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Oil pressure in psi, water temp sensor with single wire

Posted: Sat Apr 10, 2021 3:14 pm
by Big_jimmyb
Hi guys, is there any way to change the oil pressure to psi read out rather than bar?

Also I have a standard classic mini water temp sensor, single cable resisting to negative. I know I need a pull up resistor of approx 1k ohms but how do I tell the dash the resistance and get the readings correctly.

James

Re: Oil pressure in psi, water temp sensor with single wire

Posted: Sun Apr 11, 2021 7:59 pm
by peterguk
Both questions easily answered. Take a look here:

https://www.race-technology.com/wiki/in ... yOwnSensor

Re: Oil pressure in psi, water temp sensor with single wire

Posted: Tue Apr 27, 2021 3:30 pm
by Big_jimmyb
Thanks but that answers neither question for the Dash 2 Pro. It is for the data logger.

Re: Oil pressure in psi, water temp sensor with single wire

Posted: Fri Apr 30, 2021 5:59 pm
by peterguk
Which display do you have?

Re: Oil pressure in psi, water temp sensor with single wire

Posted: Tue May 04, 2021 8:32 pm
by Big_jimmyb
I am using a dash 2 pro

Re: Oil pressure in psi, water temp sensor with single wire

Posted: Thu Mar 24, 2022 10:56 am
by DIGGIDY
I think this thread from another forum will help you understand it better, you have to create a calibration map for the sensor readings at various temperatures recoding the ohms, you can then translate that along with you reference voltage and pull-up into the correct voltage values using the volts to resistance xls form in the second post.

https://www.motec.com.au/forum/viewtopic.php?f=11&t=92