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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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7th May 2018, 9:59 am | #81 | |
Dekatron
Join Date: Jul 2007
Location: Evesham, Worcestershire, UK.
Posts: 4,241
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Re: Help on buying a multimeter
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I'd hope that your expensive Tenma is better than the ones we bought. I can't remember the model number, but we only paid £30-40 for them. They lasted about 2 years of very light use before we scrapped them - meanwhile the 1980s Fluke 75s are still going strong. The faults they developed were numerous, but the "best" one would intermittently lock up, showing 0.000 in the display, irrespective of the applied voltage - obviously this is about as dangerous as it gets! I kept the PCB from one of these, and the UNI-T model number is on the silk screen - I'll remind myself of it when I get back to work. I keep it to show people the difference between cheap junk and Fluke. The thing about UNI-T is that they do make some reasonable meters, but they also make very poor ones - so without having seen a decent review first, what you end up with really is a matter of luck. I wouldn't place any faith in the CAT ratings either. As you'll see from my UT61E review, they are no more trustworthy than any of the super-cheap brands. |
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7th May 2018, 10:25 am | #82 | |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,941
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Re: Help on buying a multimeter
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But the manual says that it is suitable for indoor use only - so outdoors in a puddle is verboten Ah - downloading the manual the fuses are specified as: Fuse 1: 0.5A,1000V, fast type fuse, 10.3X38mm Fuse 2: 10A,1000V, fast type fuse, 6.3X32mm Which are the real deal. And a factor of four or five cheaper and more fully featured than a Fluke. Craig |
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7th May 2018, 10:38 am | #83 | |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,526
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Re: Help on buying a multimeter
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(Actually some posh ones will have a >xxGohm input resistance selectable on low voltage dc ranges- very useful for measuring voltage across high value resistors in low voltage semiconductor circuits) An AVO 8 on >250V range has a higher input resistance than a cheap (1Mohm) DMM.
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7th May 2018, 10:42 am | #84 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,192
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Re: Help on buying a multimeter
As the OP has decided to leave the forums I'll close this thread.
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |