| Products > Test Equipment |
| DMMCheck Plus Multimeter Reference(and other References) - Experiences.. |
| << < (9/38) > >> |
| Fungus:
--- Quote from: tomud on July 05, 2023, 09:15:18 pm ---... the multimeter did not require calibration (saving calibration data in the eeprom memory). --- End quote --- Around here that would be called "adjustment". "Calibration" - measuring reference values and producing a report. "Adjustment" - modifying the device to improve the accuracy of the displayed values. --- Quote from: rsjsouza on July 06, 2023, 11:03:10 am ---My experience reflects tomud's as well; the various cheaper multimeters are indeed quite accurate but only until the point of wearing their mechanical components (jacks and mainly rotary switch). --- End quote --- I've only had one meter go bad (via the rotary switch) and it was obviously bad, ie. It didn't display sensible values. If you're going to be dropping it from ladders on a regular basis then it obviously makes sense to buy a decent meter and the cost probably won't matter - you're being paid to be up that ladder. If you're working with dangerous voltages then "trust the meter" isn't enough. You should own a proving unit (and use it). https://www.fluke.com/en/product/electrical-testing/basic-testers/prv240-proving-unit I assume all the meter nannies around here do that, right? If you're not throwing it off rooftops and/or working in arc flash environments then how much is this is relevant? A meter that doesn't work will be found out in minutes. Just bin it and grab one of the others. (and as noted, this is very infrequent in my own anecdotes) |
| Svgeesus:
Oh and also to mention excellent customer service. --- Quote ---Chris, I forgot to mention that I updated the firmware in your DMMCheck Plus microcontroller. You can now switch between the two frequencies by toggling the AC/DC switch from AC to DC and back to AC- you no longer have to cycle the power to the unit to get the second frequency. Regards, Doug --- End quote --- |
| Veteran68:
--- Quote from: KungFuJosh on July 03, 2023, 03:25:54 pm --- --- Quote from: Fungus on July 03, 2023, 08:08:34 am --- --- Quote from: Martin72 on July 02, 2023, 10:45:12 pm ---Before I hit the buy button, what are your thoughts ? --- End quote --- Have you seen these? https://www.aliexpress.com/item/1005002190676191.html https://www.aliexpress.com/item/1005004219629979.html https://www.aliexpress.com/item/1005004221641169.html (random examples) --- End quote --- Those random examples are all trash. I bought them (thankfully they're inexpensive trash 😉). Most of them don't come with any reference values written. NONE of them come with any form of certification for the values written. The one unit I received that had values written, was mostly bs. I think 3 out of all the written numbers were accurate (checked across multiple meters with higher digit counts than the reference numbers). The only value for any devices like these are if you know they're measured/calibrated from a reliable source. --- End quote --- I have a few different varieties of these for both voltage and LCR references, including the one that takes the weird 10F2015 15V battery, and they all came with written values which checked out according to my Agilent 34401A. Most if not all came from Amazon but don't know that that makes them any more "legitimate" than an AliExpress seller. |
| KungFuJosh:
--- Quote from: Veteran68 on July 07, 2023, 12:32:57 am ---I have a few different varieties of these for both voltage and LCR references, including the one that takes the weird 10F2015 15V battery, and they all came with written values which checked out according to my Agilent 34401A. Most if not all came from Amazon but don't know that that makes them any more "legitimate" than an AliExpress seller. --- End quote --- I think it's a roll of the device depending on who you get them from. I tried a voltage ref from Amazon, and it was pretty darn close to the marked value (like within .0001)...but also died the second time I tried turning it on. |
| all_repair:
--- Quote from: Veteran68 on July 07, 2023, 12:32:57 am --- --- Quote from: KungFuJosh on July 03, 2023, 03:25:54 pm --- --- Quote from: Fungus on July 03, 2023, 08:08:34 am --- --- Quote from: Martin72 on July 02, 2023, 10:45:12 pm ---Before I hit the buy button, what are your thoughts ? --- End quote --- Have you seen these? https://www.aliexpress.com/item/1005002190676191.html https://www.aliexpress.com/item/1005004219629979.html https://www.aliexpress.com/item/1005004221641169.html (random examples) --- End quote --- Those random examples are all trash. I bought them (thankfully they're inexpensive trash 😉). Most of them don't come with any reference values written. NONE of them come with any form of certification for the values written. The one unit I received that had values written, was mostly bs. I think 3 out of all the written numbers were accurate (checked across multiple meters with higher digit counts than the reference numbers). The only value for any devices like these are if you know they're measured/calibrated from a reliable source. --- End quote --- I have a few different varieties of these for both voltage and LCR references, including the one that takes the weird 10F2015 15V battery, and they all came with written values which checked out according to my Agilent 34401A. Most if not all came from Amazon but don't know that that makes them any more "legitimate" than an AliExpress seller. --- End quote --- All of mine were as good as they were specified. These are not something that low-ball sellers are interested. Firstly volume is not high, and secondly buyers are of a higher level that the sub-standard goods can get away easily. |
| Navigation |
| Message Index |
| Next page |
| Previous page |