Prt File Node pick .prt particles file. And can set Particle size for levelset conversion.

Output / Particles:
output particles.

Select prt file.

use Single file:
When checked, selected file is using as single file import.

Frame Offset:
Added to the some number to calculate the PRT file frame number.

PRT File Scale:
Convert prt file scale unit into the scene.

Particle Size:
Defines particle size. This size use for levelset conversion.

variation [%]:
Defines particle size variation.

Random Seed:
Defines random seed for size variation.