Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -r41baa5b8828f2a2b1d19b51a4c908f1871a801b1 -r3bf0a70692b6d6a2908d2ee6186e91a339016956
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 41baa5b8828f2a2b1d19b51a4c908f1871a801b1)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 3bf0a70692b6d6a2908d2ee6186e91a339016956)
@@ -815,6 +815,13 @@
         }
     }
 
+    // Check the measured flow against estimated flow - // TODO: Will revise this scheme with Sean's inputs. DN-27OCT2022
+    F32 deltaFlow = 0.5 * estimatedFlow;    // 50% estimated flow
+    if ( deltaFlow < fabs( estimatedFlow - filteredDialInFlowMeterReading ) )
+    {
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_DIAL_IN_FLOW_CHECK_FAILURE, filteredDialInFlowMeterReading, estimatedFlow );
+    }
+
     return estimatedFlow;
 }