5
Operation and settings
5200-en_V2.0_06/20
59
Parameter
Meaning
Explanation
An error is indicated if this occurs at a frequency greater than
20%. This error occurs after a situation that generates a large
amount of fine dust, such as fireworks. If the error occurs
more than once a year, it is an indication that the aerosol sen-
sor lens is polluted.
suction pumps
Note
The value indicates the power consumption of the two
aerosol pumps. If both pumps and the preceding pump are
okay, the value is between 38% and 50%.
If the value slowly increases over time, the filter has to be re-
placed to reduce the strain on the pumps.
If the value increases suddenly, one of the two pumps may
be defective and has to be replaced (available only from
Palas or a sales partner).
An error is triggered when 80% of the power is exceeded. If a
flow rate of 4.8 l/min can be maintained, the device continues
to provide correct results. But have the pumps replaced as
soon as possible.
weather station
The measured
data is invalid.
Indicates whether a weather station is properly connected
and transferring the measured values.
IADS
The measured
data is invalid.
Indicates whether the IADS is properly connected and the
temperature is the same as the specified setpoint.
If the temperature outside is below 23°C, the temperature of
the IADS has to be higher than the temperature outside. If
not, the probe or the IADS heater is defective.
If a very low temperature is indicated, the probe is probably
broken.
If a very high temperature is indicated, short-circuiting is
likely.
calibration
Note
Monitors calibration.
If over the average of 40 hours the calibration deviates more
than 3.5 raw data channels, an error is triggered.
When the fine dust pollution is minimal, the value can fluctu-
ate by more than 2.5 raw data channels. The value can be
adjusted in the
promo.ini
file if necessary.
It may be advisable to shorten the testing intervals when
there is excessive air pollution at the site and the calibration
status is often indicated incorrectly.
LED temperature
The measured
data is invalid.
The LED light source is temperature-controlled. If a problem
occurs in this control circuit, an error bit is set.
The temperature is normally about 10K higher than the tem-
perature of the device. If the temperatures are the same, the
LED is defective.
If the displayed temperature is significantly higher than the
temperature of the device, a probe may be defective.
operating mode
Note
Indicates whether the device is in auto mode.