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updatemarketanalysisreport · 3 years

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Digital Multimeter Market Share, Size, Growth, Competitive Analysis with Key Players, Outlook, Demands and Forecast

According to the latest report by IMARC Group, titled “Digital Multimeter Market: Global Industry Trends, Share, Size, Growth, Opportunity and Forecast 2021-2026,” the global digital multimeter market size is expected to grow at a CAGR of around 7% during 2021-2026. Digital multimeters (DMMs) are testing tools used for measuring two or more electrical values such as voltage (volts), current (amperes) and resistance (ohms). They perform tests on the operation of diodes, transistors, or electrical continuity. In addition to this, they are portable, and their digital or liquid crystal display (LCD) have no moving parts, thereby making them free from wear and shock failures. DMMs are rapidly replacing analog meters due to their ability to measure different parameters with greater accuracy, reliability and improved impedance. As a result, they are widely utilized for troubleshooting various electrical issues in industrial as well as domestic devices, such as motor controls, power supplies and wiring systems.

As the novel coronavirus (COVID-19) crisis takes over the world, we are continuously tracking the changes in the markets, as well as the purchase behaviors of the consumers globally–our estimates about the latest market trends and forecast values after considering the impact of this pandemic.

Request Free Sample Report: https://www.imarcgroup.com/digital-multimeter-market/requestsample

Global Digital Multimeter Market Trends:

Rapid industrialization, in confluence with the burgeoning electronics industry, represents one of the significant factors propelling the growth of the digital multimeter market. The boosting sales of electronic devices across different industry verticals has positively influenced the demand for these devices among professionals. Apart from this, owing to the various technological advancements in the production process, manufacturers are incorporating other measuring instruments, such as insulation testers and infrared thermometers in DMMs. Other features, including dielectric absorption, polarization index and earth-bond resistance are also being included in these devices to offer improved efficiency and user-friendly experience. Furthermore, on account of their cost-effectiveness and multi-functionality, DMMs are increasingly being preferred over voltmeters and ohmmeters. Besides this, the increasing trend of digitalization is also strengthening market growth.

Ask Customization and Browse Full Report with TOC & List of Figure: https://www.imarcgroup.com/digital-multimeter-market

Key Market Segmentation:

Competitive Landscape with Key Player:

Agilent Technologies

Anritsu

Danaher

Rohde & Schwarz

Tektronix

Adlink Technology

Aeroflex

Ametek

Giga-tronics

National Instruments

Rigol Technologies

Teledyne LeCroy

Teradyne

Yokagawa Electric

Breakup by Product Type:

Handheld

Bench-Top

Mounted

Others

Breakup by Functionality:

Auto Ranging

Clamp Digital

Fluke Digital

Others

Breakup by End-Use Industry:

Automotive

Manufacturing

Energy

Utility

Others

Breakup by Region:

North America

Europe

Asia Pacific

Middle East and Africa

Latin America

Key Highlights of the Report:

Market Performance (2015-2020)

Market Outlook (2021-2026)

Porter’s Five Forces Analysis

Market Drivers and Success Factors

SWOT Analysis

Value Chain

Comprehensive Mapping of the Competitive Landscape

If you need specific information that is not currently within the scope of the report, we can provide it to you as a part of the customization.

Related Report:

Virtual Reality Market Report 2021-2026

United States E-Cigarette Market Size

Concrete Superplasticizer Market Research Report 2021-2026

Flip Classroom Market company 2021-2026 share

About Us:

IMARC Group is a leading market research company that offers management strategy and market research worldwide. We partner with clients in all sectors and regions to identify their highest-value opportunities, address their most critical challenges, and transform their businesses.

IMARC’s information products include major market, scientific, economic and technological developments for business leaders in pharmaceutical, industrial, and high technology organizations. Market forecasts and industry analysis for biotechnology, advanced materials, pharmaceuticals, food and beverage, travel and tourism, nanotechnology and novel processing methods are at the top of the company’s expertise.

Contact Us: IMARC Group 30 N Gould St, Ste R Sheridan, WY (Wyoming) 82801 USA Email: [email protected] Tel No:(D) +91 120 433 0800 Americas:- +1 631 791 1145 | Africa and Europe :- +44-702-409-7331 | Asia: +91-120-433-0800, +91-120-433-0800

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dailynewswebsite · 4 years

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Best Argos Black Friday deals 2020: Early offers on laptops, Apple watches and Dyson vacuums

Whether or not you’re on the lookout for a Fitbit health tracker or Shark hoover, that is the sale to look at

(The Unbiased)

Black Friday 2020 is almost right here, with only one week to go till the principle occasion.

The massive day falls on 27 November, and whereas retailers have a tendency to start out their presents every week forward of the occasion, this 12 months we’ve seen pre-sale offers launch sooner than ever earlier than.

Retailers together with Amazon, Very, John Lewis, Apple, Currys PC World, Boots and Superdrug kicked off their reductions weeks forward of Black Friday itself, so there’s hundreds of offers already stay.

Fortunately at IndyBest we’re doing all of the arduous be just right for you by updating our Black Friday guides each day with the very best presents throughout throughout TVs, tech, gaming, laptops, house home equipment, youngsters toys, furnishings, style and wonder.

British retailer Argos held out till right this moment to unveil its Black Friday presents, however now they’re lastly right here, and also you gained’t wish to miss them.

Under we’ve listed all the very best financial savings so removed from a variety of high manufacturers, so you may get your Christmas purchasing achieved with just some clicks, all whereas staying cosy at house. We’ll be updating our information on daily basis main as much as the occasion, all through Black Friday itself and on to Cyber Monday too, so be sure you bookmark this web page and verify again.

Whether or not you’ve after a brand new vacuum cleaner or hair dryer, these are the very best early Argos presents to buy now.

Our IndyBest crew hand-picks each deal we function. We might earn some fee from the hyperlinks on this article, however our alternatives have been made independently and with out bias. This income helps to fund journalism throughout The Unbiased.

The very best early Argos Black Friday offers

Shark Anti Hair Wrap Cordless Vacuum Cleaner: Was £349.99, now £199.99

Shark

Save £150 on this cordless vacuum from Mrs Hinch’s favorite house equipment model, Shark. It may be used on arduous flooring, wool rugs, carpet, upholstery and stairs, promising 40 minutes of run-time. There’s a versatile wand which can let you attain these nooks and crannies underneath furnishings. The coveted anti hair-wrap expertise removes hair from the comb head as you clear, so there’s no blockage or construct as much as gradual you down. It’s a model that featured in our assessment of the very best vacuum cleaners for pet house owners, so we are able to testify to its credentials. Argos claims that is its lowest worth ever.

Story continues

Purchase now

Fitbit Cost Four Health Tracker: Was £129.99, now £99.99

Fitbit

Save £30 on this sensible watch from the main health tracker model, Fitbit. Obtainable in 4 colors, the waterproof gadget presents options together with sleep monitoring, built-in GPS, a coronary heart price monitor and the model’s newest train modes.

Fitbits’s merchandise featured twice in our assessment of the very best health trackers, with our reviewer praising the sooner model of this discounted mannequin, the Fitbit cost 3, for its intelligent options. They mentioned: “In contrast to many trackers, this one is monitoring your coronary heart price repeatedly reasonably than simply throughout exercises. In addition to looking for well being tendencies it additionally offers data throughout exercises to assist perceive them higher. The sleep monitoring can also be glorious, measuring REM sleep in addition to deep and light-weight.”

Purchase now

Dyson V8 Absolute Additional Cordless Vacuum Cleaner: Was £399.99, now £299.99

Dyson

The Black Friday gross sales are the very best time to bag a discount from Dyson, whose merchandise don’t come low cost. There’s £100 to save lots of on this mannequin which might deep clear carpets and arduous flooring, providing 40 minutes of use on a full cost.

It has a tender curler cleaner too, which claims to choose up massive particles and fantastic mud in a single go, and comes with 4 cleansing instruments for cleansing stairs, upholstery and automobiles, so that you’ll make sure you get sufficient use out of it. If you happen to wanted any extra convincing, an analogous mannequin, the Dyson V11 absolute, additionally topped our assessment of the very best cordless vacuum cleaners, with our tester describing it as “mind-blowingly good” including that it has “significantly raised the bar on the earth of cordless vacs”.

Purchase now

Kenwood KHC29.B0WH Prospero Stand Mixer: Was £199.99, now £99.99

Kenwood

If the most recent Bake Off sequence has left you feeling impressed, save greater than £100 on this Kenwood stand mixer in Argos’s sale. Its compact design makes it preferrred for smaller kitchens, and it comes with a 4.3l stainless-steel bowl together with three different non-stick bowls and different attachments reminiscent of a whisk and dough hook. This model was featured twice in our assessment of the very best stand mixers, so we are able to converse to the popularity of Kenwood’s merchandise. You’ll be a star baker very quickly.

Purchase now

Canon EOS M50 Vlogger Package : Was £729.99, now £649.99

Canon

Whether or not you’re trying to brush up in your pictures abilities or wish to foray into the sphere of vlogging (video running a blog for the uninitiated), this package has every part it’s good to shoot photos and movies in 4K high quality. Budding YouTubers will really love unwrapping this package come Christmas morning.

In it you’ll discover a Canon EOS M50 digital camera, a 15-45mm lens, tripod, 2GB SD card and an extra battery. You can even join the digital camera to your wifi too, with a view to add content material onto a pc for enhancing. The digital camera options an digital viewfinder and 3in LCD contact display screen for simple filming.

Purchase now

GoPro HERO7 White CHDHB-601-RW Motion Digicam: Was £149.99, now £99.99

GoPro

Seize all of the motion with this GoPro digital camera that’s small however mighty. It has a contact display screen and might be synced to the GoPro app for simple sharing amongst your different units or buddies and it guarantees HD video that will also be shot into time lapses. It’s waterproof too, with a burst mode function that lets you take 15 photographs in a second.

Purchase now

Krups Opio XP320840 Pump Espresso Espresso Machine: Was £149.99, now £74.99

Krups

If you happen to’re lacking your each day espresso repair in your commute to work, now’s the time to purchase a machine so you possibly can replicate barista-quality cups from house, and this machine is at present half worth. It has a 15-bar pump strain which claims to ship an genuine style with none bitterness and the adjustable steam nozzle will aid you create frothy milk. The elements are dishwasher protected too, which is an added bonus. This machine was on the extra reasonably priced aspect to start with, however now it’s an actual steal at underneath £100.

Purchase now

X Rocker Esport Professional Stereo Audio Gaming Chair with Subwoofer: Was £149, now £99.99

X Rocker

Full your gaming set-up with this professional-looking chair that can preserve you comfy all through hours of play. The headrest has an audio system in-built too so that you don’t have to put on headphones to listen to your opponents. It’s suitable with PS4, Xbox One and the Nintendo Change console. Watch any gamer bounce for pleasure at this Christmas present.

Purchase now

BaByliss Tremendous Energy Professional Hair Dryer: Was £59.99, now £29.99

Babyliss

Add this to your basket to recreate salon blow dries at house, whereas there’s £30 to be saved. It guarantees a fast-drying time, even on thick hair, whereas eradicating frizz and smoothing strands to depart you with a healthy-looking shine. The model has featured in our assessment of the very best hair dryers, so that you’re in good palms.

Purchase now

Samsung UE43TU7020KXXU Good 4K UHD TV with HDR 43in: Was £329, now £299

Samsung

Take pleasure in movies, TV reveals and gaming enjoyable whereas saving £100 on this Samsung TV. With 4K picture high quality and sound that adjusts to what you’re anticipating the very best expertise doable, it’s value including to your basket as we’re spending extra time on the couch than ever. The sensible TV additionally presents entry to a variety of apps together with Apple TV, Britbox and BT Sport, so that you’ll by no means run out of issues to look at.

Purchase now

JBL Quantum 600 Wi-fi Headset: Was £129.99, now £69.99

JBL

Get misplaced in your gaming environment, whether or not that’s the partitions of Fortnite or the battlefield in Name of Responsibility, with this headset that may be linked to your console by way of USB. It would sit over the ears and will also be wi-fi too, and on a full cost, it guarantees 14 hours of play. They can be utilized together with your PS4, Xbox One, PC or Nintendo Change, good for any gamer head.

Purchase now

Spear & Jackson Strain Washer 2200W: Was £200, now £100

Spear & Jackson

The second nationwide lockdown in England is the proper time to do these dreaded family jobs that you just’d been avoiding, and when you want a brand new strain washer to tick a few of them off of your record, this one is at present half worth. It’s Spear & Jackson’s strongest mannequin, with a bar score of 110 (when you’re not sure what this implies, take a look at our assessment of the very best strain washers for extra steerage). It comes with a variety of equipment together with a patio cleaner, rotary brush and variable lance, so you possibly can deal with in every single place from automobile wheels and patio stones. This washer comes with a three-year assure too, in case you wanted any extra convincing.

Purchase now

Mamas & Papas Rocco Three Piece Nursery Furnishings Set – White: Was £499.99, now £399.99

Mamas & Papas

If you happen to’re an expectant mum or dad, you’ll be trying to make as many financial savings as you possibly can, so Black Friday is a good time to replenish on heavy necessities like furnishings. Save £100 on this Mamas & Papas set to your nursery, which incorporates a cot, a chest of drawers and a double hanging wardrobe. The straightforward white end makes it simple so as to add your chosen color scheme and the standard design will look the half in any family.

Purchase now

Samsung Galaxy 46mm Good Watch – Silver: Was £279, now £179

Samsung

This watch does extra than simply inform the time and would make the proper Christmas current for the busiest particular person in your life. Claiming to have a prolonged seven days of battery life, you need to use it to take calls, reply to messages, order Ubers, hook up with your Spotify playlists and monitor 40 several types of train that can assist you meet your health targets. The Samsung Galaxy Watch Three featured in our assessment of the very best smartwatches for 2020, so we are able to converse to the model’s credentials.

Purchase now

Remington AIR3D Hair Dryer with Diffuser: Was £79.99, now £49.99

Remington

This uncommon wanting hair dryer now prices underneath £50 and options what Remington calls “3D air circulation expertise” that adapts to create the optimum drying temperature whereas including shine to your locks. It sounds harking back to Dyson’s fashionable hair dryer expertise, however this a much more reasonably priced possibility. There’s three temperature settings in addition to a “cool shot” function to set your type. A unique Remington hair dryer was awarded greatest purchase standing in our assessment of the very best hair dryers, so we are able to converse to the model’s credentials.

Purchase now

When is Black Friday 2020?

This 12 months Black Friday will fall on Friday 27 November, and the occasion will run over the weekend till 30 November, which is Cyber Monday.

Whereas the principle occasion runs for a number of days, we’re already experiencing the longest lead-up ever, as huge manufacturers and retailers have launched their early Black Friday offers weeks earlier than the large day.

Amazon launched its early fowl sale a complete month earlier than Black Friday – two weeks sooner than final 12 months – whereas different retailers reminiscent of Boots and Superdrug have additionally began their gross sales.

get the very best Argos Black Friday offers

When you’ve got a Nectar card, you possibly can gather factors on all Argos Black Friday purchases. If you happen to don’t have it already, obtain the Nectar App earlier than Black Friday begins for entry to early presents too.

Preserve your eyes peeled on our information to be told of the early presents accessible, as you could possibly tick off your purchasing record sooner than deliberate.

We’d advocate making a word of what you’re on the lookout for to keep away from any impulse purchases chances are you’ll later remorse.

How lengthy will the Black Friday offers final?

Final 12 months the Black Friday sale was the longest operating occasion to this point, lasting two weeks. Amazon launched its first offers a month early for 2020, so has already topped 2019, with retailers reminiscent of Boots and Very following go well with. Whereas most offers will finish on Cyber Monday, the 30 November, some model proceed their gross sales after that date.

Keep forward of the push and browse our round-up of the total record of shops anticipated to take part, from style, homewares, tech, magnificence and gaming manufacturers, reminiscent of Asos, AO, BT, John Lewis & Companions and M&S.

It’s the very best time to start out your Christmas purchasing or splash out on bulkier, pricier objects you’ve had your eye on reminiscent of sofas, TVs and residential units.

Learn extra on Black Friday 2020

get the very best Black Friday offers this 12 months – When the sale begins, get the very best financial savings, and put together

Finest Amazon Black Friday offers – There shall be thousands and thousands of offers, so verify in right here for our choose of the very best

Finest John Lewis & Companions Black Friday offers – With nice offers on style, magnificence, tech, youngsters and homewares it is going to be a go-to for a lot of

Finest Currys PC World Black Friday offers – For every part from TVs to laptops, and kettles to espresso machines

Finest Apple Black Friday offers – The tech big is infamous for not taking part in Black Friday, so how are you going to discover offers on Apple merchandise? Discover out in our information

Finest Black Friday tech offers – Whether or not it’s a brand new cellphone contract or noise-cancelling headphones, you’ll discover the very best deal right here

Finest Black Friday TV offers – Replace your at-home cinema expertise with out paying full worth with our featured offers

Finest Black Friday laptop computer offers – There’s a whole bunch of kilos to be saved on laptops from big-name manufacturers reminiscent of Apple, Microsoft and HP

Finest Black Friday gaming offers – Struggling to decide on which console to purchase, or after a brand new controller or sport? This is our professional information

Finest Black Friday house home equipment offers – Now’s the time to improve your vacuum cleaner or espresso machine

Finest Black Friday style offers – Whether or not its a pair of trainers or a coat, deal with your self to new season necessities

Finest Black Friday magnificence offers – Replenish in your favourites throughout make-up, skincare, haircare and perfume

Finest Black Friday youngsters’ toys offers – Get your Christmas purchasing achieved and dusted, with offers from Disney, Lego, Playmobil and extra

Finest Black Friday mattress offers – Relaxation simple with huge reductions for manufacturers reminiscent of Emma, Eve Sleep and Simba

Finest Black Friday furnishings offers – There isn’t any want to attend till the January sale to get a discount couch, wardrobe or armchair

The shops collaborating in Black Friday – Our predictions based mostly on final 12 months, which we’ll be updating because the offers start

Learn Extra

The very best offers within the Currys early Black Friday sale

Finest early Amazon Black Friday 2020 offers accessible now

Finest Black Friday UK early offers from Debenhams, Virgin Media and Very

Finest John Lewis Black Friday offers 2020: Early presents within the sale

Finest Apple Black Friday offers 2020: Early presents

Dyson supersonic hair dryer Black Friday deal: Get a free £65 stand

from Growth News https://growthnews.in/best-argos-black-friday-deals-2020-early-offers-on-laptops-apple-watches-and-dyson-vacuums/ via https://growthnews.in

#Growth News

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hiokiindonesia-blog · 4 years

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The device that is used for measuring the earth's resistance is the earth tester. The earth ground tester that can be used for accurate readings is a digital tester over the analog tester, as the digital tester has digital timers, voltage regulators, and a digital display. For More Information: +6221 29569853

#Digital Transformation #heavy metal #power #digital clamp meter #clamp

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satelitebox-blog · 5 years

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Samsung 65-Inch Class Q90R (QN65Q90RAFXZA)

Samsung has been enthusiastic about OLED screens for its phones for years, but it’s pointedly shied away from the technology in favor of its own QLED lines of LCD TVs. As we’ve been consistently impressed by OLED TVs since we first started testing them, and less so with QLED, we’ve been skeptical of that choice. With the Q90R, Samsung’s 2019 flagship TV, the company finally proves us wrong. The Q90R is a very expensive 4K LCD model ($3,499.99 for the 65-inch QN65Q90RAFXZA we tested) that shows some of the best color and contrast performance we’ve seen. Usually good LCDs can show terrific color but falter at contrast, and OLED TVs show superlative contrast but have weaker color. The Q90 excels in both fields, earning it our Editors’ Choice.

Design

The Q90R looks simple and stylish, with a thin, matte silver bezel around the screen and running along the TV’s sides. It rests on a simple, gunmetal stand with a single rectangular foot in the center. The back of the TV is made of dark gray plastic and curves outward slightly, and very notably has only a single wired connection. Instead of plugging all of your devices and a power cable into the TV itself, everything is handled by the separate One Connect box that plugs into the back of the Q90R through a single, thin wire. The One Connect box is a gunmetal plastic slab about the size of a cable or satellite box, with all of the Q90’s ports and most of its electronics. Because it’s designed to be tucked in a cabinet, the front is flat and nondescript. The back holds four HDMI ports, an Ethernet port, an antenna/cable connector, a 3.5mm EX-Link port, a connector for the power cable, and a connector for the One Connect cable that plugs into the back of the TV. Three USB ports sit on the right side of the box. The Q90R has no analog video connections, so if you want to use a component or composite video source, you’ll have to get an HDMI converter. The Q90R’s remote is identical to the one included with the lower-end Samsung RU8000, a slim, simple black plastic wand built around a circular direction pad. Its scant controls include volume and channel rockers; Home, Back, Pause/Play, Voice, and Power buttons; a number/color button that brings up an on-screen number pad and additional controls; and three dedicated service buttons for Amazon Prime Video, Hulu, and Netflix. A pinhole microphone on the top lets you speak into the remote to use voice search and Samsung’s Bixby voice assistant.

Samsung Smart TV

In typical Samsung style, the Q90R’s smart TV interface is sophisticated and very Samsung-centric. The platform is also just like the RU8000’s, with a powerful Universal Guide that aggregates live TV and streaming content into a single space; a functional but modest app ecosystem that covers most major streaming services including Amazon Prime Video, Amazon Music, Google Play Movies & TV, Hulu, Netflix, SiriusXM, Sling TV, Spotify, and Tidal; and support for Apple’s AirPlay 2 for local streaming from iOS and OS X devices. The Q90R also features Bixby, Samsung’s voice assistant that remains a largely unwanted runner-up to Amazon Alexa and Google Assistant. It works perfectly well for controlling the TV itself, and can even control smart home devices if they’re compatible with the Samsung-owned SmartThings platform, but it simply isn’t as useful, powerful, or broadly compatible as Amazon’s or Google’s voice assistants. Fortunately, you can simply ignore Bixby by not pressing the Voice button on the remote, and if you have Alexa or Google Assistant smart speakers you can use them to control the TV instead. Unless you’re a very dedicated Samsung fan with a home filled with the company’s devices, Bixby just isn’t very useful.

Performance

The Samsung Q90R is a 4K TV that supports high dynamic range (HDR) content in HDR10, HDR10+, and HLG. It does not support Dolby Vision. We test TVs with a Klein K-10A colorimeter, a Murideo SIX-G signal generator, and Portrait Displays’ CalMAN software using methodology based on Imaging Science Foundation’s calibration techniques. In Movie mode, with Local Dimming set to High and Black Level set to low, the Q90R shows remarkably high peak brightness at 548.2cd/m2 for a full-field pattern and 1,510.8cd/m2 for an 18-percent pattern. This is almost as bright as the Sony Master Series Z9F, the brightest TV we’ve tested (1,677.49cd/m2 with an 18-percent field). Combined with an 0.01cd/m2 black level, the Q90R has an effective contrast ratio of 151,080:1, by far the highest we’ve measured on an LCD TV. Only OLED TVs can show better contrast, with their ability to display perfect blacks, and are at best only half as bright. Color performance is similarly impressive. The above chart shows DCI-P3 color levels as boxes and measured color levels as dots. Out of the box, with the HDMI input set to the full color range, the Q90R almost completely covers the DCI-P3 color space, with spot-on whites. Greens and yellows are slightly undersaturated, but all colors are very nicely balanced with no noticeable shifting. The fantastic color and contrast comes through in BBC’s Planet Earth II. In the “Islands” episode, the blues and teals of the water and greens and yellows of the plants look vibrant and accurate. Fine details like fur and bark appear clearly both in shade and direct sunlight. It’s a natural, crisp picture. The Q90R’s accurate colors are also easily apparent in Deadpool. In the opening fight on the highway, Deadpool’s costume can appear slightly purple under the overcast, fairly cool light on some TVs, but is a properly saturated red on the Q90. The flames in the burning lab fight also show a wide range of yellows, oranges, and reds, and details in the shadowy parts of the scene are easily visible without looking washed out. The party scene in The Great Gatsby demonstrates the Q90R’s strong contrast. The contours and textures of the black suits can be clearly seen against the bright whites of the shirts and lights. Shadow and highlight detail are both visible without lacking brightness, and skin tones look natural.

Input Lag

Input lag measures how long it takes for a TV’s screen to update after it receives a signal, and can be important for video games that require responsive controls. In Movie mode, using a Leo Bodnar signal lag tester, the Q90R shows a lag of 79.6 milliseconds. This is fairly high, but enabling Game Mode improves input lag considerably at the expense of some picture quality, cutting it down to 24ms. This is still higher than the 20ms threshold at which we would consider a TV to be among the best for gaming. To be fair, the environment in which we tested the Q90R prevented us from using our newer HDFury Diva 4K 18Gbps HDMI matrix to test input lag, which we have found to be capable of producing more accurate and generally lower numbers on newer displays.

A Surprising Stunner

Samsung’s Q90R TV is one of the best-looking LCDs we’ve tested. It’s also one of the most expensive, at $3,500 for the 65-inch version. That puts it in OLED territory, where we previously thought LCDs couldn’t quite reach. The Q90’s remarkably bright panel and impressively low black levels come close, though, and its color reproduction out of the box is far superior to any OLED we’ve tested. This is an excellent TV for anyone looking for a centerpiece to their pricey home theater, and professional calibration can potentially coax even better performance out of it. It’s pricey and it doesn’t have Dolby Vision, but it still earns our Editors’ Choice for its sheer picture quality. Follow my blog with Bloglovin If you want the slimmer profile and better black levels of an OLED TV, and don’t mind a dimmer picture and less accurate colors, the Sony Master Series A9G and LG OLEDC9P are both excellent alternatives. If you simply want to spend much less while still getting strong color and contrast performance, the Hisense H8F and TCL 6-series remain our favorite budget TVs. Read the full article

#BBC #SamsungSmartTV #Samsung’sQ90R

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systemprotection · 6 years

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System Protection is now Authorized Distributor Partner for KYORITSU in GUJARAT & RAJASTHAN. Product Range • Multimeters (Analog & Digital) • AC / DC Clamp Meters • Leakage Clamp meters • Insulation Testers • Earth Testers • High Voltage Insulation testers • Power Meter • Power Quality Analyzer For any inquiry Kindly Contact [email protected]

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nayanasri · 5 years

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The Bentley Continental GT is iconic. The vehicle has long stood for excess and opulence, and I knew that going in. I expected the Continental GT to be over-engineered and capable of high-speed thrills. And it is, but there’s more.

The tester I’m driving costs $ 279,000. Of course it’s beautiful and fast and dripping with technology. It’s a Bentley. Inside and out, at high speed or low speed, the latest Continental GT exceeded all my expectations.

The machine glides over the road, powered by a mechanical symphony performing under the hood. The W12 engine is a dying breed, and it’s a shame. It’s stunning in its performance here. This is a 200 mph vehicle, but I didn’t hit those speeds. What surprised me the most is that I didn’t need to go fast. The new Continental GT is thrilling in a way that doesn’t require speed. It’s like a great set of speakers or exclusive liquor. Quality over quantity, and in this mechanical form, the quality is stunning.

Review

Bentley debuted the Continental GT in 2003 and retained a familiar form over the years. Its mission has remained constant: To be the very best grand touring car available. It’s held that crown on and off since 2003 as other cars entered the game. But with this latest revision, the crown has returned to Bentley. This is an astounding vehicle to take on a road trip. It’s like a private jet on the highway.

Under the long hood sits a massive W12 engine with twin turbos. The setup results in over 620 HP and 664-foot pounds of torque. And it knows how to translate those numbers to the payment. The engine pounds not like a stack of Marshall amps at a Motorhead concert, but pounds like a symphony playing Beethoven’s 5th with intensity.

The Bentley Continental GT performance is where it stands apart.

It glides as speeds reach illegal levels. There’s no drama from the transmission or argument from the engine. When the accelerator drops to the floor, a gateway opens in front of the Bentley, allowing it to transcend space and time as it exceeds posted speed limits.

The Bentley Continental GT lays out its power with the precision of an electric vehicle but the intensity of a street racer. The power delivery is unreal. Under normal driving modes, the transmission is hardly noticeable, and under strain of chasing a quarter mile, the shifts are barely noticeable as it arm wrestles the massive W12.

Driving the Bentley Continental GT is an exercise in restraint. At times, say, when coming’s out of a gnarly curve, you feel the need to slam the pedal to the floor and launch the car off the apex. But that would land you in jail. This is a car that could live its best life on a track, but it doesn’t need the track to be happy. Even driving the Continental GT to the golf course or office park is nearly a thrill.

The GT is just excellent. It inspires confidence and regal intrigue that’s often missing in many of its contemporaries.

Entering the latest Continental is like sinking behind the controls of a fantasy rocket ship. Brushed metal adorns the center stack and handcrafted wood and leather wrap the cabin. Adorable metal pulls control the vents, and machined knobs perform various functions.

The leather is soft and metal real. It’s the little things, too. The lume on the analog clock is fantastic and the wood grain matches throughout. The seats feature a lovely diamond pattern with multiple layers of embroidered detail. Don’t want to look at an LCD screen? Hit a button, and it rotates away, revealing a set of three analog gauges in its place.

However, throughout the Continental GT, there are odd choices of material. Example: The gear shift is plastic and creaks like a well-used toy. It’s an odd choice for a substantial touchpoint. It feels cheap in comparison to gear shifters in other vehicles. BMW, for instance, is using manufactured crystal in its new large SUV and it conveys a sense of stoutness missing in the Bentley’s.

Other plastic bits feel out of place. When sitting down, a bar extends from behind the seats, pushing the seatbelt within reach of the driver. It’s flimsy plastic. The handle on the outside feels loose. Even the key fob is underwhelming; I think the fob for my F-150 is more substantial.

I’m nitpicking, but the Bentley Continental GT costs north of $ 279,000.

The controls are familiar. The Bentley uses a lot of switch plates and instruments from Audi’s part’s bin though, in the Bentley, they’re chrome. The Audi theme continues to the digital instrument cluster where the shares the same design as the one found in most Audi’s. Expect a similar experience throughout. This isn’t a bad thing. Audi has one of the best interfaces available throughout the industry.

The 2019 Bentley Continental GT is unforgettable. It’s a beautiful combination of obscene power and luxury materials.

I took delivery of this tester on the eve of a long weekend and spent as much time in it as I could. It’s more comfortable than my house. The seats are supple and supportive. The dash impressive with its woodwork and analog dials. The power is intoxicating.

Cars like the Continental GT will likely continue to exist after electric vehicles become the norm. At least until the Earth runs out of oil. They have to. Cars like this will always be a luxury item. They have a soul missing from electric vehicles. There’s nothing like putting your foot down on a Bentley W12 and feeling the world come alive around you.

Gadgets – TechCrunch

Review: The 2019 Bentley Continental GT is beautiful, excessive and totally worth it The Bentley Continental GT is iconic. The vehicle has long stood for excess and opulence, and I knew that going in.

#2019 #Beautiful #Bentley #Continental #excessive #Review #Totally #Worth

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releasesoon · 5 years

Text

The tester I’m driving costs $279,000. Of course it’s beautiful and fast and dripping with technology. It’s a Bentley. Inside and out, at high speed or low speed, the latest Continental GT exceeded all my expectations.

Review

The Bentley Continental GT performance is where it stands apart.

The GT is just excellent. It inspires confidence and regal intrigue that’s often missing in many of its contemporaries.

I’m nitpicking, but the Bentley Continental GT costs north of $279,000.

The 2019 Bentley Continental GT is unforgettable. It’s a beautiful combination of obscene power and luxury materials.

Source

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technomanish · 5 years

Text

The Bentley Continental GT is iconic. The automobile has lengthy stood for extra and opulence, and I knew that entering into. I anticipated the Continental GT to be over-engineered and able to high-speed thrills. And it’s, however there’s extra.

The tester I’m driving prices $279,000. In fact it’s stunning and quick and dripping with expertise. It’s a Bentley. Inside and outside, at excessive velocity or low velocity, the most recent Continental GT exceeded all my expectations.

The machine glides over the street, powered by a mechanical symphony performing beneath the hood. The W12 engine is a dying breed, and it’s a disgrace. It’s beautiful in its efficiency right here. It is a 200 mph automobile, however I didn’t hit these speeds. What stunned me essentially the most is that I didn’t must go quick. The brand new Continental GT is thrilling in a method that doesn’t require velocity. It’s like an incredible set of audio system or unique liquor. High quality over amount, and on this mechanical type, the standard is beautiful.

Review

Bentley debuted the Continental GT in 2003 and retained a well-recognized type through the years. Its mission has remained fixed: To be the easiest grand touring automobile accessible. It’s held that crown on and off since 2003 as different vehicles entered the sport. However with this newest revision, the crown has returned to Bentley. That is an astounding automobile to tackle a street journey. It’s like a non-public jet on the freeway.

Below the lengthy hood sits an enormous W12 engine with twin turbos. The setup leads to over 620 HP and 664-foot kilos of torque. And it is aware of find out how to translate these numbers to the fee. The engine kilos not like a stack of Marshall amps at a Motorhead live performance, however kilos like a symphony enjoying Beethoven’s fifth with depth.

The Bentley Continental GT efficiency is the place it stands aside.

It glides as speeds attain unlawful ranges. There’s no drama from the transmission or argument from the engine. When the accelerator drops to the ground, a gateway opens in entrance of the Bentley, permitting it to transcend house and time because it exceeds posted velocity limits.

The Bentley Continental GT lays out its energy with the precision of an electrical automobile however the depth of a road racer. The ability supply is unreal. Below regular driving modes, the transmission is hardly noticeable, and beneath pressure of chasing 1 / 4 mile, the shifts are barely noticeable because it arm wrestles the large W12.

Driving the Bentley Continental GT is an train in restraint. At occasions, say, when coming’s out of a gnarly curve, you are feeling the necessity to slam the pedal to the ground and launch the automobile off the apex. However that might land you in jail. It is a automobile that would reside its greatest life on a observe, however it doesn’t want the observe to be blissful. Even driving the Continental GT to the golf course or workplace park is sort of a thrill.

The GT is simply wonderful. It evokes confidence and regal intrigue that’s typically lacking in a lot of its contemporaries.

Coming into the most recent Continental is like sinking behind the controls of a fantasy rocket ship. Brushed metallic adorns the middle stack and handcrafted wooden and leather-based wrap the cabin. Lovely metallic pulls management the vents, and machined knobs carry out varied capabilities.

The leather-based is smooth and metallic actual. It’s the little issues, too. The lume on the analog clock is incredible and the wooden grain matches all through. The seats characteristic a beautiful diamond sample with a number of layers of embroidered element. Don’t wish to take a look at an LCD display screen? Hit a button, and it rotates away, revealing a set of three analog gauges instead.

Nevertheless, all through the Continental GT, there are odd selections of fabric. Instance: The gear shift is plastic and creaks like a well-used toy. It’s an odd selection for a considerable touchpoint. It feels low cost compared to gear shifters in different autos. BMW, as an example, is utilizing manufactured crystal in its new massive SUV and it conveys a way of stoutness lacking within the Bentley’s.

Different plastic bits really feel misplaced. When sitting down, a bar extends from behind the seats, pushing the seatbelt inside attain of the motive force. It’s flimsy plastic. The deal with on the skin feels unfastened. Even the important thing fob is underwhelming; I believe the fob for my F-150 is extra substantial.

I’m nitpicking, however the Bentley Continental GT prices north of $279,000.

The controls are acquainted. The Bentley makes use of a variety of swap plates and devices from Audi’s half’s bin although, within the Bentley, they’re chrome. The Audi theme continues to the digital instrument cluster the place the shares the identical design because the one present in most Audi’s. Count on an analogous expertise all through. This isn’t a foul factor. Audi has the most effective interfaces accessible all through the business.

The 2019 Bentley Continental GT is unforgettable. It’s a good looking mixture of obscene energy and luxurious supplies.

I took supply of this tester on the eve of a protracted weekend and spent as a lot time in it as I might. It’s extra snug than my home. The seats are supple and supportive. The sprint spectacular with its woodwork and analog dials. The ability is intoxicating.

Automobiles just like the Continental GT will probably live on after electrical autos grow to be the norm. Not less than till the Earth runs out of oil. They must. Automobiles like this may at all times be a luxurious merchandise. They’ve a soul lacking from electrical autos. There’s nothing like placing your foot down on a Bentley W12 and feeling the world come alive round you.

Review: The 2019 Bentley Continental GT is gorgeous, extreme and completely value it The Bentley Continental GT is iconic. The automobile has lengthy stood for extra and opulence, and I knew that entering into.

0 notes

dizzedcom · 5 years

Text

The tester I’m driving costs $279,000. Of course it’s beautiful and fast and dripping with technology. It’s a Bentley. Inside and out, at high speed or low speed, the latest Continental GT exceeded all my expectations.

Review

The Bentley Continental GT performance is where it stands apart.

The GT is just excellent. It inspires confidence and regal intrigue that’s often missing in many of its contemporaries.

I’m nitpicking, but the Bentley Continental GT costs north of $279,000.

The 2019 Bentley Continental GT is unforgettable. It’s a beautiful combination of obscene power and luxury materials.

0 notes

inovn · 5 years

Text

Fluke – Insulation Resistance Testers (Model 1555)

Vui lòng liên hệ với chúng tôi– chúng tôi sẽ liên hệ lại với khách hàng bằng điện thoại hoặc email.

Lưu ý: Tham khảo ý kiến của nhân viên INO sẽ giúp bạn tiết kiệm được thời gian và chi phí khi cần mua sắm. Với sự tư vấn của chúng tôi, bạn sẽ không gặp khó khăn khi tìm hiểu về đặc tính của sản phẩm cần mua.

Features include:

Test voltages to up 10 kV and save time by trending on the spot only with Fluke Connect™

CAT III 1000 V, CAT IV 600 V safety rating

Warning function alerts the user that line voltage is present and gives the voltage reading up to 600 V AC or DC for increased user safety

Selectable test voltages in 50 V steps from 250 V to 1000 V, and 100 V steps above 1000 V

Measurements can be stored in up to 99 memory locations, with each location assigned a unique, user defined, label for easy recall

Long battery life gives the user over 750 tests between charges

Automatic calculation of Dielectric Absorption (DAR) and Polarization Index (PI) with no additional setup

Guard system eliminates the effect of surface leakage current on high-resistance measurements

Large digital/analog LCD for easy viewing

Capacitance and leakage current measurement

Ramp function for breakdown testing

Resistance measurements up to 2 TΩ

Timer settings up to 99 minutes for timed tests

3-year warranty

Electrical Specifications The tester's accuracy is specified for one year after calibration at operating temperatures of 0 °C to 35 °C. For operating temperatures outside the range (-20 °C to 0 °C and 35 °C to 50 °C), add ± .25 % per °C, except on the 20 % bands add ± 1 % per °C. Insulation Resistance Measurement Test voltage (DC) Range Accuracy (± reading) 250 V < 200 kΩ Unspecified 200 kΩ to 5 GΩ 5 % 5 GΩ to 50 GΩ 20 % > 50 GΩ Unspecified 500 V < 500 kΩ Unspecified 500 kΩ to 10 GΩ 5 % 10 GΩ to 100 GΩ 20 % > 100 GΩ Unspecified 1000 V < 200 kΩ Unspecified 200 kΩ to 20 GΩ 5 % 20 GΩ to 200 GΩ 20 % > 200 GΩ Unspecified 2500 V < 200 kΩ Unspecified 200 kΩ to 50 GΩ 5 % 50 GΩ to 500 GΩ 20 % > 500 GΩ Unspecified 5000 V < 200 kΩ Unspecified 200 kΩ to 100 GΩ 5 % 100 GΩ to 1 TΩ 20 % > 1 TΩ Unspecified 10000 V (1555 Only) < 200 kΩ Unspecified 200 kΩ to 200 GΩ 5 % 200 GΩ to 2 TΩ 20 % > 2 TΩ Unspecified Bar graph range 0 to 1 TΩ (1550C) – 0 to 2 TΩ (1555) Insulation test voltage accuracy -0 %, +10 % at 1 mA load current Induced ac mains current rejection 2 mA maximum Charging rate for capacitive load 5 seconds per μF Discharge rate for capacitive load 1.5 s/μF Leakage current measurement Range: 1 nA to 2 mA Accuracy: ± (5 % + 2 nA) Capacitance measurement Range: 0.01 μF to 15.00 μF Accuracy: ± (15 % rdg + 0.03 μF) Timer Range: 0 to 99 minutes Resolution: Setting: 1 minute, Indication: 1 second Live circuit warning Warning range: 30 V to 660 V ac/dc, 50/60 Hz Voltage accuracy: ± (15 % + 2 V) Software specifications FlukeView Forms™ basic software requires a PC running Windows XP, Windows Vista , Windows 7 or Windows 8 General Specifications Display 75 mm x 105 mm Power 12 V lead-acid rechargeable battery, Yuasa NP2.8-12 Charger Input (AC) 85 V to 250 V ac 50/60 Hz 20 VA This Class II (double insulated) instrument is supplied with a Class 1 (grounded) power cord. The protective earth terminal (ground pin) is not connected internally. The extra pin is for added plug retention only. Dimensions 269 mm x 277 mm x 160 mm (10.6 in x 10.9 in x 6.3 in) Weight 3.7 kg (8.2 lb) Temperature (operating) -20 ºC to 50 ºC (-4 ºF to 122 ºF) Temperature (storage) -20 ºC to 65 ºC (-4 ºF to 149 ºF) Humidity 80 % to 31 ºC decreasing linearly to 50 % at 50 ºC Altitude 2000 m Enclosure sealing IP40 Input overload protection 1000 V AC Electromagnetic compatibility EN 61326 Certifications Safety compliance IEC 61010-1: Overvoltage category II, pollution degree 2 IEC 61010-2-030: Measurement 600V CAT IIV / 1000V CAT III IEC 61557-1, IEC 61557-2 Fluke Connect™ compatible Yes

Resource & Download

User Manual

Datasheet

Lưu ý: Nếu một thiết bị nào đó không được liệt kê ở đây, điều đó không có nghĩa rằng chúng tôi không hỗ trợ được bạn về thiết bị đó. Hãy liên hệ với chúng tôi để biết danh sách đầy đủ về thiết bị mà chúng tôi có thể hỗ trợ và cung cấp.

INO: Bán, Báo giá, tư vấn mua sắm và cung cấp, tư vấn sản phẩm thay thế; tương đương, hướng dẫn sử dụng, giá…VNĐ, …USD [email protected] | 02873000184 | Fluke – Insulation Resistance Testers (Model 1555).

Calibrator http://www.calibrator.vn/fluke/fluke-insulation-resistance-testers-model-1555/

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hudsonespie · 5 years

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Megger Construction and Operation Explained

The most important factor for the staff working onboard ships (or in any other industry) is – the personal safety and the safety features incorporated in machinery and systems. Electrical components and mechanical systems present in the engine room are mainly maintained by the electrical officer. The routine maintenance for electrical machinery involves checking of insulation resistance, which is done by an instrument called “Megger” or “ohmmeter”.

The insulation resistance test is done to ensure the integrity, i.e. to resist the current flow outside the equipment, and keeping it within the dedicated parts.

The measured “IR” (Insulation resistance) can be of a wire, cable or motor/generator windings. In simple terms, every electrical insulation should have the opposite characteristic as the conductor.

Related Read: Importance of Insulation Resistance in Marine Electrical Systems

For e.g., in the pump casing and pipes in a water carrying system acts as the insulation, which prevents the leakage of water. Similarly, in an electrical wiring system, the wire insulation prevents the leakage of current which is carried in a copper wire.

Insulation Resistance – Importance And Causes of Decrease

Insulation resistance (I.R) is a critical parameter as it’s directly related to personal safety, the safety of machinery and power reliability. The I.R value of electric devise changes with ageing, mechanical and electrical stresses, temperature, contamination, atmosphere, humidity etc. It is therefore important for the engineers and electrical officers to identify this detection to avoid any accidents on board ships because of electric shock.

Related Read: How to Minimize the Risks of an Electrical Shock on a Ship?

Another common cause of the decrease in the value of insulation resistance is the ingress of water. If the electrical equipment is wet due to freshwater, it can directly be dried out for checking the IR values. However, in the case of seawater ingress, the first step is to wash it with fresh water to remove the salt deposits which will cause corrosion of metal parts and insulating surface. Remove oil and grease from such equipment using a suitable solvent.

Any wet equipment on the ship is susceptible to voltage breakdown. Therefore, when using Meggar at the drying out stage, low voltage Megger insulation tester (100 or 250 VDC) to be used.

If low voltage ohmmeter is not available, using slow cranking in a mechanical type 500 V megger can be done to achieve the results. Sometimes, electrical megger is also provided with test range in kilohms (kW). This test range measurement is the ideal initial check to be made on flooded equipment.

Why is Megger Testing Done?

As mentioned earlier, the insulation resistance of an electrical system degrades over time because of several factors. The insulation resistance needs to be tested to check the insulation quality (punctures in insulation) of the electrical system and to avoid any major or minor electrical shocks to operators.

Thus megger testing is carried out to find out information on leaking current and the areas where insulation has deteriorated because of excessive moisture and dirt in the electrical circuits.

Any specific circuit found faulty is then isolated and replaced/repaired to avoid any further problems and ensure the safety of the crew.

Related Read: Engine Room Flooding: Troubleshooting and Immediate Actions

Use of Megger meter on a Ship (And in other industries)

The Meggar is widely and frequently used by the ship’s officer for the following jobs:

Testing an Earth/Ground connection

Battery Testing

Relay Testing

Watthour Meter Testing

Oil Testing

Transformer Testing

Circuit Breaker Testing

Cable Fault Testing

Power Quality Analysis

Power Factor Testing

Low Resistance Testing

Motor winding testing

Alternator winding testing

There is no fire hazard related to Megger insulation tester when used in normal atmosphere. However, when using the instrument for testing equipment located in inflammable or hazardous atmospheres, it may lead to an explosion due to the spark created, when using the instrument. Do not use the megger test equipment in an explosive atmosphere (such as the deck of an oil tanker ship).

Types Of Megger or Ohmmeter

Megger is a portable instrument which is used to measure insulation resistance of the electrical machinery or system. It can be battery operated or mechanically operated (hand crank dc generator) and gives a direct reading in ohms. For this reason, it is also called as ohm meter. Onboard ship, different systems are present with large voltage ratings and therefore Megger comes in the range of 50, 500, 1000, 2500, and 5000 V, thereby making megger meter suitable for applications on normal voltage equipment to more demanding high-voltage applications.

The categories of a megger test equipment can be divided into two:

Electronic Type (Battery Operated)

Manual Type (Hand Operated)

There are other types of meggar available in the market, which is operated by an attached motor requiring an external power source for rotation. This motor then rotates the generator fitted in the megger meter. As the overall size of such meter increases due to the addition of motor, and their dependency on a power source, they are not much preferred for use on ships.

Electronic Type Megger:

The electronic type megger, also known as electrical megger, is compact of all types and uses a battery for operation. The important parts of this megger test equipment are:

Digital Display:- To show the insulation resistance value in digital form

Testing Wires:- Two wire leads for connecting megger with an electrical external system for testing the later.

Selection Switches:- Different parameter ranges are provided on the meter, which can be selected by using the selection switches.

Indicators:- Different indicators are incorporated into the instrument to give a visual and audible indication when the instrument is ON, for a warning, parameter status etc.

The construction and parts of electrical megger meter will vary depending upon the manufacturer, however, the basic construction and operation remain the same.

Advantages Of Electronic Megger

Has a very high measurement accuracy

Easy to operate for one person

The digital display makes it easy to read the IR value

Robust and safe to use

Less maintenance as compare to other types

Works well in congested spaces

Handy and compact to carry

Less time-consuming operation

Disadvantages of Electronic Megger

Requires an external source of energy to energize i.e. Dry cell

High initial cost

Related Read: Hazards Related to Electric Cable Insulation in Case of Fire

Handheld Type Meggar:

The handheld type megger is still used on the ship as it provides service without the need of battery and external power source. The main parts of such megger testing unit comprise of:

Display:- An Analog display is provided, which is a pointer and a scale, to show the IR value recording.

Hand Crank: As this a manually operated megger, a hand crank is provided which can be rotated to generate the required voltage, which runs through the electrical system for an insulation resistance test.

Wire Leads:- Two wire leads are provided which can be connected to the electrical system which needs to be checked.

Advantages of Hand Operated Megger

No external source required to operate

Excellent choice for emergency use

Cheaper than the electrical megger

Disadvantages of Hand Operated Megger

At least 2 ship staff are required for operating handheld megger. one for rotating the crank and other to connect wire leads to test the IR of the equipment

Not highly accurate as electronic megger as the value will vary with rotation of the crank.

It needs a stable place to operate and record the IR value, which is a little difficult to find at work sites.

Unstable placement of tester may impact the result of IR value.

Provides an analogue display result.

Require very high care and safety during use of the same.

Time-consuming operation

Principle Of Megger Operation

The megger works on the principle of the moving coil instrument, which states then when a conductor carrying current is placed in a magnetic field, a force is exerted on the conductor.

As seen in the figure below, when the current carrying conductor comes in the magnetic field of the permanent magnet, a defecting torque is produced, which moves the pointer in the scale.

Construction Of Megger

The important construction features of Megger consist of following parts:

Control and Deflecting coil: They are normally mounted at right angle to each other and connected parallel to the generator. The polarities are such that the torque produced by them is in the opposite direction

Permanent Magnet: Permanent magnet with north and south poles to produce a magnetic effect for deflection of the pointer.

Pointer and scale: A pointer is attached to the coils and end of the pointer float on a scale which is in the range from “zero” to “infinity”. The unit for this is “ohms”.

D.C generator or battery connection: Testing voltage is supplied by hand operated D.C generator for manual operated Megger and a battery and electronic voltage charger for automatic type Megger.

Pressure coil and current coil: Provided for preventing damage to the instrument in case of low external source resistance.

Working Of Megger

The voltage for testing is supplied by a hand generator incorporated in the instrument or by battery or electronic voltage charger. It is usually 250V or 500V and is smaller in size.

A test volt of 500V D.C is suitable for testing ship’s equipment operating at 440V A.C. Test voltage of 1000V to 5000V is used onboard for high voltage system onboard.

The current carrying coil (deflecting coil) is connected in series and carries the current taken by the circuit under test. The pressure coil (control coil) is connected across the circuit.

Current limiting resistor – CCR and PCR are connected in series with pressure and current coil to prevent damage in case of low resistance in the external source.

In hand generator, the armature is moving in the field of a permanent magnet or vice versa, to generate a test voltage by electromagnetic induction effect.

With an increase of potential voltage across the external circuit, the deflection of the pointer increases; and with an increase of current, the deflection of pointer decrease so the resultant torque on the movement is directly proportional to the potential difference and inversely proportional to the resistance.

When the external circuit is open, torque due to voltage coil will be maximum and the pointer will read “infinity”. When there is short circuit the pointer will read “0”.

General Inspection of Megger

– Check for loose connections, defective insulation, and cleanliness

– Check meter stop and pointer for damage

– Check the carrying case for corrosion, foam fungus etc.

– Check for easy cranking arrangement for mechanical megger

– Check the foam rubber lining if fitted

– Check the battery level for digital megger

– Check all indicators are working fine

General Maintenance of Megger:

Digital multimeter is provided with a fuse. Replace it if the megger is not working

Clean the surface from dust, dirt, grease fungus etc.

Remove dust or dirt from terminals with a soft brush

Clean the display using a soft cloth

Clean the cables, meter glass, and the exterior surface with a clean, soft cloth. Dampen the cloth with water if required

What Things to Record After a Megger Test?

When performing a megger test on machinery or equipment, following things to be recorded:

Name and location of the equipment/ wiring

Date on which the test is performed

The Insulation Resistance values of test results along with time

Range, voltage, and serial number of the Megger instrument used

The temperature of the apparatus during the time of IR test

When doing IR test of bigger machines such as alternator, transformer etc. wet and dry bulb temperatures and dew-point determinations to be noted

Insulation resistance measurement corrected for temperature

Related Read: Important Points to Consider While Carrying out Alternator Maintenance on Ship

Always remember to disconnect the machinery and equipment being tested for insulation resistance as there is a possibility of voltages being induced in apparatus under test or lines to which it is connected (because of proximity to energized high voltage equipment). Use required PPEs such as rubber gloves etc. when connecting the wire leads to test the apparatus for performing the insulation resistance test.

Some megger may be provided with a voltage scale to ensure the line to be tested does not have any voltage for insulation testing.

Disclaimer: The authors’ views expressed in this article do not necessarily reflect the views of Marine Insight. Data and charts, if used, in the article have been sourced from available information and have not been authenticated by any statutory authority. The author and Marine Insight do not claim it to be accurate nor accept any responsibility for the same. The views constitute only the opinions and do not constitute any guidelines or recommendation on any course of action to be followed by the reader.

The article or images cannot be reproduced, copied, shared or used in any form without the permission of the author and Marine Insight.

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freya-blog25 · 6 years

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