Index: NVDataMgmt.c
===================================================================
diff -u -rbaf058a87ecbabfc0672c2c29b20657d8541a38a -r2e09881186cf980912956f5c1f490fecc1f44fbb
--- NVDataMgmt.c	(.../NVDataMgmt.c)	(revision baf058a87ecbabfc0672c2c29b20657d8541a38a)
+++ NVDataMgmt.c	(.../NVDataMgmt.c)	(revision 2e09881186cf980912956f5c1f490fecc1f44fbb)
@@ -144,7 +144,7 @@
 #define DEFAULT_ACID_COND_US_PER_CM          11645.05F                                                          ///< Record default acid conductivity in uS/cm.
 #define DEFAULT_ACID_BOTTLE_TEMP_C           23.5F                                                              ///< Record default acid bottle temperature in C.
 #define DEFAULT_RSRVR_TEMP_TAU_C_PER_MIN     -0.25F                                                             ///< Reservoir temperature time constant C/min.
-#define DEFAULT_UF_TEMP_TAU_C_PER_MIN        -1.0F                                                              ///< Ultrafilter temperature time constant C/min.
+#define DEFAULT_UF_TEMP_TAU_C_PER_MIN        -0.6F                                                              ///< Ultrafilter temperature time constant C/min.
 #define DEFAULT_UF_VOLUME_ML                 700                                                                ///< Ultrafilter volume in milliliters.
 
 #define DEFAULT_FILL_1251_1_ACID_SNSR_US_PER_CM   0.0F                                                          ///< Fill acid 1251_1 acid sensor conductivity uS/cm.