Index: leahi_dialin/common/fp_defs.py
===================================================================
diff -u -r44e3f5623aeafcb704c4cd2d0e4af953e5579a8d -rd2774cbe954e861f6ec31d44134e74c8e9d66f22
--- leahi_dialin/common/fp_defs.py	(.../fp_defs.py)	(revision 44e3f5623aeafcb704c4cd2d0e4af953e5579a8d)
+++ leahi_dialin/common/fp_defs.py	(.../fp_defs.py)	(revision d2774cbe954e861f6ec31d44134e74c8e9d66f22)
@@ -95,11 +95,11 @@
 
 @unique
 class FPPressureSensorNames(DialinEnum):
-    M1_PRES                             = 0     # Water inlet pressure before regulator
-    M3_PRES                             = 1     # Water inlet pressure after regulator
-    P8_PRES                             = 2     # Water inlet pressure before the conductivity sensor
-    P13_PRES                            = 3     # Pressure before the RO filter
-    P17_PRES                            = 4     # Pressure after the RO filter
+    M3_PRES                             = 0     # Water inlet pressure before regulator
+    P8_PRES                             = 1     # Water inlet pressure after regulator
+    P13_PRES                            = 2     # Water inlet pressure before the conductivity sensor
+    P17_PRES                            = 3     # Pressure before the RO filter
+    P46_PRES                            = 4     # Pressure after the RO filter
     NUM_OF_FP_PRES_SENSORS              = 5     # Number of Pressure Sensors
 
 @unique
Index: leahi_dialin/fp/modules/pressure_sensors.py
===================================================================
diff -u -r00412d78bda4176d5c45a3778cb90ad907928965 -rd2774cbe954e861f6ec31d44134e74c8e9d66f22
--- leahi_dialin/fp/modules/pressure_sensors.py	(.../pressure_sensors.py)	(revision 00412d78bda4176d5c45a3778cb90ad907928965)
+++ leahi_dialin/fp/modules/pressure_sensors.py	(.../pressure_sensors.py)	(revision d2774cbe954e861f6ec31d44134e74c8e9d66f22)
@@ -47,11 +47,11 @@
                                                                        self._handler_pressure_sync)
 
         self.fp_pressures = {
-            FPPressureSensorNames.M1_PRES.name: 0.0,
             FPPressureSensorNames.M3_PRES.name: 0.0,
             FPPressureSensorNames.P8_PRES.name: 0.0,
             FPPressureSensorNames.P13_PRES.name: 0.0,
-            FPPressureSensorNames.P17_PRES.name: 0.0
+            FPPressureSensorNames.P17_PRES.name: 0.0,
+            FPPressureSensorNames.P46_PRES.name: 0.0
         }
 
         self.fp_pressure_timestamp = 0.0
@@ -66,15 +66,15 @@
         @return: none
         """
 
-        self.fp_pressures[FPPressureSensorNames.M1_PRES.name] = struct.unpack('f', bytearray(
-            message['message'][MsgFieldPositions.START_POS_FIELD_1:MsgFieldPositions.END_POS_FIELD_1]))[0]
         self.fp_pressures[FPPressureSensorNames.M3_PRES.name] = struct.unpack('f', bytearray(
-            message['message'][MsgFieldPositions.START_POS_FIELD_2:MsgFieldPositions.END_POS_FIELD_2]))[0]
+            message['message'][MsgFieldPositions.START_POS_FIELD_1:MsgFieldPositions.END_POS_FIELD_1]))[0]
         self.fp_pressures[FPPressureSensorNames.P8_PRES.name] = struct.unpack('f', bytearray(
-            message['message'][MsgFieldPositions.START_POS_FIELD_3:MsgFieldPositions.END_POS_FIELD_3]))[0]
+            message['message'][MsgFieldPositions.START_POS_FIELD_2:MsgFieldPositions.END_POS_FIELD_2]))[0]
         self.fp_pressures[FPPressureSensorNames.P13_PRES.name] = struct.unpack('f', bytearray(
-            message['message'][MsgFieldPositions.START_POS_FIELD_4:MsgFieldPositions.END_POS_FIELD_4]))[0]
+            message['message'][MsgFieldPositions.START_POS_FIELD_3:MsgFieldPositions.END_POS_FIELD_3]))[0]
         self.fp_pressures[FPPressureSensorNames.P17_PRES.name] = struct.unpack('f', bytearray(
+            message['message'][MsgFieldPositions.START_POS_FIELD_4:MsgFieldPositions.END_POS_FIELD_4]))[0]
+        self.fp_pressures[FPPressureSensorNames.P46_PRES.name] = struct.unpack('f', bytearray(
             message['message'][MsgFieldPositions.START_POS_FIELD_5:MsgFieldPositions.END_POS_FIELD_5]))[0]
 
         self.fp_pressure_timestamp = timestamp