Index: firmware/App/Drivers/PressureSensor.h
===================================================================
diff -u -rfefb47e88a5285e99498efb830fdceb9e95c2c3e -r48c75a394c56b82886760e9a136b638edecf7572
--- firmware/App/Drivers/PressureSensor.h	(.../PressureSensor.h)	(revision fefb47e88a5285e99498efb830fdceb9e95c2c3e)
+++ firmware/App/Drivers/PressureSensor.h	(.../PressureSensor.h)	(revision 48c75a394c56b82886760e9a136b638edecf7572)
@@ -35,8 +35,10 @@
 /// Enumeration of pressure sensors monitored by this module.
 typedef enum PressureSensors
 {
-    PRESSURE_SENSOR_HYDRAULICS_OUTLET = 0,                          ///< Hydraulics outlet pressure (PHo/Pn)
-    PRESSURE_SENSOR_FIRST = PRESSURE_SENSOR_HYDRAULICS_OUTLET,      ///< First pressure to scan
+    PRESSURE_SENSOR_WATER_INLET_INPUT = 0,                          ///< Water Inlet pressure before regulator (PRi)
+    PRESSURE_SENSOR_FIRST = PRESSURE_SENSOR_WATER_INLET_INPUT,      ///< First pressure to scan
+    PRESSURE_SENSOR_WATER_INLET_OUTPUT,                             ///< Water Inlet pressure after regulator (PRo)
+    PRESSURE_SENSOR_HYDRAULICS_OUTLET,                              ///< Hydraulics outlet pressure (PHo/Pn)
     PRESSURE_SENSOR_BIBAG,                                          ///< Dry Bicarb pressure (PDB/PCb)
     PRESSURE_SENSOR_SPENT_DIALYSATE,                                ///< Spent Dialysate pressure (PDs)
     PRESSURE_SENSOR_FRESH_DIALYSATE,                                ///< Fresh Dialysate pressure (PDf)