They are not exactly apples to apples. They are a little different at rest (30 ohm to 33ohm) but the bigger issues is the B values are different. The B values define the temperature profile curve and how they react over the range (as defined by the Steinhart-hart equation). You would have to see how much different this results in from the 300B value difference. So if you have a tolerance band then it may be feasible.
They are not exactly apples to apples. They are a little different at rest (30 ohm to 33ohm) but the bigger issues is the B values are different. The B values define the temperature profile curve and how they react over the range (as defined by the Steinhart-hart equation). You would have to see how much different this results in from the 300B value difference. So if you have a tolerance band then it may be feasible.
Yes there are differences. The existing part has 30 Ohms with a tolerance of 10% and Beta value of 3000 with 10% tolerance. And the new part has a Beta value of 2900 with 3% tolerance and resistance of 33 Ohms with 10% tolerance.
Do you care how much error there is?
Have you tried to calculate Sensitivity Analysis? ( partial derivative of equation)
Then determine max error due to difference in R25 and B over your specified operating temperature range?
Then see what other changes are needed with fixed resistors are necessary?
The B value defenitions of both the parts seems to be different. One defines it as R25/R50 and the other as R25/R100. So i think the difference is more than 300B.
The B value defenitions of both the parts seems to be different. One defines it as R25/R50 and the other as R25/R100. So i think the difference is more than 300B.
Yea I skimmed and didn't put the right number but the point being that it is different so based on the tolerance for measurement, you would not have an equivalent system.