The flow sensor can be used without gauge but you will not be able to scale it to match your flow range. On the DDS3 gauge, there is a potentiometer marked "SC" snese calibration where the user can extend or reduce the output voltage.

We added feature so that the sensor can operation over a very wide range. It can be user calibrated between 60-200ml/min to 60-1200ml/min without any loss of resolution, still retaining the full 0-5V output.

Most flow sensor just give you voltage pulses per litre, you have to convert the pulses to suit your system. On request, We can make available an extra wire to give you a pulse output as well as the 0-5V output.

The "pulse output" is the re-conditioned raw signal from the flow sensor, not scaled.

 

awesome info. i was looking to not use the gauge cause i don't want to go with an a pillar pod or glove box plate and i don't have much room for anymore. eh. i'll figure something out.

so the dds3 setup. that has a 0-5 volt output. does it have an input? i had steve at smc convert my controller to be able to work off a 0-5 volt output on my xede. so i'm not sure how i would set this up. do you need to use the dds3's 0-5v output? thanks