Intelligent Aerosol Drying System (Iads) Screen - Palas Fidas 200 Series Operating Manual

5 Operation and settings
Menu path
Setting
off (for testing)
remove volatile / moisture
compensation (default setting for op-
eration as certified measuring equip-
ment)
remove volatile and semi-
volatile (for testing)
46
5.2.6

Intelligent Aerosol Drying System (IADS) screen

The drying section IADS extracts moisture from the aerosol. Moisture such
as mist droplets could otherwise be interpreted as particles.
One of three settings can be selected in this screen. Please keep in mind:
Operation as certified measuring equipment is permitted only with the default
setting remove volatile / moisture compensation.
Main menu > accessories > IADS
Intelligent Aerosol Drying System (IADS) screen
Effect
The IADS is switched off. But the internal tube in the IADS is
heated to +2K, based on the ambient temperature, to prevent
condensation inside of the IADS and the optical sensor.
The IADS dissolves volatile components of the aerosol and com-
pensates the water condensation as well as the consequent parti-
cle growth when the relative humidity is greater than 60%.
The setpoint temperature is set dynamically as a factor of the am-
bient temperature and humidity.
The IADS dissolves volatile and semi-volatile components of the
aerosol and compensates the effect of humidity on particle size.
The internal IADS heater is set to a constant temperature of
75 °C.
5200-en_V2.0_06/20