Yes, all our Transmitters (DP, Pressure, Temperature, Density, Position...) have an internal FLASH memory to keep important information.
For instance, data related with the configuration and calibration will not be lost in case of a power glitch or if it goes completely off.
Not only that, imagine that your transmitter is doing Volume Totalization or PID control.  After a power failure the last value for the totalized volume and last output calculated by the PID controller will be available.
There is an extra protection for configuration and calibration data on the SMAR LD300 and LD290 series of pressure transmitter.  Those transmitter can send data to an extra Flash memory located in the pressure sensor. Obviously, in case of a malfunction, like lost of calibration or configuration data, these data can be retrieved.