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| Brymen vs bench top multimeter |
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| J-R:
Handhelds on the bench can have some very good uses, such as to get the display right next to your face when you're probing deep inside! If you're a measurement animal, then there are some specific things certain bench DMMs can offer that can really make a difference, such as a bright and fast display with lots of statistics, nice buttons, front/rear switch (Kelvin test leads can go back there), and of course lots of options to suit various conditions, such as NPLC or different averaging modes. Does the average hobbyist NEED any of those? Not really. There is a bit of disconnect between folks who are not able or willing to spend the money, versus those who can or decide to spend their money differently. |
| tautech:
--- Quote from: J-R on April 07, 2023, 11:57:53 pm ---Handhelds on the bench can have some very good uses, such as to get the display right next to your face when you're probing deep inside! --- End quote --- A bench meter with a Hold function is much more valuable, especially when it can capture 8 successive measurements. |
| Fungus:
--- Quote from: J-R on April 07, 2023, 11:57:53 pm ---Handhelds on the bench can have some very good uses, such as to get the display right next to your face when you're probing deep inside! --- End quote --- Get one of those talking Anengs for that, it reads the values to you as you measure. :) |
| paulca:
Throwing a spanner on top of the preverbial battery. I have a use case for testing not only things like solar panels, charge controllers etc, but also multi cell batteries. The multi-cell battery problem is, I grant a bit unfair. Nobody is going to hook a 6 series battery up to 7 individual voltmeters. Thankfully there is specialist hardware ... also with varying price, accuracy and quality. I have said hardware, but it's old, crap, under-rated (3 digit) and needs up graded. Until this morning my most advanced BMS was a "Turnigy" LiPo field charge monitor (allows you to charge/discharge multi cell packs from a basic charger while it monitors and balances the cells). The "cheap" ones are usually 3 digit. The really cheap ones the accuracy is a coin toss. The slightly less cheap ones will all over-read consistently, nanny state. It's the tricky part of finding the ones which have open firmware, schematics and reviews highlighting it can be calibrated properly... at at least 4 ideally 5 digit cell voltages, at least 8 of them, but I'll not turn down 16 channels. On the bench testing a "nano" scale low power solar project with a single LiPo cell, I ended up with some really janky measuring apparatus to be able to read all the various currents and voltages. Things like: Using a PSU as a voltmeter by setting it to 0 A current limit. Using a DC Load as a voltmeter by setting it to 0 Ohms. Using an INA3321 3 channel shunt monitor module an MCU and a TFT. (not very low power though!) It's at those times having a little row of cheap 4 digit meters would be handy. This morning I got 2 JK-BMS boards. I haven't tested them yet, but they are meant to be the mutts nuts for the purpose of monitoring (and maintaining) multicell packs. |
| Fungus:
--- Quote from: paulca on April 08, 2023, 11:34:44 am ---It's at those times having a little row of cheap 4 digit meters would be handy. --- End quote --- Go to the Aneng shop and get some! Screw them to a piece of wood and you get a multimultimeter. I expect a new thread with pics when it's done. PS: Aneng usually include really bad probes in their $10 price range but they sell probes in their shop, too. You can get much better ones for a couple of $$. https://aneng.aliexpress.com/store/group/ANENG-Accessories-and-others/919484_516409721.html |
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