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| Do you guys have GAS or you buy only the gear you really need for your job? |
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| ercapoccia:
If i buy an used 34401 i imagine i'd need to send it for calibration just to be sure it is still accurate. I have no other high end gear to compare it with. But adding the price of a calibration to the cost of the meter it would be almost as expensive as a new meter that came already calibrated. Am I missing something? |
| jogri:
--- Quote from: ercapoccia on August 15, 2020, 08:34:29 pm ---If i buy an used 34401 i imagine i'd need to send it for calibration just to be sure it is still accurate. I have no other high end gear to compare it with. But adding the price of a calibration to the cost of the meter it would be almost as expensive as a new meter that came already calibrated. Am I missing something? --- End quote --- Where did you get the prices for the calibration? It shouldn't cost more than 100-150 bucks to have it calibrated (with a cal certificate), and that's if you include the cost of shipping it. This company has been recommended to me by others on the forum when i wanted to calibrate my 34401/34970 (lost its cal data and the readings were ~2% off), but i don't know if they'll ship your DMM to italy: https://www.calibrate.co.uk/calibration/electrical/ Edit: Or just ask on this forum if you don't need a calibration certificate, quite a few guys seem to be in the business of collecting old Datron/Fluke 5000 series calibrators... (Another item that i absolutely "need" on my desk) |
| ercapoccia:
From what i read a calibration would be around €150/€200 and a 34401 €250/€400 shipped that means from €400 to €600 for a used 34401 calibrated and shipped to my door. A brand new DMM6500 is €855 shipped. Maybe it is not almost the same price but it is not super cheap either. Buying used also means more time to spend searching and waiting for the shippings. If it was € 250 calibrated and shipped i'd be a no brainier. I'm totally new to this kind of equipment and i don't know the market. |
| iteratee:
--- Quote from: ercapoccia on August 15, 2020, 09:56:55 am ---How many of you have a DMMCheck Plus or equivalent? I have some cheap reference LCR and Voltage from china a couple of vishay 0,005% resistors and the lm399ah 10v reference from circuitvalley --- End quote --- I had a look at it but don't feel the need for a calibration multitool. The voltage standard is key because that's where drift is unavoidable. I bought Doug's tighter tolerence LT1021-based Vref10 instead as a transfer standard and just built a few extras on perfboard matched to the reference and leave em all running for drift comparison. I can bodge some other solution for frequency and resistance calibration if needed. |
| SilverSolder:
--- Quote from: iteratee on August 15, 2020, 09:14:03 pm --- --- Quote from: ercapoccia on August 15, 2020, 09:56:55 am ---How many of you have a DMMCheck Plus or equivalent? I have some cheap reference LCR and Voltage from china a couple of vishay 0,005% resistors and the lm399ah 10v reference from circuitvalley --- End quote --- I had a look at it but don't feel the need for a calibration multitool. The voltage standard is key because that's where drift is unavoidable. I bought Doug's tighter tolerence LT1021-based Vref10 instead as a transfer standard and just built a few extras on perfboard matched to the reference and leave em all running for drift comparison. I can bodge some other solution for frequency and resistance calibration if needed. --- End quote --- I have the Doug Malone Vref10 as well, used as a transfer standard to a number of local references. An excellent and economical solution for maintaining confidence in your DMMs. |
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