Sensor calibration

Questions about the Elite Series ECU's? Ask here.
azfiveoh
Posts: 16
Joined: Thu Jun 29, 2017 1:15 pm

Sensor calibration

Postby azfiveoh » Wed Jan 02, 2019 12:30 pm

I am using an aftermarket air temp sensor and have calibration data for the following:
Temp vs Volts @ 2,200 Ohms
Temp vs Volts @ 2,490 Ohms

Which calibration data set should be used for the Elite 2500?

Thanks.

YubaRoll
Posts: 1
Joined: Wed Mar 10, 2021 1:09 pm

Re: Sensor calibration

Postby YubaRoll » Wed Mar 10, 2021 1:41 pm

I'm posting because this is pretty much the only thread that comes up when you're digging for info on Google.

AEM publishes info for their sensors in a format that lists temp/volts at 2200 ohms / 2490 ohms. In my case I am using an AEM 30-2013 temperature sensor. The data sheet is here:
https://www.aemelectronics.com/sites/de ... %20Kit.pdf

To get the proper values for an Elite 1500 or Elite 2500 you can use this formula:
Voltage out = (Resistance 1 / (Resistance 1 + Resistance 2)) * Voltage In

Filling in the variables above, enable the 5v pull up in the sensor config, which is 1k / 1000 ohms.
Vout = (Sensor Resistance / (Sensor Resistance + 1000)) * 5

In short, here is a table for the AEM 30-2013 air temperature sensor with the 5v pull-up enabled in Haltech:
Temp in C -> Voltage
-20 -> 4.83
-10 -> 4.70
0 -> 4.52
10 -> 4.24
20 -> 3.88
30 -> 3.45
40 -> 2.97
50 -> 2.48
60 -> 2.01
70 -> 1.59
80 -> 1.25
90 -> 0.96
100 -> 0.74
110 -> 0.57
120 -> 0.44
130 -> 0.34
140 -> 0.27
150 -> 0.21


Return to “Elite Series”

Who is online

Users browsing this forum: No registered users and 3 guests