DL analog range and resolution

[ECOELEC]

Hello,

The 12 bits analogue inputs of the DL2 are 12V range and protected till 24V.
I've seen that the DLMK3 analogue inputs have an input range of 24V.

Does it mean that the resolution of the DL2 is 2,93mV (12/2^12) and the DL1 is only 5,8mV (24/2^12)? It's not clear in the tech_specs of the DL1.

Instead of 24V range, it should be great to have signed input voltage range in future inputs (like -12V +12V). Almost sensors have an signed output (current transmitter, pot powered with -12+12V,...).
The configuration of the analogue range could them be 0-12V, -12 +12V, 2-10V, ...

Regards

Ecoelec

[Support]

We don't see much demand for signals with a negative voltage input on vehicle data loggers, which is why we don't offer it on our standard data loggers. The resolution is actually higher than what you suggest because the input values are oversampled and averaged.

Martin

[ECOELEC]

Thank you for this response.

Is the range of the DL1MK3 is 24V or 12V and protected till 24V (as the DL2)? The max analogue value is 65535 (instead of 4096); does it mean that you oversample and mean with 16 bits resolution from an 12bits ADC?

The +-12V range is interesting if electric car with current transducer when regenerative braking append. Almost current transducer (ex: LEM) in close loop have a +- output.
It's also a godd idea for steering wheel senso with a zero volt at the centre (and a +12 -12V pot powering).

Ecoelec

[Support]

The internal resolution on the stored data is 1mV, we get somewhere close to this on the resolution, but not obviously on the accuracy.

Martin