Tank 140 Sensor Input Issue

DIY
, , ,
1

I have a Tank 140 connected to the Cerbo GX with 2 tank sensors:

  1. 0-5V voltage sensor plugged into channel 1 (measures a LPG tank)
  2. 4-20ma current sensor plugged into Channel 3 (measures a fuel tank)

Channel 1 and 2 use external 24VDC from the external power input connected a USB port on the Cerbo
Channel 3 and 4 use internal 24VDC from the USB connection to the Cerbo

The 0-5V voltage sensor works perfectly when plugged into the Channel 1 or 2, but reads 0 when I connect it to Channel 4. The setup is the same for all channels.

Is there something I am missing? I need to free up a USB port on the Cerbo GX to plug in a BT dongle since the internal BT option is no longer showing.

2

Use a USB splitter cable if necessary for the Bluetoothdongle and Tank 140 data connection, the Bluetooth dongle will not use much power. You could also use a powered USB hub. Whilst I have a Tank 140 I have not used the power supply from the Tank 140 so do not know what could be wrong other than perhaps wrong supply voltage/too high current draw/not setting it to voltage sensor properly.

3

Thanks for the BT suggestions, but I really am baffled why the sensor does not work in Channel 3 or 4 but does in Channel 1 with the exact same settings.