precision duel temp probe for powerlogger or freestaning

[earlbrown]

These were actually supposed to go on my roof mounted solar hot top/house heater (that you can see from space ) until I realized they are perfect for data logging on my GN.

Self conatined harness with an easy 4 wire hookup. If using a powerlogger all four wires go to the aux block. (+, -, temp1, temp2)

If using it freestanding, it's hot, ground, and whatever voltage display you want. If it's a racecar this harness can be powered with a 9 volt battery for months.

It's reads to .1* accurate to +/-1*. in either (F)ahrenheit or (C)anadian. I'll send you the .ini mods to get get them to read like in the powerlogger screengrab below.


This harness can allow you to do groovy stuff like this...

$50 shipped

 

[TurboBob]

more tech info please. How do the probes attach to what you are sensing? output scaling? voltage requirements? response time?


B

 

[earlbrown]

They can be thermally coupled any way you want. The way I have mine set up right now is to zip tie the sensor tip to the line I'm probing then cover it with the foam insulation to keep ambient elements from messing the reading. I did it with and without heatsink compound and it didn't seem to matter either way. My install isn't a permanent install as I wanted to know what my trans and oil temps were first as a baseline. It will only take a few minutes to move to in/out with my trans cooler, oil cooler, intercooler, etc... If I was to do a permanent installation I'd use a drop of heatsink compound and do a more solid thermal coupling.

I was inspired to put these up after reading all the ''Do I really need an oil cooler'' threads when no one knew what their actual oil temps were. (and months later I finally took a picture and listed them ) Plus these things are just neat as hell. I have them all over my house monitoring and controlling stuff!

The tips are very low mass so they respond fairly quickly. Much faster than oil or trans temps can fluctuate. The voltage requirements are anywhere between 5 to 30 volts DC, the draw is rated at 75uA so double that for 2 probes running at once. There no scaling needed, the sensors are calibrated at the factory. I just figured out how to change the .ini file to make the graph read the range I wanted and give it a voltage for both high and low. Once I figured out the nomenclature, it was a piece of cake.


I think that answered all your questions. You know more about electronics than I'll ever know. I'm just a hack! lol

 

[earlbrown]

TTT