Index: NVDataMgmt.c
===================================================================
diff -u -rd62b73b3f8d61512d86ba9e44342f95dad0f2f2f -ra7194433fde8abbd5c13e77b6bd1c7648a11b0b7
--- NVDataMgmt.c	(.../NVDataMgmt.c)	(revision d62b73b3f8d61512d86ba9e44342f95dad0f2f2f)
+++ NVDataMgmt.c	(.../NVDataMgmt.c)	(revision a7194433fde8abbd5c13e77b6bd1c7648a11b0b7)
@@ -138,8 +138,8 @@
 #define DEFAULT_ACID_BOTTLE_VOL_ML           3430.0F                                                            ///< Record default acid bottle volume in milliliters.
 #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     -0.512F                                                            ///< Reservoir temperature time constant C/min.
-#define DEFAULT_UF_TEMP_TAU_C_PER_MIN        -4.565F                                                            ///< Ultrafilter temperature time constant C/min.
+#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_VOLUME_ML                 700                                                                ///< Ultrafilter volume in milliliters.
 
 #define DEFAULT_FILL_1251_1_ACID_SNSR_US_PER_CM   11518.05F                                                     ///< Fill acid 1251_1 acid sensor conductivity uS/cm.