Articles and News
1,034 Results Found
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ISA announces registration call for 2018 ISA Water/Wastewater and Automatic Controls (WWAC) Symposium
To be held at the Hyatt Regency , from 7-9 August 2018 in Bethesda, Maryland, the event will include briefings by American Water Works Association (AWWA) and Water Environment Federation (WEF) officials, training opportunities, and a vendor exhibition that will showcase new products and services. -
Rotork to provide supply electric and pneumatic valve actuators and gearboxes to Chinese petrochemical facility
The latest contract involves approximately 2,000 explosion-proof electric actuators to operate gate valves and ball valves in tank farms. -
Rotork to provide supply electric and pneumatic valve actuators and gearboxes to Chinese petrochemical facility
The latest contract involves approximately 2,000 explosion-proof electric actuators to operate gate valves and ball valves in tank farms. -
Haydon Kerk Motion Solutions releases 2018 Catalog and Design Guide
The catalog and design guide illustrates a range of products engineered for use as building blocks in linear motion assemblies depending on the customers’ application needs. -
AutoQuiz: Plotting Control Valve Characteristics
For an equal percentage valve characteristic, each increment of valve movement provides the same percentage increase in flow. -
AutoQuiz: What Is the Cause of Cavitation in a Liquid Flow Stream?
When fluid drops below a liquid's vapor pressure, a gas is formed. As fluid moves downstream to where the fluid pressure is greater than the vapor pressure, it "collapses" back into a liquid. -
AutoQuiz: What Is the Liquid Flow Condition Where Falling Static Pressure Causes Formation of Vapor Bubbles?
The first stage of cavitation is the formation of vapor bubbles within the liquid system because of the fluid's static pressure falling below the fluid vapor pressure -
Asahi/America has releases 2018 version of Thermoplastic Valves, Actuation and Controls catalog
A resource for engineers, plant managers and distributors, this catalog provides customers with product specifications, dimensional information, Cv values, and pressure versus temperature ratings. -
AutoQuiz: Motor Shaft Speed Relationship to Frequency and Number of Poles
The shaft speed of a motor is directly proportional to the frequency and is inversely proportional to the number of poles. -
Endress+Hauser earns Frost & Sullivan Global Market Leadership Award for electromagnetic flowmeters
The Endress+Hauser product portfolio of electromagnetic flowmeters is designed for precise measurement of volume flow without restricting production flow rates or causing any pressure drop. -
VMA Report: Slight Growth for U.S. Valve Industry in 2018
The U.S. industrial valve industry will see growth of 1.45% in valve shipments in 2018, a rate that brings the value of those shipments up to $4.615 billion for the year. That rate of growth is slightly behind 2017 when it was 1.89%, which translated to shipments worth $4.549 billion. -
ISA announces 2018 Leak Detection and Repair/Fugitive Emissions (LDAR) Symposium
Designed exclusively to meet the needs of LDAR and air compliance professionals, the three-day event, to be held 5-8 March 2018 in Galveston, Texas, features a technical program and lineup of expert speakers as well as ISA-led training, a vendor exhibition and networking activities. -
Endress+Hauser announces opening of third Chinese plant
The plant will give the centers of competence for flow measurement engineering, liquid analysis and temperature measurement engineering additional capacity. -
Obsoleting the Absence of Voltage Test?
By Philip Allen, Grace Engineered Products Without question, the highest risk task for qualified electrical workers is creating an electrically safe work condition. Validated installation procedures for PESDs combined with LOTO procedures significantly reduces the likelihood that workers will be exposed to voltage when creating that electrically safe work condition. -
AutoQuiz: How to Calculate the Rated Torque for a Motor
The volts-per-hertz ratio (V/Hz) controls the torque of a motor. -
Rotork helps Kansas water treatment facility enhance electric valve actuators
In the gravity filter plant, 18 butterfly valves are situated in an area beneath a walkway which made it difficult to access and operate the old actuators. With the Rotork actuators, the installation of Remote Hand Stations (RHS) has now eliminated this problem. -
Kamstrup helps Iranian company enhance intelligent water meter solutions
In connection to Kamstrup’s visit in Iran, the company signed both a partner contract and an agreement of two pilot projects with the local Iranian company Iran Ensheab Co. The projects include intelligent water meters and remote reading system. -
How to Manage Pipeline Valve Positioner and PID Tuning
In general use the highest valve positioner gain that does not cause oscillation. For pipeline flow and pressure control, oscillations are not filtered. -
PWM-Switching Pattern-Based Diagnosis Scheme for Induction Motor Drives [Technical]
Research offers fault detection technique for insulated-gate bipolar transistors open-circuit faults in voltage source inverter-fed induction motor drives. -
SABIC turns to Yokogawa TDLS analyzers to enhance safety function and production
By Jon Moscovic, Lead Reliability Engineer, SABIC SABIC’s situation proved to be harder than most typical applications due to a mix of specific conditions. For many years operators struggled while working with paramagnetic and electrochemical cell sensors.







![PWM-Switching Pattern-Based Diagnosis Scheme for Induction Motor Drives [Technical]](/documents/d/acom/pwm-switching-pattern-based-diagnosis-scheme-for-induction-motor-drives.jpg)