review of Extech MM570A - anyone wants a review?? - Page 1
Forum section: electronics / general

author: SnakeBite
author_rank: Regular Contributor
timestamp: May 05, 2011, 08:35:41 am
content: Hello Dave , can you please ask Extech to send you this meter for review??and if you will get it can you compare it with the Fluke and the Gossen Mertowatt.spec:*Full range multimeter functions with0.02%basic DCV accuracy and up to 100kHz True RMS ACV bandwidth*50,000 count (500,000 for DCV and Hz)backlit LCD display with bargraph*Special True RMS combination AC+DC function for measurements of rectified AC (non-symmetrical) voltage & current waveforms*Filtered frequency function with adjustable trigger levels for variable speed motor drives and high voltage applications*AC/DC current to 10A with0.01µA resolution*4 to 20mA, displayed as 0-100% for process current measurements*Capacitance, Frequency, Resistance, Continuity, Duty cycle and Diode tests with 100V input protection on all functions*Dual input Temperaturefunction -58 to 1832°F (-50 to 1000°C ) with T1, T2 and T1-T2 display in °F or °C*High resolution to 1µV, 0.0001Hz, 0.01Ohm, 0.01µA and 0.1°*Max/Min recording with autoranging, Auto Power off, Relative & Hold, Peak function captures transient pulses*Optional Windows® compatible PC communication software and optically isolated cable*Complete with test leads, Type K thermocouple probe, protective holster with stand and 9V batterylink to the product pagehttp://www.extech.com/instruments/product.asp?catid=48&prodid=284ThanksIdo

author: EEVblog
author_rank: Unknown
timestamp: May 05, 2011, 08:58:25 am
content: I could try.Anyone else interested in a review of this meter?Dave.

author: TheEENerd
author_rank: Contributor
timestamp: May 05, 2011, 04:39:31 pm
content: Yes, absolutely!

author: zaoka
author_rank: Frequent Contributor
timestamp: May 05, 2011, 05:47:48 pm
content: Yes of course!!!However, do not forget that Gossen MetraWorld!Also I would love to see Hioki 3804-50, its only $100 and does a lot.

author: gobblegobble
author_rank: Regular Contributor
timestamp: May 05, 2011, 05:52:59 pm
content: How about a high-end multimeter roundup? You did a 50 dollar roundup and a 100 dollar roundup. Now show us what could we get for spending much more.

author: Mechatrommer
author_rank: Super Contributor
timestamp: May 05, 2011, 06:38:54 pm
content: Quote from: zaoka on May 05, 2011, 05:47:48 pmgossen metrawatt the name i think. dont forget to review where can be bought online and ship internationally.

author: firewalker
author_rank: Super Contributor
timestamp: May 05, 2011, 06:59:02 pm
content: I am very interested for it!I like ExTech very much since they talk directly to us, via your blogs and taking in account your remarks.

author: Tony R
author_rank: Regular Contributor
timestamp: May 05, 2011, 07:11:25 pm
content: usually when i think of Extech meters i see them as a compromise between high end and el-cheepo, but a 500,000 count display? it actualy looks rather decent, so yea i would be interested in seeing how it actually performs compared to other higher end ones.

author: dengorius
author_rank: Regular Contributor
timestamp: May 05, 2011, 07:27:19 pm
content: Of course, count me in!

author: alexwhittemore
author_rank: Frequent Contributor
timestamp: May 05, 2011, 10:57:41 pm
content: For sure! I'd second a high-ed roundup, as well (assuming you can get samples, wouldn't want you bankrolling!)

author: zaoka
author_rank: Frequent Contributor
timestamp: May 05, 2011, 11:56:15 pm
content: Quote from: Mechatrommer on May 05, 2011, 06:38:54 pmGossen Metrawatt is the company name, MetraHitWorld is the model name of the meter Dave has.

author: EEVblog
author_rank: Unknown
timestamp: May 06, 2011, 01:06:49 am
content: Quote from: zaoka on May 05, 2011, 05:47:48 pmI know!, I've had it for so long now, and use it every day.It's just got so many damn features it'll take forever to shoot a review of it, that's why I've been putting it off!Soon...Dave.

author: EEVblog
author_rank: Unknown
timestamp: May 06, 2011, 01:10:36 am
content: Quote from: zaoka on May 05, 2011, 11:56:15 pmI have a Metrahit Xtra, Metrahit World, and Metrahit Energy.I got the Metrahit World more than a year ago along with the Xtra but the one I got failed, so Gossen asked to hold off on the review of it till they looked into it. They never got back, and I never bothered to review it! It's basically an expensive low end electrical meter, probably not worth reviewing?Dave.

author: zaoka
author_rank: Frequent Contributor
timestamp: May 06, 2011, 06:37:01 pm
content: It is very expensivemust be a good quality..its up to youI would love to try it few weeks.. thats for sureThere is another meter with impressive features, 5 times per second reading update and 60 per second for bar graph, its Sanwa PC510a, cost a bit less than $200. If quality of the meter is OK this could be good choice...I think accuracy is very close or better than Fluke 87.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: May 06, 2011, 07:32:17 pm
content: I do not have an opinion about the quality of the Extech MM570A .But as long it claims data logging , and uses an almost identical generic software ,that is also used by those cheap ones.http://progshop.com/shop/multimeter/multimeter-bxm280.htmlI would be less optimistic , about the over all picture about it.About the amount of counts, my own needs are up to 40.000 max.( I like to test my own professional DC PSU , that has an output up to 35V )And so I can not be impressed by the 50,000 counts ,I would had no way to test it ..

author: TheMax
author_rank: Newbie
timestamp: July 21, 2011, 06:33:29 pm
content: Hi Dave, Hello everybody,Dave compliments for your great website!I really like your professional reviews, your sense of humour and especially "Don't turn it on....take it APARRRRRRRTTT"Brilliant!!Yes, I am very interested in a future review of the Extech MM570, and also the Extech EX570.I am curious whether Extech can compete or even outperform the Agilent U1250 series, and Fluke 88V Automotive (price/quality)Because I am interested in Automotive, duty cycle, frequency and an accurate temperature measurement are also important for me besides the basic functionality.Keep up the good work!Greetings, Max

author: patb
author_rank: Regular Contributor
timestamp: July 21, 2011, 06:52:55 pm
content: Looks like MM560 and MM570 digital multimeters from EXTECH are really re-badged DMM from Brymen - Taiwanese manufacturer.EXTECH MM560 = Brymen BM857a (http://www.tme.eu/html/EN/professional-digital-multimeters-bm857a/ramka_7055_EN_pelny.html)EXTECH MM570 = Brymen BM859CFa (http://www.tme.eu/html/EN/bm859cf-professional-true-rms-multimeters/ramka_2930_EN_pelny.html)As far as I know those models share the same specs. The only difference is in enclosure/button colors. Other than that they are probably the same devices inside. In Poland Brymen costs 30-40% less than EXTECH equivalent. Of course, the question here is about support, guarantee etc. Anyway, I own BM857a for almost 2 years. So far no problems at all.

author: Kiriakos-GR
author_rank: Super Contributor
timestamp: July 21, 2011, 11:00:53 pm
content: Quote from: SnakeBite on May 05, 2011, 08:35:41 amIf this voltage it is true, then this DMM its a toy.Not even an unique characteristic on it.I am 50/50 % .

author: wade
author_rank: Newbie
timestamp: August 31, 2012, 09:50:56 pm
content: I know this is an old, inactive post, but I just read it since I am in the market for the Extech MM570A meter. I had been researching it not too long ago and I notice an error in the specs from the original post and also quoted the previous comment:Quote from: Kiriakos-GR on July 21, 2011, 11:00:53 pmI double checked this because I thought that 100V protection is not much when much less meters have 600V protection and I thought this meter was closer to a Fluke than most other Extech models. Actually, checking Extech's website and PDF data sheet, the MM570A is documented as having1000V protection on all functions. The original poster must have copied and pasted the specs from testequipmentdepot.com because they have the same exact misprint in their specs.Here are the relevant links.Extech website for MM570Ahttp://www.extech.com/instruments/product.asp?catid=48&prodid=284Extech data sheet for MM570Ahttp://www.extech.com/instruments/resources/datasheets/MM560A_MM570Adata.pdfMisprint on testequipmentdepot.com's website (listed as 100V instead of 1000V protection)http://www.testequipmentdepot.com/extech/multimeters/mm570a.htmI hope this helps anyone looking into the Extech MM570A meter. Just be sure to do your own independent research when considering the specs of a device before making a purchase and never, ever rely on specs posted anywhere other than the manufacturer's web site and/or documentation. I always like to download and read the PDF manual of a device before purchasing to be sure I know what I am getting into and just not relying on the Internet for specs when I am spending more than a $200. Just my thoughts.I like this meter and I am on the fence about getting this plus a BK Precision 2712 (so I can have 2 decent meters now) or just spending all of my budget on a single Fluke 289...that's a topic for another post.

author: remy_m
author_rank: Newbie
timestamp: October 02, 2012, 08:00:58 pm
content: Count me in.

author: SnakeBite
author_rank: Regular Contributor
timestamp: January 19, 2013, 10:51:23 pm
content: i bought this meter - the EXTECH MM570 (not the new mm570a - but it has the same spec)

author: nanofrog
author_rank: Super Contributor
timestamp: January 25, 2013, 11:01:55 am
content: Quote from: SnakeBite on January 19, 2013, 10:51:23 pmI wonder if it has similar/identical internals as the BM857a I have (date codes indicated 2000 for a manufacture date).Teardown pics in the Extech MM570A thread if you're interested in giving them a look.