Model 11-R
GRIMM AEROSOL TECHNIK GmbH & Co.KG Seite 25 von 83
2.5.1 Button functions in standby mode
The settings of the dust monitor can be changed in standby mode.
Reading the mean values
The mean dust concentration value with the corresponding sample volume is displayed for
all measurements when the device is powered up. The gravimetry factor is taken into ac-
count for this display.
In the particle concentration display mode, the mean values of both selected channels are
displayed and an underscore serves as the distinguishing feature. The sample volume for
the mean values appears after approximately 5 seconds and is displayed as long as the but-
ton is pressed.
When {Mean/Weight} and the {-} button are pressed at the same time for 5 seconds,
the mean value and the sample air volume are reset to zero.
Pressing {Mean/Weight} and the {+} button at the same time displays the expected filter
weight and the corresponding sample volume. The gravimetry factor is not taken into ac-
count for the filter weight.
Starting a new measurement
Pressing this button exits standby mode and starts a new measurement series.
Setting the measuring mode and selecting the size channels to be displayed
Press and hold the {Size Mode} button and then also press the {+} or {-} button
several times to change the channel that is shown on the first and second line of the
display – either particle mass or particle concentration. The channel shown in the
first line of the display is used for the alarm value.
Please note that data sent over the RS-232 interface and recorded on the memory card
are of the same type shown on the display. That means either mass or particle concen-
trations can be recorded!
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