What is the best way to attach a hall effect sensor in a TO-92 package
to 22 gauge solid wire? I've tried just laying the wire next to the
to-92 lead and soldering them together, but I don't get much of a
mechanical connection doing that. Is there some type of sleeve I
should be using prior to the soldering?

Also, any suggestion on encapulating the device once the electrical
connections are made?