Index: firmware/App/Controllers/Heaters.c
===================================================================
diff -u -r325e67dab10f6666702bf0f1256015b31e58de4f -rd305a91c82fe89a76d9accbb8faa3d81e3106341
--- firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 325e67dab10f6666702bf0f1256015b31e58de4f)
+++ firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision d305a91c82fe89a76d9accbb8faa3d81e3106341)
@@ -404,7 +404,11 @@
     if ( ++primaryTargetTempAdjCounter >= D5_TARGET_TEMP_ADJUST_INTERVAL_MS )
     {
         F32 targetTempfromTD            = getTDTargetDialysateTemperature();
+#ifdef __TEENSY_CONDUCTIVITY_DRIVER__
+        F32 measuredTempAtDialyzer      = getTeensyConductivityTemperatureValue( D27_COND );
+#else
         F32 measuredTempAtDialyzer      = getConductivityTemperatureValue( D27_COND );
+#endif
         F32 calcTargetTemp              = getHeaterTargetTemperature( D5_HEAT );
         F32 dialysateFlowrate           = getTDDialysateFlowrate();
         F32 deltaTempC                  = targetTempfromTD - measuredTempAtDialyzer;