Index: firmware/App/Drivers/ConductivitySensors.h
===================================================================
diff -u -rb6b17e417c14f820a81e93dd7b20aa9dd790a7c1 -r336f6c49e05f515ca1250e0fd9ea97e5f5b5f11c
--- firmware/App/Drivers/ConductivitySensors.h	(.../ConductivitySensors.h)	(revision b6b17e417c14f820a81e93dd7b20aa9dd790a7c1)
+++ firmware/App/Drivers/ConductivitySensors.h	(.../ConductivitySensors.h)	(revision 336f6c49e05f515ca1250e0fd9ea97e5f5b5f11c)
@@ -8,7 +8,7 @@
 * @file    ConductivitySensors.h
 *
 * @author  (last)      Michael Garthwaite
-* @date    (last)      15-Apr-2026
+* @date    (last)      17-Apr-2026
 *
 * @author  (original)  Vinayakam Mani
 * @date    (original)  13-Sep-2024
@@ -84,8 +84,8 @@
     F32 alpha_low;                                      ///< Temperature correction, low range, default = 0.02, range = [0.005, 0.04]
     F32 eta_low;                                        ///< Resistance scale factor, low range, default = 1, range = [0.5, 3]
     F32 zeta_low;                                       ///< Resistance offset, low range, default = 0, range = [-1000, 1000]
-    F32 beta;                                           ///< Temperature scale factor, default = 1, range = [0.5, 2]
-    F32 delta;                                          ///< Temperature offset, default = 0, range = [-10, 10]
+    F32 beta;                                           ///< Temperature scale factor, default = 1, range = [0.2, 1.0]
+    F32 delta;                                          ///< Temperature offset, default = 0, range = [-300, 300]
     F32 reserved1;                                      ///< Reserved cal slot.
     F32 reserved2;                                      ///< Reserved cal slot.
 } CONDUCTIVITY_COEFFICIENTS_T;