Correct scaling on graphs and dials

I am interfacing prtg with grafana however th eoutput scaling i not correct.
For example a counter to display volts on a battery should be 109.1v however its shows at 1.091kv even though i have selected volts as the scale.
Same for temperature this shows at 300Deg C rather than 30Deg C.
I cannot locate anywhere to divide out OR set the scaling to what i need.

All help appreciated.