Electrical test and measurement equipment reviews.

ITTSB Blog

Industrial Test Tools Scoreboard
Reviews of ONLY THE BEST !!   Tools for truly experienced and productive human brains.
    Written by: Kiriakos A. Triantafillou, Industrial maintenance electrician, Hellas. (2012 -> 2023 -> 2025)
Digital Multimeter, Clamp on meter, Oscilloscope, Electronic component testing tools.

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 Note: Front page includes recent Blog activities  (past two years)… For older Reviews use navigation buttons
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Last update 19 January 2023
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Massive test of high quality multimeter regarding ammeter burden voltage
Burden Voltage this is most essential and frequently overlooked enemy of a perfect measurement.
An ammeter shunt allows the measurement of current but such a resistor will introduce losses which we should calculate manually.

Since January 2019, ITTSB blog toolbox this now includes a benchtop 6 ½ DMM with basic V DC accuracy of 0.0024 % , this is lots of precision and one of best applications’ using it, this is exploration of Burden Voltage at handheld DMM.
Kiriakos Project !!   High precision resistors + Made in Greece creativity!
First project
Resistors box for insulation resistance testers calibration inspection up to 4000 V POWERTRON GST4020
Second project
Seven dial decade resistance box for multimeter calibration inspection.
Hermetically sealed Vishay Foil Resistors
Third project
Ultra-High precision resistance box exclusively made for bench top multimeter calibration inspection.
Hermetically sealed Vishay Foil Resistors
Calibration standard class.
POWERTRON GST4020 ITTSB project 2017 Ultra High Precision resistors Box High Precision Decade resistors Box
7 April 2020:  Data Logging Software Development Project     Japan & Greece
"Gentlemen, START your engines"
Get ready to discover the Freeware data logging software, benchtop support added beginning of 2020, today this is a Priceless companion for our “digitally measuring investments”.
Software for FLUKE: 8846A, 8845A, FLK45, DMM4050, DMM4040  (Digital multimeter)
I was had to get challenged with SCPI commands syntax for two months, but We Made it !!!
Link to: TsDMMViewer Multimeter Data logger Software - Review
Link to: TsDMMViewer & FLUKE 8846A Precision multimeter, RS232C Connectivity, Help and Tips.
New Forum section at 2019  .. Used Bench top multimeter under the microscope..
In contrast with the market of handheld multimeter which this demonstrated since 2010 and later a significant quantity of modernized instruments, market segment of benchtop multimeter did not follow a similar progressive path.
A few brands just modernised product exterior design of their 6 ½ digit DMM, by setting their expectations at price tag of 3000 Euro which this is extremely high for the working class of electrical or electronics freelancer trouble-shooter.

Expected self adjusting move, when benchtop DMM market this facing such pricing anomalies this is consumer’s attention to steer at used equipments.
I did my best at exploring past champions of the year 2000 and after, and now at ITTSB Blog forum you may read tips which will help you regarding buyer expectations relative to software support, spare parts availability and product support (if there is any of those still offered by the manufacturer).
July 2020:  Exploring contact resistance of Molex connectors and pins

Bad connection of a single Molex pin this caused damage at 750W PC power supply.


They say that the Devil he gets hidding behind the details.

This occasion reminds attack from the back in to a dark alley.


No warning, no time to respond, and now I am investigating the crime scene for clues by the use of best electrical test and measurement equipment.

February 2021: Four Wires resistance measurement under Asian sabotage.
Four wires resistance measurement this is under sabotage at our times, mostly because modern manufacturing methods at China mainland, these now delivering to us unworthy in quality test leads and Kelvin clips, these be made due recycled scrap metals.

By the use of conventional but qualifying benchtop multimeter, the ones using Law of Ohm and DC current with stable polarity. At very low resistance measurements the quality of test wires and clips this is highly important, because any unjustified high EMF this will destroy the measurement.

Modern technology this found at dedicated high precision resistance meters, this is the use of reversal polarity of pulses instead. Due this new method the expected thermal EMF influence this is minimised, the measurement now becomes stable and more accurate. But if even under this method there is still instability? this is good indication to alert us, that there is severe EMF this caused due severely dissimilar metals.   

This is of how I did get alerted and started to further investigate, now I am aware that low-cost test wires and clips along banana plugs and even BNC connectors, these are not worth buying and neither gold paint used at toys making, this does not make them any better (fake Gold-Plated goods).

Best defence against the Asian sabotage, this is you stop paying money for such products.


May 2021 CANARE L-4E6S Best cable for DMM Kelvin clips (DIY project).

Here is my latest Blog post in favour of an excellent product made by Canare Electric Co., Ltd. In Japan.  

It is unfortunate that most known named as A Brand, at electrical test and measurement they now focusing making money from newest industry application and they overlook to modernise the R&D of  fundamental accessories which serving benchtop multimeter.

The L-4E6S cable this a product solution in full compliance even to strict Best practices that Electrical metrology imposes to us, for retaining of quality at precision electrical measurements.

This is my eighth year of Blogging, my work bench this is now full of precision equipment for all sorts of electrical measurements, along of very expensive calibration standards.  Even so I was missing of a KELVIN clips harness this capable to offer noiseless measurements at all times.

My attempt for DIY solution ended to complete success, and now I can brag that an electrician were saved by one industry that their brand name ends to Electric Co., Ltd.

CANARE L-4E6S Cable Review

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Kiriakos Triantafillou © 2012 - 2025

Name space registered to  EURid  May 8, 2012

 The return of VARIAC …  Inverters & ups testing , ITTSB Project
Ups and inverters testing after repair, this is a necessary action for any Industrial Maintenance Electrician or Electronics troubleshooter whom respects his reputation.
VARIAC adjustable transformer this is still most inexpensive and effective way having an adjustable ACV power source in your hands.  

Instead getting a cheap poor quality VARIAC assembled in China or India (unreliable toys for hobbyists), I did follow route of DIY just for product design and case selection.

Most essential parts at this VARIAC project are the finest ones still available in our decade.
The outcome this is now a professionally grade adjustable ACV source for 0~270 Volts (VARIAC adjustable transformer among with Single Phase Voltage and Current Breakout Box, and a basic ACA 2x150W loads.

Regarding bill of materials and cost estimates, I did follow cost effective path but even so by using exclusively highest quality of parts, them complying to most recent IEC directives’.

I like to thanks DER EE ELECTRICAL METER CO. LTD. in Taiwan for their sponsoring of all necessary  analogue meters for those two ITTSB Blog projects’ !!  
Relative WEB Links

June 2021 & ITTSB Blog Celebrates nine years of activity

Along the offering of DMM repair services within EU

My new problem, this is that now I am in love, at getting involved with that non popular science, this loaded with so much complexity, this be combination of academia with electrical measurements and relative products and everything comes down to electrical and electronic applications.

Nine years ago I was 43 years old and now I am 53,  and as you get older and wiser, the art of content creation this transform to a bigger challenge for your own brain and your eyes and your body.

This is why I made the choice in the past three years  of me to get involved only with worthwhile product review projects, when and if they appear.

The NEW Blog post bellow this is a window for you to enter to my off-line world and at my very own electronics repairs lab but not in the form of showroom. So far my technical skills at repairing benchtop multimeter since 2009, these were known to a very few people along specific private industries these serving national defence in Greece.

Now its time for new actions and deployment of fresh future plans,  therefore if you need help about having serviced / repaired an benchtop multimeter at 6 ½ digits resolution and this is made by FLUKE / Tektronix, them feel free to contact me due email.  To clarify I am freelancer and your last hope, when you need an of the chart solution with a friendlier repair bill.

While this is a festive day for ITTSB Blog as Internet project, I did select this day too, so to announce and or advertise this new available offering, of multimeter repair services, available exclusively within European union.

Note: FLUKE brand T-shirt this is an old gift,

and this still going strong after be washed over and over in the past eight years.

 I have also one from HIOKI brand and two of Agilent technologies DMM division, along of one from Agilent technologies oscilloscope division and the specific one this is my winter time dress code.  

FLUKE 8846A Calibration test 2021


New since 2021

Benchtop DMM repair services

Greece and EU

Use ITTSB Blog email address, for more information's.


New since 2021

Benchtop DMM repair services

Greece and EU

Use ITTSB Blog email address, for more information's.

Product REVIEW Announcement: Three Seasonic PSU units arrived at ITTSB Blog in the heart of the Greek summer.  


PRIME TX 750 & PRIME Fanless TX 700 (both 80 Plus Titanium), along G12 GC 650 (80 Plus Gold)

Seasonic since 1975 = Taiwanese owned factory of SMPS (switched mode power supply), it serves markets of industrial grade PSU.

In 1981 Sea Sonic expanded into the production of PC power supplies to become one of the first manufacturers in this market, now its popular choice of computer builders, premium desktop computers along E-Sports 1000+ Watt PSU units.


CEO founder Vinced Chang, a man with rich technical education, and even collaborated in projects of giants as is INTEL and SIEMENS.

 

Upcoming review article this is expected soon, by the eyes of the industrial electrician (as always).

I will use electrical metrology as magnifying glass, so to review Seasonic’s latest development of  +/_ 0,5 % 12V Rail MTLR.

I will also use my own testing pattern for PSU good operation verification, I do repair SMPS at the past fifteen years.

Now you may enjoy product samples arrival, ITTSB photographs gallery posted at ITTSB Forum section.


New since 2021

Benchtop DMM repair services

Greece and EU

Use ITTSB Blog email address, for more information's.

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ITTSB Mini Articles

My personal viewpoints, comments, News.

28 May 2014

Safe 220V & 380V measurements with a bench top Oscilloscope by using one differential probe.

The Bottom line is that you can not avoid paying the price for a true differential probe if what you have in mind is work instead play.

Intro:

I am now an 45 years old electrician, and today I am able to see the Mains voltage and measure its and every parameter.

Never thought that my first class oscilloscope with the differential probe hooked up, that has so much to offer.  

#

My first FLUKE 87V meter mini adventure (8-2010)

FLUKE 87V GSM issue

Burn in of OLED's is a known problem (8-2012)

#

2012

2013

Four Industrial handheld multimeter's tested above the 1000 ACV mark.

Monday 1 February 2016

ITTSB Blog up to date this performed many individual reviews of handheld multimeter, this latest benchmark has to do with the performance of four full size multimeter's when them get tested out of their measuring specifications’ that is above the 1000 ACV range.


Few months back I started thinking to build for my lab one amplifier which this in combination with a function generator, it will work as adjustable ACV source …….

Mini articles archives
Multimeter them getting constantly improved because ITTSB Blog it does record engineering innovations and even past made mistakes.   
ITTSB Blog forum this is extension of ITTSB Blog and blogging activity this is far more frequent and topics they do cover far more wide spectrum.
Click over the image so to discover it too !      


New since 2021

Benchtop DMM repair services

Greece and EU

Use ITTSB Blog email address, for more information's.


New since 2021

Benchtop DMM repair services

Greece and EU

Use ITTSB Blog email address, for more information's.

News corner (past 12 months Blog life Log)..

Latest announcement:

September 8 2022

I have started working in a new project, at making my own triple DC rail dummy load, two load settings per rail at 3.3V and 5V, and five load settings for 12V, according to 80PLUS standard at 10% and 50% of load for a 750W PSU.

October 3 update: My DIY PSU loader this is almost ready, I am using parts that I already own, combining them and assembly time takes a bit longer. I did find some inspiration from Seasonic and of their nineteen years old power efficiency testing kit.

June 27 2022

Sea Sonic Electronics Co., Ltd  Computer Power supply ODM (Taiwan) along Nils Stallmach channel Director Seasonic Europe.

We agreed for a fresh collaboration that is product review due ITTSB Blog Europe, of several PSU units.

In detail: Two best ambassadors of newest 2021 Titanium series, TX750 along of TX700 Fan-Less version, and G12 650W of Gold 80Plus series this recommended for computer builders / industrial PC.

Kiriakos Triantafillou - Founder of ITTSB Blog Europe.

November 29 2022

I am after SMPS power analysis with basic tools, and I am facing new challenges and win but this takes time. Latest challenge this is me to make and boost ACA enough due a FLUKE 5500A/COIL for better balance at oscilloscope and current probe sensitivity at low current measurement.   

December 22 2022

Seasonic EU: Ten days before NEW year 2023, started the availability of Seasonic MagFlow 120mm 1225 PWM series of case fans.  Product samples received with lightning speed. At ITTSB forum you may find more details.

Seasonic MagFlow 120 mm 1225 PWM Case Fan Review ITTSB.EU

January 15 2023

At my attempt to use my oscilloscope as professional power analysis tool, I did discover the entire pack of challenges at current waveform review and Phase shift measurement when special AC/DC clamp probes are used.

Quality probes compatible for power analysis with BNC connector they do not grow over trees. These are upper-class advanced engineering and when the source this is European technology, then this is even better.

I wish to thanks PICO Technology UK, for the sponsored sample of TA189 AC/DC oscilloscope current probe !!

TA189 under the hood, this is work of (UK based) subsidiary company of Gossen Metrawatt (R&D and production year 2010).  

In summary: TA189 this is developed due power analysis specialist.

It has also won a place at automotive diagnosis as current leakage probe due it superior noise rejection for power electronics applications.

PICO Technology UK this is 12 bit USB oscilloscopes developer.

And today I do feel extremely proud, for the privilege to be the first reviewer worldwide of this superior European probe.

PICO Technology TA189 AC/DC oscilloscope current probe Review 5mA~30A Low Noise