| ??? 06/11/05 06:32 Read: times |
#94663 - calculating resistance Responding to: ???'s previous message |
hi guys i have been playing around with designing and testing for my pt100 thermometer. I found out what the accuracy of the resistance,current and voltage range on my multimeter was so i could try to keep good accuracy. Then try to calculate the resistance of the pt100 sensor. So i can see what the temperature is and what the resistance should be for the given temperature. My setup is basicly the pt100 sensor hooked up to a current source then to measure the voltage directly over the sensor. Then to workout the resistance. But my problem is that the current and voltage measurements i need to measure to calculate the resistance. they are only to 1 decimal place but i need to be able to calculate the resistance to 2 decimal places. can anyone give me a clue on how i can get around this |
| Topic | Author | Date |
| making a pt100 thermometer using a 8051 | 01/01/70 00:00 | |
| you are usually better off | 01/01/70 00:00 | |
| current sources | 01/01/70 00:00 | |
| TI (Burr-Brown) App Note SBAA050 | 01/01/70 00:00 | |
| That's great | 01/01/70 00:00 | |
| ads574 | 01/01/70 00:00 | |
| Indeed a very good link! | 01/01/70 00:00 | |
| calculating resistance | 01/01/70 00:00 | |
| Where are the problems, concretely? | 01/01/70 00:00 | |
| measuring resistance | 01/01/70 00:00 | |
| Use better mulitmeter... | 01/01/70 00:00 | |
| 2 multimeters | 01/01/70 00:00 | |
| max1410 | 01/01/70 00:00 | |
| Theoretical curve | 01/01/70 00:00 | |
| PT100 | 01/01/70 00:00 | |
| pt100s | 01/01/70 00:00 | |
| Look at LT1001data sheet | 01/01/70 00:00 | |
| wheatstone bridge | 01/01/70 00:00 | |
| Look at it this way..... | 01/01/70 00:00 | |
| anyone knows | 01/01/70 00:00 | |
| Keep it simple... | 01/01/70 00:00 | |
| So does Maxim | 01/01/70 00:00 | |
Already done... | 01/01/70 00:00 |