Am I being too picky or the seller did the wrong thing? - Page 1
Forum section: electronics / general

author: blueskull
author_rank: Unknown
timestamp: January 06, 2016, 01:37:17 am
content: I bought a KEI 2002 a couple days ago, and it is way out of spec in terms of noise, despite comes with a dodgy cal cert. I returned it, and accepted a replacement unit.The replacement is okay in terms of spec, but has unresponsive rubber keys that has to be pressed hard and very old front panel -- yellowed and full of scuffs.Their eBay listing of the unit is "in very good condition", and the photo as well as the previous unit looks almost in mint condition.Am I too picky on the replacement unit, or the seller just deceived me?PS. I'm not buying with some funding or with company money. All $3000 comes from my own pocket, and that is my 2 month's stipend.

author: bitseeker
author_rank: Super Contributor
timestamp: January 06, 2016, 01:56:51 am
content: If the condition of the replacement is significantly different than the original description, then it isn't a valid replacement. I don't think that's too picky. It doesn't have to be identical to the picture, but it should be reasonably comparable in visual quality.If a comparable replacement isn't available, either negotiate a partial refund or return it altogether.

author: Delta
author_rank: Super Contributor
timestamp: January 06, 2016, 01:58:08 am
content: What is it? My goooogling says it's a car!

author: Brumby
author_rank: Unknown
timestamp: January 06, 2016, 02:00:15 am
content: Quote from: Delta on January 06, 2016, 01:58:08 amI took out the space - and Google came up with a Keithley 2002 bench meter.

author: Delta
author_rank: Super Contributor
timestamp: January 06, 2016, 02:04:22 am
content: Quote from: blueskull on January 06, 2016, 02:00:27 amNot usually, but they do come with a noise figure......your exhaust can't be too loud or you can fail your roadworthiness inspection!

author: Falcon69
author_rank: Super Contributor
timestamp: January 06, 2016, 02:38:22 am
content: yes, cars come with Cal Cert...sort-of. California Emissions Certification.

author: deadlylover
author_rank: Frequent Contributor
timestamp: January 06, 2016, 03:41:15 am
content: $3000 is too much money to be unsatisfied, I'd probably return it if I were in your shoes.It sounded like an attractive deal originally because it came with a cal cert, but if it's not an accredited cal then it's basically worthless on a meter of this calibre.

author: TheSteve
author_rank: Unknown
timestamp: January 06, 2016, 04:07:31 am
content: They really should have sent pics before sending an uglier unit - although many people wouldn't notice. I know for my 3K I'd be pretty darn picky.edit - didn't your first one also include a recent Cal.? Yet it had ugly noise. Makes you wonder how good the calibration they are providing is anyway. You need some pretty darn good gear to cal an 8.5 digit meter. You'd think they should have noticed the noise on the first one.

author: TheSteve
author_rank: Unknown
timestamp: January 06, 2016, 05:34:09 am
content: Well its true you can- Maybe the seller thinks that what it means to Cal. the meter - update the date!Assuming a proper calibration house handled it part of the process would be to update the date. I am thinking they just verified a few data points matched some in house standard within spec and decided to call that "calibrated".Did they give a proper Cal. report with the equipment used etc?

author: deadlylover
author_rank: Frequent Contributor
timestamp: January 06, 2016, 06:09:42 am
content: Quote from: blueskull on January 06, 2016, 05:56:13 amTheir facility might be accredited but that doesn't necessarily mean the cal certificate you got was done at an accredited level. Most cal labs have a normal 'traceable' cal service and an accredited cal service.... I wonder which one they used for eBay items. =PThey should have marked it clearly if the test report was accredited for compliance to ISO17025, and they should specify the uncertainties of measurement of your DUT at time of calibration including the uncertainties of the standards used for calibration, not just the equipment used.There should also be a section defining the uncertainties stated in the report, like at 95% confidence interval with x degrees of freedom and stuff like that.

author: deadlylover
author_rank: Frequent Contributor
timestamp: January 06, 2016, 06:20:20 am
content: Quote from: blueskull on January 06, 2016, 06:13:58 amAhh okay that's the basic level of calibration then, unfortunately it's not worth much more than toilet paper.Good call on returning the unit.

author: Delta
author_rank: Super Contributor
timestamp: January 06, 2016, 11:59:08 am
content: Hahahahahaha! You paid three grand for a second hand multimeter?!!!You can get brand new multimeters for a tenner!

author: Galenbo
author_rank: Super Contributor
timestamp: January 06, 2016, 12:26:09 pm
content: Quote from: Delta on January 06, 2016, 11:59:08 amElement14 says 7490€+btw = 9063€, so some people must have their reasons to want this device, and only pay 33% for a used one.Can you give a typical test/cal setup where the specs of the Keithley2002 are needed, but can also be done with your cheaper device?