| Products > Test Equipment |
| FLUKE 107 - absolute garbage lasted 2 years |
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| floobydust:
These small Flukes, they deleted the usual protection zener-connected transistors. So I don't expect them to be robust in certain situations. Not the same protection despite the familiar parts such as surge resistor, PTC, MOV's. TVS D1 is across the battery so the BAV199 CR1 might dump overvoltages there - still a terrible idea. |
| joeqsmith:
--- Quote from: floobydust on June 30, 2024, 04:20:56 am ---These small Flukes, they deleted the usual protection zener-connected transistors. So I don't expect them to be robust in certain situations. Not the same protection despite the familiar parts such as surge resistor, PTC, MOV's. TVS D1 is across the battery so the BAV199 CR1 might dump overvoltages there - still a terrible idea. --- End quote --- My Fluke 107 survived five positive and negative 14kV 100us full width half height transients through a 2 ohm source. Very few meters I have looked at would survive that level. While the 107 was eventually damaged at 15kV, I was able to repair it and it is still fully functional today. Sadly I can't say that about many of the meters I have looked at and they get recycled. It's not even a question of cost. I have a Fluke 101 that has yet to be damaged with all my testing and it cost less than $50. Consider I ran a Keysight U1282A that was closer to $800 which couldn't survive the same levels as my cheap Amprobe AM510. And with all the custom parts, it could not be repaired. |
| coppercone2:
lol I got it. Calibrating a 30% error with software is like if a dial gauge not reading right, so you take it apart and paint over the scale. I seen that before when its really underfunded. You get sharpie marks that indicate where the real value is. Then they assume its still linear. Then the employee training is like how to understand managers sharpie marks. Like a mark on the 5 psi mark that says 30. So you rescaled a reading of 5 psi to indicate 30 psi. Clearly does not need to be replaced. The magic of the look up table (just assume its still linear ;) ) |
| factory:
Was there any battery leakage from the previous set of batteries? David |
| christian.burger:
Yes, there was battery leakage and I've reconstructed the terminals. It's working fine other than the readings which are off, but also I don't think that is related to the problem, unless you know something specific about that. I agree that it's most likely toast, but would like to try and use the calibration terminals just to see what I can get before I throw it away. I could not find any reference to the WP9, WP8, WP7, WP6 calibration terminals anywhere. |
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