Author Topic: custom sensor curve- VDO sensor for trans oil temp  (Read 7186 times)

Offline nmerrill

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custom sensor curve- VDO sensor for trans oil temp
« on: July 17, 2019, 10:27:54 pm »
I'm trying to input trans oil temp to VEMS using a VDO 323 058 sensor.  I have the calibration curve.
It seems like the "custom sensor curve" ohm/volt values are fixed.
This sensor looks like this:
temp F  Ohms
120   322.8
160   135
180   105.7
200   76
220   57
240   42
260   31
280   23
300   18.6

How do I edit the custom sensor curve values to fit?
Thanks


Offline nmerrill

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Re: custom sensor curve- VDO sensor for trans oil temp
« Reply #1 on: July 19, 2019, 05:36:01 pm »
Am I correct that the analog input calibration wizard only works for liner response sensors?

Offline nmerrill

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Re: custom sensor curve- VDO sensor for trans oil temp
« Reply #2 on: July 26, 2019, 07:20:05 am »
I've seen references to files that can be uploaded to vemstune - is this where I need to focus?

Offline Kamuto

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Re: custom sensor curve- VDO sensor for trans oil temp
« Reply #3 on: July 26, 2019, 09:17:00 pm »
I'm trying to input trans oil temp to VEMS using a VDO 323 058 sensor.  I have the calibration curve.
It seems like the "custom sensor curve" ohm/volt values are fixed.
This sensor looks like this:
temp F  Ohms
120   322.8
160   135
180   105.7
200   76
220   57
240   42
260   31
280   23
300   18.6

How do I edit the custom sensor curve values to fit?
Thanks

ohms of the sensor means nothing, it all depends in the input pullup :) if you want properly calibrate sensor, put it in water, put thermometer there raise water temp and adjust readings accordingly..
Vems installer in Lithuania
valdas.sunokas@gmail.com

Offline nmerrill

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Re: custom sensor curve- VDO sensor for trans oil temp
« Reply #4 on: July 27, 2019, 11:05:41 pm »
Ok, I can test the sensor, sure.  How many points are good?
But, the main issue is - can the values in the custom sensor table be altered?

Offline Kamuto

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Re: custom sensor curve- VDO sensor for trans oil temp
« Reply #5 on: July 29, 2019, 10:51:06 pm »
Ok, I can test the sensor, sure.  How many points are good?
But, the main issue is - can the values in the custom sensor table be altered?
yes, you have to change temp values there :))) and it's in celsius :) not bullshit F :)
Vems installer in Lithuania
valdas.sunokas@gmail.com