With an installed base dating from the early 1990s, operating at depths down to 2500 metres, Rotork Fluid Systems is familiar with supplying hydraulic actuator products to meet stringent subsea ...

Apr. 1, 2011

By Rotork plc

The ‘Swiss Army Knife’ of Mass Flow Controllers

Did you ever wish your mass flow controller could do it all? You’re not alone. End users ranging from machine builders to laboratory researchers are often faced with the challenge of needing flow measurement and control equipment for a wide variety of applications. Many customers call the SmartTrak 100 mass flow controller the “Swiss Army knife” of MFC’s. Finding a mass ...

Oct. 31, 2016

By Sierra Instruments, Inc.

Rotork Instruments announces new products and services

As a specialist manufacturer of products for flow control, pressure control, flow measurement and pressure measurement serving diverse duties and a wide variety of applications, Rotork Instruments delivers solutions that are trusted wherever there is a need for high precision and reliability. Process and plant engineering is an important industry sector served by the market-leading companies that ...

Mar. 1, 2016

By Rotork plc

Minute Flow Tip! Don’t Settle for “Good Enough

The capillary thermal technology used in every SmartTrak mass flow controller measures flow directly, at the molecular level. In essence, counting and controlling every gas molecule flowing through the instrument to achieve unmatched precision. Unaffected by upstream gas temperature and pressure fluctuations, gas mass flow control is direct and ...

Jul. 15, 2016

By Sierra Instruments, Inc.

A sensitivity-based approach for optimal location of multi-converter unified power flow controller considering its impact on generation and wheeling costs

The optimal location of Flexible AC Transmission Systems (FACTS) controllers is important due to their high cost. When a FACTS controller uses some converters, its cost becomes very high. A multi-converter unified power flow controller, also known as Generalised Unified Power Flow Controller (GUPFC) can effectively control the power system parameters such as bus voltage and real and reactive ...

Jun. 7, 2006

By Inderscience Publishers

How to Attain Precise CO2 Injection in the Carbonated Beverage Production Process

Looking for the perfectly carbonated beverage? Is your CO2 injection process leaving your drinks flat? Industrial mass flow controllers offer the perfect solution for controlling the exact CO2 injection into beverages to create the perfect foam for the beer industry or carbonation for popular soft drinks. It is pivotal that carbonated beverage manufacturers have the ability control the exact ...

Sep. 6, 2016

By Sierra Instruments, Inc.

Mass Flow Controllers Support Ventilator Testing

Precision Mass Flow Control Validates Ventilator Accuracy It’s actually a life and death matter, and we take this very seriously. Accurate mass flow control is crucial in the process of validating the accuracy of oxygen flow for mechanical ventilators and respiratory medical equipment. Ventilators are designed to pump oxygen into a patient that is breathing insufficiently or unable to ...

May 21, 2020

By Sierra Instruments, Inc.

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 ...

Jul. 27, 2015

By Teledyne Hastings Instruments

Providing Precision Flow Control Solutions for Critical Biomolecular Research

When scientists at the University of Nottingham’s Centre for Biomolecular Sciences (CBS) in the United Kingdom needed instrumentation to control the flow of gases in their research, they turned to Litre Meter, a UK distributor for Sierra Instruments, and the SmartTrak 100 series mass flow meters and controllers. The working relationship between Litre Meter and the CBS started more than 20 ...

Apr. 29, 2016

By Sierra Instruments, Inc.

Gas Mass Flow Control: Why Thermal Mass Flow Technology is Recommended for Best Accuracy!

It’s no secret. Price, but perhaps more importantly, performance, drive every new product acquisition you make. How important is measurement accuracy and control to your lab experiment or industrial process? It’s critical. If your flow readings are off or the flow is not controlled with precise accuracy your research is compromised, product quality suffers, and processes loose ...

Aug. 26, 2016

By Sierra Instruments, Inc.

Mass Flow Control in Bioreactors - Case study

Vogtlin mass flow controllers are an excellent tool for precise control of gas flows in bioreactors. Bio reactors are used for critical and delicate processes where mass flow control of relevant gases need to be reliable, repeatable and flexible. For example, the dissolved oxygen needs to be carefully controlled to obtain repeatable pH control and volumes of fermentation gases like CO and H2 ...

Jan. 2, 2019

By iCenta Controls Ltd

Process gas mass flow controllers - An overview

A mass How controller (MFC) is used 10 control the How of gases in a wide range of microelectronic processes. A well-designed MFC maintains a constant tlow within I percent of the full-scale flow, has a repeatability of 0.2 percent of full scale, and has a response time of 1 second to reach within 2 percent of the desired (command) flow, all of this is in response to any changes in command flow. ...

Apr. 11, 2019

By Sierra Instruments, Inc.

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