I own the
TIF Instruments TIF9010A
i have had a lot of scales over the years they allways go bad the same way , after it is "0"ed the numbers do not change as you are chargeing , you end up with a half charged system and no way to know how much is in there . if you power off and back on it will work fine for months then it will do it again SO DON'T BUY USED
before i bought THIS tif i would expect to get around 3 years out of one before it failed . the tif has lasted 5 years so far
my scale is used about once a week in the winter , 6 days a week in the summer, 5 times a day (we do a lot of central ac repair and commercail refrigeration i am the guy that does it all around here ) . I like my tif i would buy another if this one fails
Edited by Cactus Bob, 15 October 2013 - 02:25 PM.