Advantages of Transmitter:
-Diagnostic features Via HART if any asset management packages are used. Which will reduce instrument failures leading to trips
-Flexibility in changing setpoint in the ESD system after commissioning.
-Pre alarm can be configured in ESD and relayed to the operator
-HH/LL multiple trips can be initiated from the same instrument.

Switch
-safety engineers may prefer switched since its more reliable and trip setpoints will not be altered without proper documentation.
-no diagnostics