Timeline for How does 3-wire RTD or resistance measurement works in bridge of wheatstone?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| May 11, 2018 at 4:52 | comment | added | Henry Crun | This works much better for strain gauges, where full scale might only be 1%. However, unfortunately, a single ended strain gauge would be a bit of a nightmare, as it is still a nickel RTD, with perhaps 0.4%/degC tempco i.e. it would be a better temperature sensor than strain sensor. | |
| May 10, 2018 at 21:27 | comment | added | Kono | electronics.stackexchange.com/questions/373627/… | |
| May 10, 2018 at 21:27 | comment | added | Kono | Does this principle also count for this issue with strain gauges? | |
| May 10, 2018 at 21:23 | comment | added | Spehro 'speff' Pefhany | As I said, it's not much used. If you pick numbers like 0-100 degrees C (balanced at 0'C) and 1 ohm line resistance it reduces the error by more than 10:1 so it's better than nothing. | |
| May 10, 2018 at 21:17 | comment | added | Kono | So Rg/R3 is not same as Rg+RL/R3+RL? (only if all resistances are the same). Why is this circuit used? | |
| May 10, 2018 at 21:12 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 4.0 |