Electrical test and measurement equipment reviews.


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 - 2020 -> 2022)
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
Donate-Sponsor BRYMEN BM878 Review

BRYMEN BM878 DMM &  insulation resistance

BRYMEN welcomes 2015 with one additional product Series which was missing from their product line. BM870 Series is the combination of a fully featured multimeter with the needed functionality for insulation measurements. ITTSB will review BM878 model which combines most features for an industrial electrician.

DER EE DE-711 AC/DC     DMM current probe 67/600A

DER EE Electrical since 2013 had in their planning to release DE-711 AC/DC clamp current probe, so to work in combination with DE-208A multimeter.

DE-208A multimeter has been reviewed by ITTSB many months back, and the verdict was very positive.

DER EE DE-5004 , scheduled review 4/2020

DE-5003 & DE5004 are 2015 released products which combining for a first time worldwide, a multimeter and an LCR bridge in the same package.

Definably DER EE Electrical ltd in Taiwan worth the title, of a company which offers innovation even within 2015.

Pictures from it arrival at ITTSB Forum

Multimeter with LCR capabilities

Last update 21 June 2020
News corner (past 12 months Blog life Log)..
January 5 2020:
They say knowledge is power, this time I did dive in to software development with the assistance of an Japanese friend.
My benchtop 6 ½ Digits DMM based on 8846A hardware this is orphan from worthy data logging software since it birth at 2007.

Some one should do something about it, and I made the decision to act by my own hands, I did succeed to inspire the Japanese software developer about us to act as a team and play this game together.
One month later I had become master at FLUKE-45  programing command set and  also with RS232C hardware and software sectors.
In February I did dive in to greater depth and in to SCPI commands set and syntax of multiple commands in to a single line, this path is poorly documented and my talent at improvising was my only helper.
First day of March 2020 we manage to have in our hands our BETA  this be 90% developed, an fully functional testing software version.

I did worked so far up to 120 hours and we did exchanged over 70 emails, but no matter the involved workload, the outcome this is what history will record!    

July 21 2019: Wolfcraft hand tools maker from Germany accepted our product samples wish list and goods are on the way to Greece.
URL: https://www.ittsb.eu/forum/index.php?topic=1534.0

July 15 2019: After several years of using social media and YouTube, I decided to steer away from Twitter and YouTube, recent changes on both platforms they focus on mobile phone users rather people using desktop computers.
ITTSB Blog care for people willing to read and get detailed information of some value, therefore it will serve best our readers to focus on ITTSB Blog content by us stop using social media platforms of which we do not have any control of them.
Therefore we recommend the best way of you staying connected with our content and this is the humble bookmark!  Best simple tool this serving Blogs for decades.
URL: https://www.ittsb.eu/forum/index.php?topic=1537.0
7 April 2020:  Data Logging Software Development Project     Japan & Greece
"Gentlemen, START your engines"
Get ready to discover the Freeware data logging software this be developed beginning 2020, so this now supporting our “digitally measuring investments”.
FLUKE: 8846A, 8845A, FLK45, DMM4050, DMM4040. (among several other handheld multimeter)
I was had to get my hands dirty with SCPI commands 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.
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The content of this web site is copyright protected. You may download, display, print and reproduce this material in unaltered form only (retaining this notice) for your personal, non-commercial use or use within your organization. Apart from any use as permitted under Hellenic Copyright law, all other rights are reserved. Requests and inquiries concerning reproduction and rights should be addressed to: Kiriakos Triantafillou, 55 Gatsou, TK38333, Volos, Greece, E-mail: info@ittsb(dot)eu

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Kiriakos Triantafillou © 2012 - 2021

Name space registered to  EURid  May 8, 2012

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 most 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


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.


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)




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 !      
 The return of VARIAC …  Inverters & ups testing , ITTSB Project
Kiriakos Project !!   High precision meeting with Made in Greece creativity!
ITTSB Blog this worked hard to make happen of three projects all relative to latest high technology resistors.
Two projects are relative to Ultra High precision resistors and third this is relative to high precision & High voltage resistors.
Vishay Foil Resistors kindly offered 62  of  Ultra-High precision resistors at tightest tolerance specifications. Product series: S104K, VHP101, VHP202, VHP203, all encapsulated to metal shields for prolonged stability, and also several samples of High Value Thick Film Resistance Elements POWERTRON GST4020 series, Resistance Tolerances to ± 0.25%, TCR’s to ±25 ppm/K, them able to handle 4000 ACV

HIOKI E.E. Corporation also accepted ITTSB Blog proposal for a common presentation of their RM3542A this is Ultra-High precision resistance meter.
I have to admit that when I started my Blog I could not predict of how close I will come one day to best industries of our days.
This demonstration of trust in my name and at ITTSB Blog, it does load me with additional internal strength so to keep exploring and write content for this wonderful world of electrical measurements.

Personally I worked hard so the outcome of all three projects bellow, this to be of high quality. Practically this is a demonstration of what good skills can do by the use of Ultra-High precision parts among with high class measuring equipments.

   Now feel free to selects your next destination in the world  of high technology resistors !
First project

Resistors box  for insulation resistance testers & verification of their calibration up to 4000V POWERTRON GST4020
Second project

Seven dial decade resistance box for handheld multimeter and bench top multimeter calibration inspection.

Hermetically sealed
Vishay Foil Resistors
Calibration standard class.
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
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 or product support if there is any of that still offered by the manufacturer.
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.

Portable calibrator connected to Mains.. is this the END of it?
A little bit of you feeling tired and or a small distraction, this is you looking for trouble.
Here is my own adventure with a happy end.
Under corona virus Pan European lock-down.
Begging of April 2020
Link: This story it is hosted at ITTSB Blog Forum
I wish to thanks Time Electronics UK employees!  I did receive partial technical assistance, with the factory this be closed and help were delivered to me by their home computers.

Demonstrate your appreciation by a donation today this starting from 15 Euro, to the one whom paying ITTSB Blog monthly bills.

Thanks !