Potato Soup with Sausage

1 lbs pork sausage links, cut into 1/4 inch slices
1 cup sliced celery
1/2 cup chopped onion
1/2 tsp dried thyme
1/2 tsp salt
2 Tbsp all-purpose flour
1 can (14.5 oz) chicken broth
1/2 cup water
4 medium potatoes, peeled and diced (about 4 cups)
1 cup milk
1 cup sliced green beans, partially cooked
Chopped fresh parsley

In a heavy skillet, brown sausage over medium heat.  Remove sausage and set aside.  Drain all but 1 Tbsp drippings; saute celery, onion, thyme and salt until onion is tender.  Stir in flour; cook 1 minute.  Gradually add broth and water, stirring until the mixture comes to a boil.  Add potatoes; cover and simmer 25 minutes or until potatoes are tender.  Allow soup to cool.  Puree 2 cups in blender or food processor; return to kettle.  Add milk, beans, and sausage; heat through.  Garnish with parsley.