The command line program sox should be able to handle
that.
Indeed, this should work:
sox -e raw -b 32 -c 1 -r SAMPLERATE --endian little data.raw -b 16 -c 1
-r 44100 sound.wav
(change SAMPLERATE to the sampling rate in Hertz of your analytical
instrument, data.raw to your input file name, and sound.wav to your
output file name).
Cheers,
Pierre