Hi, I am using a lm 35 temperature sensor which is powered by a pc through matlab via a data acquisition card. I am measuring the temperature of a bulb. The problem I am having is its picking up a lot of noise from ambient temperature until around 47/48 degrees and then it stabilizes out.
Hi guys, thanks for the comments. The card I am using is a National Instruments TBX 68 data acquisition card. The sensor is powered from pin8 (5volts) and the return is back on pin 68 and the ground is pin 67.
Yes, but you can still make design and assembly errors with those, too. The LM35 is the easiest one so, if you are having troubles, I would recommend you share your secret schematic so we can help you walk before you try to run.
The LM35 is by no means calibrated. The military spec version has a lower tolerance though.
Who said it was a tulip. The OP said bulb. It could have been a Snowdrop. I like them. E
Hi, I am using a lm 35 temperature sensor which is powered by a pc through matlab via a data acquisition card. I am measuring the temperature of a bulb. The problem I am having is its picking up a lot of noise from ambient temperature until around 47/48 degrees and then it stabilizes out.
If the sensor is getting noise from ambient temperature sources, then the problem is more likely how the sensor is thermally coupled to the bulb, rather than some electrical issue.