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Sensor Configuration in Syvecs

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Newb question probably...

I have a 150C oil temperature sensor bought from Haltech that I can't configure correctly in Syvecs software. Its connected to one of the unipolar inputs.

It gets Voltage Limit and Voltage Failure errors reported.

The sensor calibration that came with it has a range of 3V -30C to 4.1V 150C.

The entries currently in the software are as follows:

Input Configuration: 5V

Default Volt High: 4.9V

Default Volt Low 0.5V

Deafault Sensor Reading: 80C

Filter 90%

Linearisation is set according to the calibration, -30 at 3V and below and 150 at 4.1 V and above, interpolated between.

What am I doing wrong?

Input config needs to be set to thermistor to enable the pull-up.

Thanks Adam, I changed the Input Config to Thermistor but still get the same errors. Maybe I have incorrectly entered the calibration in Linearisation. totally new to Syvecs software.Attached is what the linearisation screen looks like. I don't know why the reference points (the white crosses) from the previous calibration that was in there are still showing now that I have changed it, or whether that is significant.

Attached Files

Was that screenshot done when connected? Your input is showing 0V. So that is the main problem. Either the sensor is shorted to ground or the pull-up is not on. (I dont know if all inputs have pull-ups in the S7).

The white crosses are linearisation "hints", they wont effect it but you can remove them by going to >linearisation>remove all points. These are normally how you build the calibration curve - effectively tell it to "join the dots", rather than manually typing in the whole table.

Be aware also the calibration is probably wrong - its not causing your problem at the moment but Syvecs use an odd 3Kohm pull-up which is probably different to Haltech.

Thanks Adam. Will look at those issues.