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.
Note: Front page includes recent Blog activities (past two years)… For older Reviews use navigation buttons
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!
Resistors box for insulation resistance testers calibration inspection up to 4000 V POWERTRON GST4020
Seven dial decade resistance box for multimeter calibration inspection.
Hermetically sealed Vishay Foil Resistors
Ultra-High precision resistance box exclusively made for bench top multimeter calibration inspection.
Hermetically sealed Vishay Foil Resistors
Calibration standard class.
"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 !!!
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).
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.
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’ !!
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 !