Multi-Meter advice...
I need a new multi-meter. Anyone have this one: Innova 3320 Auto-Ranging Digital Multimeter? LINK Thanks.
Forum Discussion
I have a collection of multi-meters (Hazard of Electroincs as a hobby and being certified in the field).
One is a 50 or 60 dollar Sears job, does everything that meter does, Clamp on AC/DC amps, frequency, capacity, temperature and a couple other tests. (Not sure about battery test though, but then I know how to do that).
Some were gotten at Harbor Freight in the zero to 10 dollar range.
One is a Radio Shack I thin 250 list (Purchesed for less) alas it has a problem, but when new it did everything the Crafstmand did (Temp included) except clamp on.. Fits a FLUKE case like it was designed for it, but something smoked.
One thing you need to know is this,, Meters have error rates,, You need to "calibrate" the meter. Two ways to so this one is to use a reference test device (Example a brand new never been used carbon zinc D Cell) and another is to compare to a known meter... Consistancy is more improtant than accuracy once you know the error rate.
That is if you hook it to a battery that is 12.5 volts, and it shows 12.9,, Consistance = IT WILL ALWAYS show 12.9,, and if you know the error you can ajust. Accuracy (Which also requires consistancy) is showing 12.5.
Which ones do I use the most: Generally the cheaper ones,, why, If they get damaged, no great loss. But when I need it the crafstman is right nice.
One is a 50 or 60 dollar Sears job, does everything that meter does, Clamp on AC/DC amps, frequency, capacity, temperature and a couple other tests. (Not sure about battery test though, but then I know how to do that).
Some were gotten at Harbor Freight in the zero to 10 dollar range.
One is a Radio Shack I thin 250 list (Purchesed for less) alas it has a problem, but when new it did everything the Crafstmand did (Temp included) except clamp on.. Fits a FLUKE case like it was designed for it, but something smoked.
One thing you need to know is this,, Meters have error rates,, You need to "calibrate" the meter. Two ways to so this one is to use a reference test device (Example a brand new never been used carbon zinc D Cell) and another is to compare to a known meter... Consistancy is more improtant than accuracy once you know the error rate.
That is if you hook it to a battery that is 12.5 volts, and it shows 12.9,, Consistance = IT WILL ALWAYS show 12.9,, and if you know the error you can ajust. Accuracy (Which also requires consistancy) is showing 12.5.
Which ones do I use the most: Generally the cheaper ones,, why, If they get damaged, no great loss. But when I need it the crafstman is right nice.
