Hey all,
I recently got an oxygen sensor kit for some engine tests. It has a knob that you can turn to calibrate the output. The knob is a simple potentiometer with only two terminals used (so I guess it's just a variable resistor or rheostat). Everything works fine, but my problem is that the bloody knob is too sensitive!
I barely turn it and the oxygen reading goes up by like 1+ percent. I have to fiddle with it for five minutes before I can get it to settle in on 20.9%.
Does anyone know how I can reduce the sensitivity of this potentiometer? I tried just adding some more resistance to the calibration circuit, but that just reduced the overall reading (which makes sense).
Will I need to get a different potentiometer? How can I tell what type I have now?
Thanks in advance. I'm very new to circuits, so any advice would be appreciated.
I recently got an oxygen sensor kit for some engine tests. It has a knob that you can turn to calibrate the output. The knob is a simple potentiometer with only two terminals used (so I guess it's just a variable resistor or rheostat). Everything works fine, but my problem is that the bloody knob is too sensitive!
I barely turn it and the oxygen reading goes up by like 1+ percent. I have to fiddle with it for five minutes before I can get it to settle in on 20.9%.
Does anyone know how I can reduce the sensitivity of this potentiometer? I tried just adding some more resistance to the calibration circuit, but that just reduced the overall reading (which makes sense).
Will I need to get a different potentiometer? How can I tell what type I have now?
Thanks in advance. I'm very new to circuits, so any advice would be appreciated.