Solution
The scale lines appearing in the TDMS files written with the DAQmx Configure Logging VI in LabVIEW are expected. The function is designed to optimize throughput and file size by logging unscaled binary data to the TDMS file. As a result, it also writes the channel's scaling expression to the TDMS file, so that you can read the data in F64 format with the correct units for the channel's measurement type. For many devices, this scaling expression also includes the device's calibration scaling.