I have a Hyelec MS89 multi meter I bought a while back,just a Chinese cheaply! 30 or 40 quid or there abouts. I've used it for odd jobs for a couple of years.
I got a Extech Ex505 multi meter and a Tenma 30V 5A PSU recently when I decided to get into hobby electronics. The Extech i got from eBay 2nd hand still boxed and looks as new,the Tenma I got new from Farnell.
Today I tested both meters taking readings simultaneously from my Tenma both under load and not.
The results have left me a bit puzzled.
The Hyelec display matched the PSU display spot on apart from 2 measurements and those were like 6.38V on the PSU and the meter read 6.37V and another one similar to that. I literally took 100s just changing the PSU Volts and watching the cheapo meter shadow it almost flawlessly.
When I stuck the Extech on it was reading a bit out. Like 5V don't the PSU and 4.87V on the meter,3.7V on the PSU and 3.48V on the meter. Just at rest the meter in DC mode measuring MV jumps around a bit.
The Extech is the more expensive by quite a bit but I'm wondering if its toast,maybe took a knock or something.
Anyone any thoughts on this?
I got a Extech Ex505 multi meter and a Tenma 30V 5A PSU recently when I decided to get into hobby electronics. The Extech i got from eBay 2nd hand still boxed and looks as new,the Tenma I got new from Farnell.
Today I tested both meters taking readings simultaneously from my Tenma both under load and not.
The results have left me a bit puzzled.
The Hyelec display matched the PSU display spot on apart from 2 measurements and those were like 6.38V on the PSU and the meter read 6.37V and another one similar to that. I literally took 100s just changing the PSU Volts and watching the cheapo meter shadow it almost flawlessly.
When I stuck the Extech on it was reading a bit out. Like 5V don't the PSU and 4.87V on the meter,3.7V on the PSU and 3.48V on the meter. Just at rest the meter in DC mode measuring MV jumps around a bit.
The Extech is the more expensive by quite a bit but I'm wondering if its toast,maybe took a knock or something.
Anyone any thoughts on this?