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| General Advice General tips, tricks, and rules that every technician should know. |
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I take objection to the idea that digital is "stepping up" from analogue... Each are a different tool and have different applications. Where you are tracing something that is varying, analogue is often better, the movement will be easier to observe than changing numbers and you can gauge things like a miswired circuit as you wind up a variac by glancing at a meter and seeing it move like it should or otherwise. The human mind just can't do the same with moving numbers.
This is why your car still has a meter with a needle for the speedo... Beyond that ensure you have a meter of the relevant safety category for what you intend measuring... |
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That is a fair point Chris, perhaps a better phrase would be, "moving on to a DMM?" I did not mean to say that analogue meters do not have their place, only that I'd rather go to a digital one.
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Cubits will inherit the earth. We were born into cubits; into cubits we shall return. |
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I am a big fan of Tenma Meters. They are the house brand of MCM Electronics, but they are great meters. Steph just bought a clamp on meter for 30 bucks that looks to be pretty nice. I would suggest you look at just picking up a clamp on for now. Odds are it will have everything you need as long as your not doing IC repair work. I have a Tenma meter that I was given probably 12 or so years ago and it is still working great. I also have an amprobe clip on meter that works well. In storage I have one of the large Simpson analog meters. It works great... its just a bit inconvenient to carry around.
Tenma, your source for every test equipment need. |
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I have a fluke 335, my only compliant is I have not found a way to turn off the sound while checking continuity. I like having it but some times it gets annoying.
It does not measure hertz which might be handy when dealing with AC drive units but I think I will be ok |
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I have a Fluke 189 (now replaced by the 289) and really like it. It is a bit bulky but the logging functionality and the ability to directly neasure dBm or dBV can be handy.
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Brad Weber audio, audiovisual and acoustical consultant www.museav.com |
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It really boils down to what you are doing with it!
If you are just doing piddley little things a $30 meter will get you by... However if you find yourself working on a 600v motor and it's control system you'll want a hefty meter, rated for outdoors, with more functions! Frequency is something that can come in handy, but most of the time for most people it's useless... same thing with diode check, capacitance, etc. For some people Logging is a must, others it's really handy, but for most applications it's not worth the extra money. I like a DMM with an simulated analog gauge under the numbers, gives you a better feel for things fluctuating as stated before. I'd love a Fluke 744 or something along those lines as it also uses the HART communication protocol. I used the 744 in trade school, and found it much more handy than using two or three different tools. Then again how often do you use process control and HART in theatre? That $30 meter would of killed me in a few situations given what they're rated for, but then again I work with 600v sometimes at 400amp. You really do have to pay for a good meter to trust doing that kind of work. FLUKE is great, the IDEAL meters do the job well-enough too, I have one of their clamp-ons and they are cheaper than the fluke. FLUKE has a DMM selection guide on their website! Check it out! |
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This is a good time for this thread to come up as I'm probably going to ask for a quality DMM for Christmas.
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You must first know and understand the rules before you can break them. "Arc corroded lamps and bases are just like VD's, they spread through contact" Rx262310908049 Is it art yet? |
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Quote:
![]() - Harbor Freight Tools - Quality Tools at the Lowest Prices
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Yea but Santa knows I have a cheap one already.
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You must first know and understand the rules before you can break them. "Arc corroded lamps and bases are just like VD's, they spread through contact" Rx262310908049 Is it art yet? |
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