If you have a ohm meter, its easy to test. Get a can or container slightly larger in diameter and deep enough to bury the canister.
Connect your ohm meter across the leads to the sender.
Pour some gas into your container with the canister in it. Watch the resistance change. If so, it works. You can lift the canister up and down out of the gas to test it. Somewhere I have the actual resistance values you can expect, bu if you see change you should be OK. I seem to recall 80 or 90 ohms, but I can't guarantee that.