Can we directly replace the SENCOM sensors with the SA11 when connected to the SMARTDAC+(Data Logger) or any other device If not what needs to be changed?

The Modbus register maps should be updated. Yokogawa will make a service manual available with the new mapping. For existing installations, please contact the local Analytical or Data Aquisition Product Manager. New files will be created for the SMARTDAC+ for easy transition to the new platform.