Hey, just chasing some info on setting up a 300A smartshunt as a DC energy meter.
Some background. I am currently setting up a system in a vehicle that will be utilising a cerbo gx to monitor various data points. I have been working with this company to update their vehicle setups to increase efficiency and reliability. They utilise a 12V compressor as one of the main pieces of equipment with a starlink unit as well making up the bulk of their consumption. Recently we have been working with mounting the new ARB brushless twin compressors in a milwaulkee packout box (they’re well vented with fans and cooling ducts) to modularise three vehicle set ups and allow for quick swap outs if/when something fails.
Recently there has been several compressors fail in different ways and the workers understand how to use the equipment but not the technical background behind how it works in order to offer valuable enough feedback to make any necessary changes.
So the plan is to use a cerbo gx to monitor various points like temperatures, air pressures, battery and supply voltage as well as current draw.
We will be using a 300A smartshunt as a dc energy meter. When looking through the manual it had the voltage supply/sense connecting directly back to the battery. As I want to measure and track the voltage of the compressor as accurately as possible, I want to take the voltage sense from the compressor itself to track and check for voltage drop.
Can I get away running the single voltage sense to the compressors positive terminal or do I have to run it to the battery still and then utilise the aux input at the compressor to track voltage?