opcsim.Nephelometer.evaluate¶

Nephelometer.evaluate(self, distribution, rh=0.0, \*\*kwargs)¶

Evaluate a Nephelometer for an AerosolDistribution at a given relative humidity.

Parameters

distribution: opcsim.AerosolDistribution: The aerosol distribution used to calibrate the Nephelometer.
rh: float: The relative humidity at which the calibration takes place. Default is 0 %.

Returns

cscat: float: The total summed scattering signal across the entire size distribution.
pm1: float: The total PM1 value in ug/m3
pm25: float: The total PM2.5 value in ug/m3
pm10: float: The total PM10 value in ug/m3
Cscat, pm1, pm25, pm10: floats

Examples

Build and calibrate a Nephelometer to a simple 1-mode distribution of Ammonium Sulfate.

>>> neph = Nephelometer(wl=0.6, theta=(7., 173.))
>>>
>>> d = opcsim.AerosolDistribution("AmmSulf")
>>> d.add_mode(n=1000, gm=0.2, gsd=1.25, refr=complex(1.521, 0), rho=1.77, kappa=0.53)
>>> 
>>> neph.calibrate(d, rh=0.)
>>>
>>> neph.evaluate(d, rh=85.)