My sensor readings are not accurate - how can I check?

To troubleshoot potential issues with sensor readings:

First - have a look at the tank level graph - the web app / portal has the most detailed version of this. This graph tells a better picture of what the tank level is doing, and if there any potential reading issues. 

Next - physically measure the water height (with a stick etc.) and compare this to the height in metres that the app is reporting. This is a good guage of any major errors with reading. If the two reading heights do not align, check that the sensor height has been set correctly in the app (tank settings).

For multiple, connected tanks:

The levels of your tanks may not be the same! These can be plumbed and connected in several dirrefent ways. With in-ground tanks it can be hard to understand how they are connected. Some common scenarios include:

1. Tanks connected near the base - these tanks should self-balance and keep a common level.
2. Tanks connected by an overflow pipe - these will not self-balance, and may have different levels at any point in time. If they have a common draw pipe, the higher tank will typically drain first.
3. Shut off / isolation valves on individual tanks.

For R3 (radar) sensors: 

1. Make sure that there is no misalignment with the hole and the sensor gasket. For thicker concrete tanks, widening the hole slightly (min 32mm) may help with reading errors.
2. Make sure there are no obstructions between the sensor and the water surface (pipes etc.)