ThermistorCalibration
From John Clarke Mills Project Wiki
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- | + | The temperature sensors were ordered from my local independent BMW parts dealer. OEM part number 62110788115. They are just the simple one wire-hookup type, the housing is the ground. They were very easy to calibrate actually. A lot easier than I thought. Just get yourself a known working thermometer and freeze and boil some water measuring the Ohm's at 3 three known intervals. Here are my results: | |
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I then plugged them into my MegaSquirt and they all checked out. That simple. | I then plugged them into my MegaSquirt and they all checked out. That simple. | ||
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+ | [[Image: Thermistor calibaration.JPG]] |
Current revision
The temperature sensors were ordered from my local independent BMW parts dealer. OEM part number 62110788115. They are just the simple one wire-hookup type, the housing is the ground. They were very easy to calibrate actually. A lot easier than I thought. Just get yourself a known working thermometer and freeze and boil some water measuring the Ohm's at 3 three known intervals. Here are my results:
F | Ohms |
44 | 1.300 |
80 | 0.568 |
185 | 0.73 |
I then plugged them into my MegaSquirt and they all checked out. That simple.