I found a very versatile DMM since mine went bad

mcmahon48 · 28th February 2009, 01:29 AM

Here are the specs
Mastech Multimeter Lux Humidity Sound Level dB Meter
DCV: 400m/4/40/400/1000V, +/- 0.7%
ACV: 400m/4/40/400 +/- 0.8% 750V, +/- 1.0%
DCA: 400µ/4m/40m/400m +/- 1.2% 4/10A, +/- 2.0%
ACA: 400µ/4m/40m/400m +/- 1.5 % 4/10A, +/- 3.0%
Resistance: 400/4K/40K/400K/4M +/- 1.2% 40M, +/- 2.0%
Capacitance: 40n/400n/4m/40m/100mF ±3.0%
Frequency: 10/100/1K/10K/100KHz/200KHz ± 2.0%, >200KHz,reference only
Temperature: -20 - 1000 degrees C (0–1,800 degrees F ) +/- 3.0% (C/F selectable)
RH: 20–95%, +/- 5.0%
Lux: 4,000/40,000 Lux, +/- 5.0%
Sount dB: 40 – 100dB, +/- 3.5% @ 94dB
Diode test
Continuity tester: Buzzer if resistance is less than 40 ohms

BlueWizard · 28th February 2009, 05:57 AM

You forgot to mention the price.

Steve/bluewizard

mcmahon48 · 28th February 2009, 07:47 AM

79.95 at multimeter depot these are new and just came out and the winner is Me! I bought 1
I found it on ebay but you can still get it at multimeter depot on the internet

AndrewT · 28th February 2009, 08:43 AM

for a multi-purpose meter it specs very well.
I am so glad the designer saw fit to omit transistor hFE. Forcing one to use a proper test.

mcmahon48 · 28th February 2009, 08:57 AM

http://www.p-mastech.com/products/04_dm/ms8229.html

Ron E · 28th February 2009, 02:55 PM

http://www.amazon.com/Mastech-multim.../dp/B00064OZ1K
http://www.amazon.com/Mastech-Auto-R...68WR597Y0ANHZS

mcmahon48 · 28th February 2009, 08:35 PM

http://cgi.ebay.com/Mastech-Multimet...742.m153.l1262

infinia · 28th February 2009, 10:50 PM

also very similar or exactly the same
http://www.protektest.com/Prodinfo.asp?prodid=6300
Mouser.com carries it MSRP $69 USD ie can be had for less
Harbor freight "had" a rebadged one a while back for around $39.

BlueWizard · 28th February 2009, 11:31 PM

I'm curious how sound level works?

Does it have a built-in microphone? Do you add your own external mic?

I also notice that the sound level frequency response is only 100hz to 8khz. That might be good for general sound levels, but not for detailed testing.

Is that limited by the internal mic and can it be improved by adding an extremal mic?

Still, it's a sweet meter for a very modest price.

Steve/bluewizard

mcmahon48 · 1st March 2009, 09:40 AM

There is a microphone, Light meter, temptature/ humidity I will bet some one around here will figure a way to tweek it to take a microphone sooner or later. That also bring up an interesting subject who can tell us how to make a califrated spl measuring microphone up 40khz that will work with it

28th February 2009, 01:29 AM	#1
mcmahon48 diyAudio Member Join Date: Aug 2008	I found a very versatile DMM since mine went bad Here are the specs Mastech Multimeter Lux Humidity Sound Level dB Meter DCV: 400m/4/40/400/1000V, +/- 0.7% ACV: 400m/4/40/400 +/- 0.8% 750V, +/- 1.0% DCA: 400µ/4m/40m/400m +/- 1.2% 4/10A, +/- 2.0% ACA: 400µ/4m/40m/400m +/- 1.5 % 4/10A, +/- 3.0% Resistance: 400/4K/40K/400K/4M +/- 1.2% 40M, +/- 2.0% Capacitance: 40n/400n/4m/40m/100mF ±3.0% Frequency: 10/100/1K/10K/100KHz/200KHz ± 2.0%, >200KHz,reference only Temperature: -20 - 1000 degrees C (0–1,800 degrees F ) +/- 3.0% (C/F selectable) RH: 20–95%, +/- 5.0% Lux: 4,000/40,000 Lux, +/- 5.0% Sount dB: 40 – 100dB, +/- 3.5% @ 94dB Diode test Continuity tester: Buzzer if resistance is less than 40 ohms

28th February 2009, 07:47 AM	#3
mcmahon48 diyAudio Member Join Date: Aug 2008	OK Bob and here the Price is ? and the contestant that is nearest 79.95 at multimeter depot these are new and just came out and the winner is Me! I bought 1 I found it on ebay but you can still get it at multimeter depot on the internet

28th February 2009, 08:43 AM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	for a multi-purpose meter it specs very well. I am so glad the designer saw fit to omit transistor hFE. Forcing one to use a proper test. __________________ regards Andrew T.

28th February 2009, 08:57 AM	#5
mcmahon48 diyAudio Member Join Date: Aug 2008	here is the mfg webpage http://www.p-mastech.com/products/04_dm/ms8229.html

28th February 2009, 02:55 PM	#6
Ron E diyAudio Member Join Date: Jun 2002 Location: USA, MN	http://www.amazon.com/Mastech-multim.../dp/B00064OZ1K http://www.amazon.com/Mastech-Auto-R...68WR597Y0ANHZS __________________ Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan Science is a way of thinking much more than it is a body of knowledge. --Carl Sagan


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28th February 2009, 05:57 AM	#2
BlueWizard diyAudio Member Join Date: Jun 2007	You forgot to mention the price. Steve/bluewizard

28th February 2009, 08:35 PM	#7
mcmahon48 diyAudio Member Join Date: Aug 2008	this model replaces the ms8209 and on ebay http://cgi.ebay.com/Mastech-Multimet...742.m153.l1262

28th February 2009, 10:50 PM	#8
infinia diyAudio Member Join Date: May 2005 Location: Californication	Protek 6300 - 3 3/4 Digit DMM with Luminance, Sound level and Relative Humidity also very similar or exactly the same http://www.protektest.com/Prodinfo.asp?prodid=6300 Mouser.com carries it MSRP $69 USD ie can be had for less Harbor freight "had" a rebadged one a while back for around $39. __________________ like four million tons of hydrogen exploding on the sun like the whisper of the termites building castles in the dust

28th February 2009, 11:31 PM	#9
BlueWizard diyAudio Member Join Date: Jun 2007	I'm curious how sound level works? Does it have a built-in microphone? Do you add your own external mic? I also notice that the sound level frequency response is only 100hz to 8khz. That might be good for general sound levels, but not for detailed testing. Is that limited by the internal mic and can it be improved by adding an extremal mic? Still, it's a sweet meter for a very modest price. Steve/bluewizard

1st March 2009, 09:40 AM	#10
mcmahon48 diyAudio Member Join Date: Aug 2008	it has a microphone built into the bottom There is a microphone, Light meter, temptature/ humidity I will bet some one around here will figure a way to tweek it to take a microphone sooner or later. That also bring up an interesting subject who can tell us how to make a califrated spl measuring microphone up 40khz that will work with it

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