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VDO Sender Thermistor measurements

Posted: Wed Jan 02, 2008 1:38 am
by 58Ratt
I need them! for VDO part number 323 055d. Checked website and they don't give them. they just have 120*c = 37ohms as a midpoint.

http://vdo.carshopinc.com/product_info. ... 9/323-055D
http://www.germansupply.com/home/custom ... 436&page=1

I had found them when i did the initial swap to fuel injection but made the mistake of not writing them down. When i loaded the newest firmware it wiped em!

i am just guessing right now.

thanks,

chris

Posted: Wed Jan 02, 2008 7:00 am
by loren
I tested a VDO 0-250 degree sensor and got:

80 F = 273 ohms
120 F = 143 ohms
180 F = 45 ohms

FYI, 120C = 248F, that should be the high point, not the mid point... assuming it's a 250 degree sensor.

I'd expect that all VDO sensors of the same range should produce nearly the same outputs.

If you've got access to a kitchen thermometer, you can do the same test I did. Ambient, hot tap water, and boiling water cooled to whatever temp you want to use. I chose 180 because I wanted to have a calibrated point right at normal operating temp.

Posted: Wed Jan 02, 2008 10:07 am
by 58Ratt
sorry should of mentioned it was a 300* unit. 4-24v.

i found something close on their website but its still like 20* off.