function(s, e) {

var db = new DevExpress.data.ODataContext(


                {
                    url: 'http://myservice.com/DataService.svc/',
                    entities: {
                        LevelTable: {
                            key: ["a_TankLevel1", "a_TankLevel2", "DeviceID"],
                            keyType: {
                                a_TankLevel1: "Int32",
                                a_TankLevel2: "Int32",
                                DeviceID: "Int32"

                            }
                        }
                    }
                }


                );


        var chartSeries = [{ argumentField: 'readTime', valueField: 'a_TankLevel1', name: 'Tank 1 Level' }, { argumentField: 'readTime', valueField: 'a_TankLevel2', name: 'Tank 2 Level' }];


            $(function () {
                $('#chartContainer').dxChart({
                   dataSource: {
                  store: db.LevelTable,
                 filter: ["DeviceID", "=", 325283298]
                 },
                    series: chartSeries,
                    title:{'text':'Tank 1 and Tank 2 Fill '},
                     tooltip:{'enabled':true}

                });

}