Update calorimeter.json

datasheets/calorimeter.json

@@ -17,14 +17,14 @@
 		"medium": {
 			"type": "water",
 			"mass": {
-				"value": XXXXX,
+				"value": 0,
 				"unit": "gramm",
 				"accuracy": {
-					"value": XXXXX,
+					"value": 0,
 					"type": "absolute",
 					"unit": "gramm"
 				}
 			}
 		}
 	}
-}
\ No newline at end of file
+}