Index: DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/ConversionHelperTests.cs
===================================================================
diff -u -r1589 -r1611
--- DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/ConversionHelperTests.cs	(.../ConversionHelperTests.cs)	(revision 1589)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/ConversionHelperTests.cs	(.../ConversionHelperTests.cs)	(revision 1611)
@@ -643,5 +643,22 @@
             Assert.AreEqual(inputTimeStepUnit, ConversionHelper.ConvertToInputTimeStepUnit(timeStepUnit));
         }
 
+        [TestCase(ConversionHelper.PlLineTypePl1, PlLineType.Pl1)]
+        [TestCase(ConversionHelper.PlLineTypePl2, PlLineType.Pl2)]
+        [TestCase(ConversionHelper.PlLineTypePl3, PlLineType.Pl3)]
+        [TestCase(ConversionHelper.PlLineTypePl4, PlLineType.Pl4)]
+        public void CanConvertToPlLineType(uint inputPlLineType, PlLineType plLineType)
+        {
+            Assert.AreEqual(plLineType, ConversionHelper.ConvertToPlLineType(inputPlLineType));
+        }
+
+        [TestCase(PlLineType.Pl1, ConversionHelper.PlLineTypePl1)]
+        [TestCase(PlLineType.Pl2, ConversionHelper.PlLineTypePl2)]
+        [TestCase(PlLineType.Pl3, ConversionHelper.PlLineTypePl3)]
+        [TestCase(PlLineType.Pl4, ConversionHelper.PlLineTypePl4)]
+        public void CanConvertToInputPlLineType(PlLineType plLineType, uint inputPlLineType)
+        {
+            Assert.AreEqual(inputPlLineType, ConversionHelper.ConvertToInputPlLineType(plLineType));
+        }
     }
 }
Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/ConversionHelper.cs
===================================================================
diff -u -r1589 -r1611
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/ConversionHelper.cs	(.../ConversionHelper.cs)	(revision 1589)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/ConversionHelper.cs	(.../ConversionHelper.cs)	(revision 1611)
@@ -1182,5 +1182,46 @@
             };
             return translationTable[timeStepUnit];
         }
+        /// <summary>
+        /// Constants for translating to Enums TimeStepUnit
+        /// </summary>
+        public const uint PlLineTypePl1 = 1;
+        public const uint PlLineTypePl2 = 2;
+        public const uint PlLineTypePl3 = 3;
+        public const uint PlLineTypePl4 = 4;
+
+        /// <summary>
+        /// Converts the input plLineType to Dam plLineType.
+        /// </summary>
+        /// <param name="plLineType">Type of the pl line.</param>
+        /// <returns>plLineType</returns>
+        public static PlLineType ConvertToPlLineType(uint plLineType)
+        {
+            var translationTable = new Dictionary<uint, PlLineType>()
+            {
+                {PlLineTypePl1, PlLineType.Pl1},
+                {PlLineTypePl2, PlLineType.Pl2},
+                {PlLineTypePl3, PlLineType.Pl3},
+                {PlLineTypePl4, PlLineType.Pl4}
+            };
+            return translationTable[plLineType];
+        }
+
+        /// <summary>
+        /// Converts the Dam plLineType to input plLineType.
+        /// </summary>
+        /// <param name="plLineType">Type of the pl line.</param>
+        /// <returns>plLineType as integer</returns>
+        public static uint ConvertToInputPlLineType(PlLineType plLineType)
+        {
+            var translationTable = new Dictionary<PlLineType, uint>()
+            {
+                {PlLineType.Pl1, PlLineTypePl1},
+                {PlLineType.Pl2, PlLineTypePl2},
+                {PlLineType.Pl3, PlLineTypePl3},
+                {PlLineType.Pl4, PlLineTypePl4}
+            };
+            return translationTable[plLineType];
+        }
     }
 }
\ No newline at end of file
Index: DamEngine/trunk/xsd/DamSensor.xsd
===================================================================
diff -u -r1600 -r1611
--- DamEngine/trunk/xsd/DamSensor.xsd	(.../DamSensor.xsd)	(revision 1600)
+++ DamEngine/trunk/xsd/DamSensor.xsd	(.../DamSensor.xsd)	(revision 1611)
@@ -35,15 +35,5 @@
         </xs:restriction>
       </xs:simpleType>
     </xs:attribute>
-    <xs:attribute name="PlLineType">
-      <xs:simpleType>
-        <xs:restriction base="xs:int">
-          <xs:enumeration value="Pl1" />
-          <xs:enumeration value="Pl2" />
-          <xs:enumeration value="Pl3" />
-          <xs:enumeration value="Pl4" />
-        </xs:restriction>
-      </xs:simpleType>
-    </xs:attribute>
   </xs:complexType>
 </xs:schema>
\ No newline at end of file