  We extend our previous study [J. Chem. Phys. 138, 204907 (2013)] to quantify
the screening properties of four mesoscale smoothed charge models used in
dissipative particle dynamics. Using a combination of the hypernetted chain
integral equation closure and the random phase approximation, we identify
regions where the models exhibit a real-valued screening length, and the extent
to which this agrees with the Debye length in the physical system. We find that
the second moment of the smoothed charge distribution is a good predictor of
this behaviour. We are thus able to recommend a consistent set of parameters
for the models.
