Sorry but as designed NO
It relies on weight of a freely mounted tank. Since the tanks on your trailer are held down that would not allow it to work.
The older Airstream tanks have a built in system that shows up on the monitor panel. If yours does not consider changing tanks and adapting that to work.
If you need the remote readout while the trailer is parked you could release the hold down on the tanks and place the scale under them and that would work. but you would have to remove the scales and tighten down the hold downs before moving the trailer.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles