diff --git a/TestBenchFramework/BenchControl/Elde/StartMeasurementOp.cs b/TestBenchFramework/BenchControl/Elde/StartMeasurementOp.cs
index 284fed251..f303985e9 100644
--- a/TestBenchFramework/BenchControl/Elde/StartMeasurementOp.cs
+++ b/TestBenchFramework/BenchControl/Elde/StartMeasurementOp.cs
@@ -6,11 +6,11 @@ namespace TBF.BenchControl.Elde
 	public class StartMeasurementOp : IOperation
 	{
 		private static readonly ILog log = LogManager.GetLogger(typeof(StartMeasurementOp));
-		public override string ToString() { return string.Format("StartMeasurementOp(ref={0},pulses={1})", flowMeter.Idx1, refPulses); }
+        public override string ToString() { return string.Format("StartMeasurementOp(ref={0},pulses={1})", flowMeterIdx, refPulses); }
 
 		/// Set by the constructor
 		readonly ControlBoardDev controlBoard;
-        readonly Elde.FlowMeter.FlowMeter flowMeter;
+        readonly int flowMeterIdx;
         readonly int refPulses;                 /// Number of reference pulses for a complete test
         readonly TestMethods testMethod;
         readonly float filterConstant;
@@ -31,8 +31,18 @@ namespace TBF.BenchControl.Elde
 			if (controlBoardDev == null) throw new ArgumentNullException("controlBoardDev");
 			this.controlBoard = controlBoardDev;
 
-            this.flowMeter = flowMeter as Elde.FlowMeter.FlowMeter;
-            if (this.flowMeter == null) throw new ArgumentException("flowMeter is null or is not Elde");
+            if (flowMeter is Elde.FlowMeter.FlowMeter)
+            {
+                flowMeterIdx = (flowMeter as Elde.FlowMeter.FlowMeter).Idx1;
+            }
+            else if (flowMeter is Elde.FlowMeterCouple.FlowMeter)
+            {
+                flowMeterIdx = 0;
+            }
+            else
+            {
+                throw new ArgumentException("flowMeter is null or is not Elde");
+            }
 
             this.refPulses = refPulses;
             this.testMethod = method;
@@ -44,7 +54,7 @@ namespace TBF.BenchControl.Elde
 		/// <summary>Start this operation</summary>
 		public void Start()
         {
-            controlBoard.SendCommand(Command.Start, flowMeter.Idx1, controlBoard.RRoute, refPulses, testMethod,
+            controlBoard.SendCommand(Command.Start, flowMeterIdx, controlBoard.RRoute, refPulses, testMethod,
                                      filterConstant, 20, 0, StopDevs.None);
         }
 
diff --git a/TestBenchFramework/BenchControl/Sequences/SequenceBase.cs b/TestBenchFramework/BenchControl/Sequences/SequenceBase.cs
index 5235571ca..1cfe06117 100644
--- a/TestBenchFramework/BenchControl/Sequences/SequenceBase.cs
+++ b/TestBenchFramework/BenchControl/Sequences/SequenceBase.cs
@@ -609,7 +609,7 @@ namespace TBF.BenchControl.Sequences
             data.TestResult = tstRslt;
 
 			//float ltrPerRefPulse = outPath.FlowMeter.NominalFlow / 7200.0f;                   /// [ltr/pulse]
-            float refPulsesPerLtr = 7200.0f / outPath.FlowMeter.NominalFlow;                    /// [pulse/ltr]
+            float refPulsesPerLtr = 1.0f / outPath.FlowMeter.LtrPerPulse;                       /// [pulse/ltr]
 
             data.RefPulses = cBrd.EtPulses(0);
 
@@ -710,7 +710,7 @@ namespace TBF.BenchControl.Sequences
 			sb.Append(";"); sb.Append(tstRslt.Time);			/// t
 			sb.Append(";"); sb.Append(tstRslt.ErrorMaster);		/// Eelm   . . . chyba etalonu voci komercne pravej hodnote
             sb.Append(";"); sb.Append(" ");		                /// Emass  . . . chyba druheho etalonu voci komercne pravej hodnote (teraz vynechavame)
-			sb.Append(";"); sb.Append(7200.0f / outPath.FlowMeter.NominalFlow);
+			sb.Append(";"); sb.Append(1.0f / outPath.FlowMeter.LtrPerPulse);
 																/// Const.MID  . konstanta eatlonu
             sb.Append(";"); sb.Append(" ");		                /// Const.MA . . konstanta druheho etalonu
 			sb.Append(";"); sb.Append(tstRslt.TimeDivStart0);	/// Time Div Start celkovy cas v [ms]
diff --git a/TestBenchFramework/BenchControl/TestMethods/CombinedMeters/CombinedMetersSeq.cs b/TestBenchFramework/BenchControl/TestMethods/CombinedMeters/CombinedMetersSeq.cs
index f94fe7565..4f5ed90df 100644
--- a/TestBenchFramework/BenchControl/TestMethods/CombinedMeters/CombinedMetersSeq.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/CombinedMeters/CombinedMetersSeq.cs
@@ -36,11 +36,13 @@ namespace TBF.BenchControl.TestMethods.CombinedMeters
 			IList<Event> e;                 /// Events from currently running operations
 			Event retVal = Event.Done;
 
-			/// Notes:
-			///   float timeHr = volumeLtr / (1000.0f * targetFlow);
-			///   float timeSec = 3600.0f * timeHr;
-			///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
-			int totalPulses = (int)(7200.0f * test.Volume / outPath.FlowMeter.NominalFlow);	/// Nominal flow in [m3/h]
+            ltrPerRefPulse = outPath.FlowMeter.LtrPerPulse;         /// [ltr/pulse], nominal flow in [m3/h]
+
+            /// Notes:
+            ///   float timeHr = volumeLtr / (1000.0f * targetFlow);
+            ///   float timeSec = 3600.0f * timeHr;
+            ///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
+            int totalPulses = (int)(test.Volume / ltrPerRefPulse); 
 
 			ltrPerRefPulse = outPath.FlowMeter.NominalFlow / 7200.0f;                 /// [ltr/pulse]
 																							/// 
diff --git a/TestBenchFramework/BenchControl/TestMethods/CombinedWithDetection/CombinedWithDetectionSeq.cs b/TestBenchFramework/BenchControl/TestMethods/CombinedWithDetection/CombinedWithDetectionSeq.cs
index a9bb6f1bd..9f719ac60 100644
--- a/TestBenchFramework/BenchControl/TestMethods/CombinedWithDetection/CombinedWithDetectionSeq.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/CombinedWithDetection/CombinedWithDetectionSeq.cs
@@ -40,14 +40,14 @@ namespace TBF.BenchControl.TestMethods.CombinedWithDetection
 			while (!e.Contains(Event.PreviousStopped));
 
 
-			/// Notes:
-			///   float timeHr = volumeLtr / (1000.0f * targetFlow);
-			///   float timeSec = 3600.0f * timeHr;
-			///   uint refPulses = (uint)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
-			int totalPulses = (int)(7200.0f * test.Volume / outPath.FlowMeter.NominalFlow);	/// Nominal flow in [m3/h]
+            ltrPerRefPulse = outPath.FlowMeter.LtrPerPulse;         /// [ltr/pulse], nominal flow in [m3/h]
 
-			ltrPerRefPulse = outPath.FlowMeter.NominalFlow / 7200.0f;                 /// [ltr/pulse]
-																							/// 
+            /// Notes:
+            ///   float timeHr = volumeLtr / (1000.0f * targetFlow);
+            ///   float timeSec = 3600.0f * timeHr;
+            ///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
+            int totalPulses = (int)(test.Volume / ltrPerRefPulse);
+             
             processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);
             
             /// Meters path is required for the following:
diff --git a/TestBenchFramework/BenchControl/TestMethods/FixedStartMassCollection/FixedStartMassCollectionSeq.cs b/TestBenchFramework/BenchControl/TestMethods/FixedStartMassCollection/FixedStartMassCollectionSeq.cs
index b8591e3d1..a04e633e8 100644
--- a/TestBenchFramework/BenchControl/TestMethods/FixedStartMassCollection/FixedStartMassCollectionSeq.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/FixedStartMassCollection/FixedStartMassCollectionSeq.cs
@@ -36,13 +36,13 @@ namespace TBF.BenchControl.TestMethods.FixedStartMassCollection
 			IList<Event> e;                 /// Events from currently running operations
 			Event retVal = Event.Done;
 
-			/// Notes:
-			///   float timeHr = volumeLtr / (1000.0f * targetFlow);
-			///   float timeSec = 3600.0f * timeHr;
-			///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
-			int totalPulses = (int)(7200.0f * test.Volume / outPath.FlowMeter.NominalFlow);    /// Nominal flow in [m3/h]
+            ltrPerRefPulse = outPath.FlowMeter.LtrPerPulse;         /// [ltr/pulse], nominal flow in [m3/h]
 
-			ltrPerRefPulse = outPath.FlowMeter.NominalFlow / 7200.0f;                    /// [ltr/pulse]
+            /// Notes:
+            ///   float timeHr = volumeLtr / (1000.0f * targetFlow);
+            ///   float timeSec = 3600.0f * timeHr;
+            ///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
+            int totalPulses = (int)(test.Volume / ltrPerRefPulse); 
 
             processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);
             
diff --git a/TestBenchFramework/BenchControl/TestMethods/FlyingStart/FlyingStartSeq.cs b/TestBenchFramework/BenchControl/TestMethods/FlyingStart/FlyingStartSeq.cs
index 0e83f9ed5..15650388d 100644
--- a/TestBenchFramework/BenchControl/TestMethods/FlyingStart/FlyingStartSeq.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/FlyingStart/FlyingStartSeq.cs
@@ -36,13 +36,13 @@ namespace TBF.BenchControl.TestMethods.FlyingStart
 			IList<Event> e;                 /// Events from currently running operations
 			Event retVal = Event.Done;
 
-			/// Notes:
-			///   float timeHr = volumeLtr / (1000.0f * targetFlow);
-			///   float timeSec = 3600.0f * timeHr;
-			///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
-			int totalPulses = (int)(7200.0f * test.Volume / outPath.FlowMeter.NominalFlow);    /// Nominal flow in [m3/h]
+            ltrPerRefPulse = outPath.FlowMeter.LtrPerPulse;         /// [ltr/pulse], nominal flow in [m3/h]
 
-			ltrPerRefPulse = outPath.FlowMeter.NominalFlow / 7200.0f;                    /// [ltr/pulse]
+            /// Notes:
+            ///   float timeHr = volumeLtr / (1000.0f * targetFlow);
+            ///   float timeSec = 3600.0f * timeHr;
+            ///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
+            int totalPulses = (int)(test.Volume / ltrPerRefPulse); 
 
             processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);
             
@@ -253,9 +253,9 @@ namespace TBF.BenchControl.TestMethods.FlyingStart
             tstRslt.FlowVolume = 3600.0f * ltrPerRefPulse * cBrd.EtPulses(0) / tstRslt.Time;    /// [l/h]
             tstRslt.PulsesMaster = cBrd.EtPulses(0);                                            /// Pulses of the master flow meter (test total)
             /// TODO: tuto pokracovat
-            tstRslt.VolumeMaster = ltrPerRefPulse * tstRslt.PulsesMaster;                           /// [l] volume from the master flow meter
-            tstRslt.VolumeCTV = 1.00103f * 1000.0f * tstRslt.MassDiff / tstRslt.DensityOut;     /// [l] 1000.0f is because density is in [kg/m3]
-            tstRslt.ConstMaster = ltrPerRefPulse * tstRslt.VolumeCTV / tstRslt.VolumeMaster;
+            tstRslt.VolumeMaster = ltrPerRefPulse * tstRslt.PulsesMaster;                       /// [l] volume from the master flow meter
+            tstRslt.ConstMaster = outPath.FlowMeter.LtrPerPulseCorrected(tstRslt.FlowVolume);
+            tstRslt.VolumeCTV = tstRslt.ConstMaster * tstRslt.PulsesMaster;                     /// [l] 1000.0f is because density is in [kg/m3]
 			/// Corrected master pulses per liter
 			if (tstRslt.VolumeCTV <= float.Epsilon)
 			{
diff --git a/TestBenchFramework/BenchControl/TestMethods/FlyingStartCollectionMethod/FlyingStartCollectionMethodSeq.cs b/TestBenchFramework/BenchControl/TestMethods/FlyingStartCollectionMethod/FlyingStartCollectionMethodSeq.cs
index 6a847d917..66eef7b80 100644
--- a/TestBenchFramework/BenchControl/TestMethods/FlyingStartCollectionMethod/FlyingStartCollectionMethodSeq.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/FlyingStartCollectionMethod/FlyingStartCollectionMethodSeq.cs
@@ -43,9 +43,6 @@ namespace TBF.BenchControl.TestMethods.FlyingStartCollectionMethod
 			///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
 			int totalPulses = (int)(test.Volume / ltrPerRefPulse); 
              
-            /// Double total pulses for 'added' flowmeters
-            if (outPath.FlowMeter.Cfg.Name.Contains("+")) { totalPulses *= 2; }
-
             processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);
 
 			int repetitionNr = 1;                 /// First test: repetitionNr=1				
diff --git a/TestBenchFramework/BenchControl/TestMethods/ReferenceFlowmeterCalibration/ReferenceFlowmeterCalibrationSeq.cs b/TestBenchFramework/BenchControl/TestMethods/ReferenceFlowmeterCalibration/ReferenceFlowmeterCalibrationSeq.cs
index 59d2ba444..aa08107f3 100644
--- a/TestBenchFramework/BenchControl/TestMethods/ReferenceFlowmeterCalibration/ReferenceFlowmeterCalibrationSeq.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/ReferenceFlowmeterCalibration/ReferenceFlowmeterCalibrationSeq.cs
@@ -36,13 +36,13 @@ namespace TBF.BenchControl.TestMethods.ReferenceFlowmeterCalibration
 			IList<Event> e;                 /// Events from currently running operations
 			Event retVal = Event.Done;
 
-			/// Notes:
-			///   float timeHr = volumeLtr / (1000.0f * targetFlow);
-			///   float timeSec = 3600.0f * timeHr;
-			///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
-			int totalPulses = (int)(7200.0f * test.Volume / outPath.FlowMeter.NominalFlow);    /// Nominal flow in [m3/h]
+            ltrPerRefPulse = outPath.FlowMeter.LtrPerPulse;         /// [ltr/pulse], nominal flow in [m3/h]
 
-			ltrPerRefPulse = outPath.FlowMeter.NominalFlow / 7200.0f;                    /// [ltr/pulse]
+            /// Notes:
+            ///   float timeHr = volumeLtr / (1000.0f * targetFlow);
+            ///   float timeSec = 3600.0f * timeHr;
+            ///   int refPulses = (int)(timeSec * (2000.0f * targetFlow / pOut.FlowMeter.NominalFlow));
+            int totalPulses = (int)(test.Volume / ltrPerRefPulse); 
 
             processDataLoggingOp = new TBF.BenchControl.Operations.ProcessDataLoggingOp(processDataLogger, this);