DMT152 can be connected to a PC using the RS-485 line on Port II. You can use, for example, the USB serial interface cable (Vaisala order code 219690). The cable also provides enough operating power for transmitter configuration purposes from the USB port. For continuous measurement, it is recommended to supply the transmitter with operating power from another cable: see Power supply requirements.
If you have not used the DMT152 USB serial interface cable before, install the driver that came with the cable. See Installing driver for USB service cable for detailed instructions.