| ??? 01/06/05 17:56 Read: times |
#84476 - Re Responding to: ???'s previous message |
Raghunathan said:
I have an application to read an rpm in the range of 0-6000 rpm with a resolution of 10 rpm and linearity of 0.1%. I would say, that it is very hard to get an accuracy better than 1% with any analog method. Also converting the result to voltage will cause further errors (thermo couple voltages, cable resistance, noise, ground loops and so on). The only solution can be a micro controller with a crystal as time base and no other R and C components, which decrease the accuracy dramatically. And also such accurate values must always be send as its digital representation, but never as an analog voltage. Peter |
| Topic | Author | Date |
| LM331 Vs MCU | 01/01/70 00:00 | |
| Accuracy ? | 01/01/70 00:00 | |
| Re | 01/01/70 00:00 | |
| Accuracy | 01/01/70 00:00 | |
| ReRe | 01/01/70 00:00 | |
| HUH ? | 01/01/70 00:00 | |
| V->F->V | 01/01/70 00:00 | |
| Pitfalls | 01/01/70 00:00 | |
| What I wanted - Rob Klein | 01/01/70 00:00 | |
| You're welcome Raghu :o) | 01/01/70 00:00 | |
| digital - analog -digital | 01/01/70 00:00 | |
| eagleeyes | 01/01/70 00:00 | |
| Re | 01/01/70 00:00 | |
| LM331 can well be used | 01/01/70 00:00 | |
Reassuring....Kai | 01/01/70 00:00 |