Current Meters Articles

  • History of the switches, the ancestor of the micro switch

    We know that a micro switch is the mini version of a switch so we cannot speak of the origin of one without mentioning the other. The micro switch manufacturer, at the beginning knew very well that their product underwent many changes to become what it is today, since its beginnings were much simpler (in terms of functions to fulfill) unlike what it does now. ...

  • Remote Ocean Sensing by HF Radar

    Coastal radar has become an increasingly important monitoring tool for hazard management and environmental protection During the past few years remote ocean sensing by HF (highfrequency) radar has become more and more valuable to modern coastal management. lt offers an insight into the dynamics of the coastal seas for a variety of applications without ever leaving dry land. For example, search ...


    By Helzel Messtechnik GmbH

  • Something for Nothing hits pay dirt! - Case Study

    Challenge: During a scheduled inspection of a facility for a major food processor a number of deficiencies were identified and documented including  one ultrasonic class problem within a 12,470 VAC safety disconnect switch (similar to Figure #1 below) feeding a primary side of a main service, oil-filled transformer with a 480 VAC secondary. This was one of two major components that did ...


    By UE Systems Inc

  • Identifying rAAV Residual Impurities with LC-MS - Case Study

    Gene therapies involving recombinant adeno-associated viral (rAAV) vectors have been approved by FDA, EMA, and used in well over 100 clinical trials, demonstrating efficacy against many genetic diseases. Improvements to ...


    By Charles River

  • Understanding NDT of Carbon Fiber

    Carbon fiber has become an important material in the aerospace industry in recent years. It provides flexible and durable properties for civilian and military aircraft, but it’s susceptible to hidden cracks that stem from manufacturing defects or heavy stress. Luckily, advanced NDT techniques such as ultrasonic testing of carbon fiber allow analysts to detect internal cracking and other ...


    By Zetec, Inc

  • Causes and Judgments of the Drill Pipe Slipping during the Use of Large Drilling Rigs

    1. Cause of failure The jumbo drill rig pipe is fixed to the main hoisting reel by a wire rope. The drill pipe can be raised or lowered as the roll is rolled or the wire rope is placed. The power of the reel comes from the main hoisting motor that has been decelerated several times. Its stopping is achieved by means of a ...

  • Hioki Launches AC Clamp Meter CM3281 and CM3291

    Introducing AC Clamp Meter CM3281 and CM3291 - a Pair of AC Ammeters Engineered to Accommodate Large-Diameter Cables with All the Ease of Use You’ve Come to Expect from Hioki Hioki is pleased to announce the December 2019 launch of the AC Clamp Meter CM3281 and CM3291, a pair of large-diameter AC ammeters featuring a more compact jaw (sensor) design that makes them easier to insert ...


    By Hioki USA Corporation

  • VIDEO: The `Interceptor` could turn the tide on plastic pollution

    Developing a scalable, solar solution for plastics With 1000 rivers responsible for nearly 80 per cent of all pollution entering the oceans, efforts are underway to turn the tide on plastics. Dutch non-governmental organisation the Ocean Cleanup has developed what it’s calling the first “scalable solution to efficiently intercept plastics in rivers before it reaches ...


    By Aquatech Global Events

  • Animals could help humans monitor oceans

    Sharks, penguins, turtles and other seagoing species could help humans monitor the oceans by transmitting oceanographic information from electronic tags. Thousands of marine animals are tagged for a variety of research and conservation purposes, but at present the information gathered isn't widely used to track climate change ...


    By University of Exeter

  • Ensuring lithium ion battery safety in the Black Friday electrical goods scramble

    Black Friday is a huge date in retailers’ calendars. According to the NRF, the Black Friday weekend in the US runs from Thanksgiving to Cyber Monday and in 2018, Thanksgiving Day alone generated $3.7bn in online sales. And bargains in electrical and hi-tech goods are high on consumers’ shopping lists around the globe. Just over 50% of consumers ...

  • What is Equipment Grounding

    Classification of Equipment Grounding Earthing refers to the connection between neutral points of power system and electrical devices, exposed conductive part of electrical equipment and outer conductive part of equipment. Equipment grounding can be divided into working grounding, lightning protection ...

  • Balancing Valve Types

    Balancing valve types   1. Static Balance Valve: It is also called Balance Valve, Manual Balance Valve, Digital Lock Balance Valve, Double Position Regulating Valve, etc. It changes the flow resistance through the valve by changing the clearance (opening) between the spool and the seat to achieve the purpose of ...


    By ZhengFeng Valve Group

  • Balancing valve working principle

    Balance valve is a dynamic and static balancing valve under hydraulic conditions. Such as static balance valve, dynamic balance valve. Valve body material: cast iron, cast steel, Work pressure is 0.6-4.0 MPA. The working temperature is - 5 C - 350 C. Valve caliber DN15-DN300, Connection mode: flange, internal thread, Driving mode: manual and electric. Manufacturing standard: ...


    By ZhengFeng Valve Group

  • Balancing valve working principle

    Do you know differential pressure control valve working principle? Balance valve is a dynamic and static balancing valve under hydraulic conditions. Such as static balance valve, dynamic balance valve.Valve body material: cast iron, cast steel,Work pressure is 0.6-4.0 MPA.The working temperature is - 5 C - 350 C.Valve caliber DN15-DN300,Connection mode: ...


    By ZhengFeng Valve Group

  • Rogowski Coil Current Sensing Method

    In an earlier blog post, we introduced the 6 different current sensing methods used in the current meters and sensors developed by Hioki. Here, we highlight the Rogowski coil method that enables the design of flexible sensors through the use of an air core (or coreless) structure. In a Rogowski sensor, there is no heat ...


    By Hioki USA Corporation

  • Classification of Balanced Trim Control Valves

    Balanced trim control valve are usually divided into static balance valves, dynamic flow balance valves and dynamic differential pressure balance valves. A. ...


    By ZhengFeng Valve Group

  • Reducing fire and explosion risk of lithium-ion batteries

    On the 7th January 2013 cleaning staff onboard a Boeing 787 aircraft noticed smoke in the rear cabin. Closer inspection by a mechanic discovered a fire originating from the lid of the APU battery case. Fortunately, the plane was parked at Logan International Airport, USA, at the time, so none of the 183 passengers and 11 crew were hurt. Nine days later, on 16th January 2013, a Boeing 787 had to ...

  • ToughSonic sensors teach dynamics at Duke

    Mechanical engineers at Duke University are finding that Senix ToughSonic® 14 sensors are the ideal tool for conducting hands-on experiments in dynamics. According to Pat McGuire, senior laboratory engineer in Duke’s Mechanical ...


    By Senix Corporation

  • Hunter Water’s largest treatment plant installs Logmax® Clarifier with Edigate® dispersion inlet - Case study

    The Burwood Beach WWTP is the largest sewage treatment system that Hunter Water operate, with a processing capacity of 44 million litres per day, or up to a population equivalent of 190000. A recent upgrade included the installation of a new secondary clarifier system. EPCO Australia were awarded the design, fabrication, installation and commissioning of a 33M diameter peripheral drive clarifier ...


    By Hydroflux Pty Ltd

  • Balancing valve working principle

    The differential pressure control valve working principle Balance valve is a dynamic and static balancing valve under hydraulic conditions. Such as static balance valve, dynamic balance valve. Valve body material: cast iron, cast steel, Work pressure is 0.6-4.0 MPA. The working temperature is - 5 C - 350 ...


    By ZhengFeng Valve Group

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