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Mastech MS5308 LCR meter with ESR measurement - on discount at the moment
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jtronix:
i'm planning to buy LCR with ESR meter. i've seen Mastech MS5308, UNIT UT612, Agilent U1733C.

Agilent is too costly and i'm not sure whether it can be use as in circuit tester

i'm not able to find actual UNIT UT612 specification and also have doubt in in circuit measurement

Mastech MS5308 looks good and cheaper than Agilent. but i have doubt of in circuit measurement of capacitance and ESR, accuracy and quality of product.
any body using this meter hows it please share your experience

please suggest me which one is good among this three.  or should i buy only incircuit ESR meter seperatly.

please clear my question

T4P:
Mastech is definitely heads-up for quality, accuracy is fairly good
UNI-T uses the same CHIP
If you no doubt of the UT612 you have no doubt of the MS5308 + you get better leads with mastech, not a crappy SMD kelvin leads that look straight out of a 90s LCR meter brochure
http://www.precisegauge.com/index.php?main_page=product_info&cPath=106&products_id=436
Click on the image in the url for the item above and see the accessories, this is the main reason why i'm not buying the UT612 even if i'm a slightly hardcore UNI-T fan(probably but Aurora has a UNI-T toolkit ...  :P https://www.eevblog.com/forum/product-reviews-photos-and-discussion/uni-t-ut61e-multimeter-teardown-photos/msg81221/#msg81221)
Wytnucls:

--- Quote from: jtronix on November 17, 2012, 05:07:01 pm ---i'm planning to buy LCR with ESR meter. i've seen Mastech MS5308, UNIT UT612, Agilent U1733C.
i'm not able to find actual UNIT UT612 specification and also have doubt in in circuit measurement

--- End quote ---
https://www.eevblog.com/forum/product-reviews-photos-and-discussion/uni-trend-2013-catalogue/?action=dlattach;attach=33208;image
LaurenceW:
The larger the capacitance, and/or the higher the test frequency, the lower will be the capacitor's impedance. Large caps at high test frequencies result in immeasurably small AC values across the Device Under Test (DUT)  - that's what I am driving at. I didn't ever bother trying to test the 470uF above 1 KHz.

Summary - these ESR meters ARE DESIGNED to measure components in circuit. The onus is still on the user to understand enough about electronics in general, and the circuit under test in particular, to know if such measurements are indeed valid. Collections of closely wired networks of power inductors and filter caps in power supplies, or smaller components in complex close configurations in filters, will interfere with one another, when you try and take measurements on an individual component. No ESR meter can circumvent this!

I have a Mastech 5308, and it suits my Hobby/home purpose. I probably wouldn't specify it for use on a production line. I've no doubt the Agilent is even better - and so it should be! But I just have no need for any such Betterness.  (I think I might have just made that word up).

Not a great fan of UNI-T equipment at all, but no experience of their LCR meter.  If I have one criticism of my Mastech, it is that it comes in a larger case that is really at all necessary. The UNI-T's more "multimeter style/size" case might win some people over.

<EDIT> Does the UNI-T device use the small 9V ("PP3" if you are old enough...) batteries? Hmm...the chipsets in these ~$150 meters will burn through little batteries in double-quick time (22 mA draw with the backlight on). The MS5308 does use 8 AA batteries.
KD0CAC John:
I just sent off for the Mastech and was a little weary of the register questions Precisegauge , too much info , date of birth etc.
Got for the sale price of $150 + $45 shipping so cheaper than another source $211 free shipping .
The day after there was a classifieds sale of Tenma 72-960 for $90 shipped , that always happens :(
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