The gas filling level measurement devices from Truma determine the level in your gas cylinders, using ultrasound.
Filter
If you own a Truma gas system comprising gas pressure regulator, gas filter and high-pressure hoses with hose rupture protection, you can register at www.truma.com/regulatorwarranty now.
If you make a warranty claim, the defective component will be replaced provided it is not over five years old.
The requirement for the warranty is that all three components are installed and operated together and properly maintained.
The detailed warranty conditions can be found on the above-mentioned website. 
