Model 11-R
GRIMM AEROSOL TECHNIK GmbH & Co.KG Seite 26 von 83
Display of the analogue values
Pressing the {Temp %rH} button shows the values for the analogue input jack, e.g.
the external sensor for temperature and humidity, and the time. This operating mode
remains selected until any button is pressed.
Reading the battery charge level and determining the measuring location number
Pressing this button displays the current battery charge level in % and the configured
measuring location number. 130% is shown when operating on the power supply and
values in excess of 100% are possible when the battery is fully charged. By pressing
and holding the {Battery/Location} button, the measuring location number can be
changed with the {+} and {-} buttons.
The measuring location number is used to differentiate between measurements and
can be set between 1 and 99.
Changing the alarm threshold, need for thinning in case of coincidence
Pressing the {Alarm} button and the {+} or {-} button changes the alarm threshold.
At 0 the alarm function is deactivated. A value greater than zero activates the alarm.
The alarm value always refers to the size channel in the upper line of the display and
the selected operating mode (mass or particle concentration).
Coincidence is the simultaneous occurrence of at least two particles in the course of the beam, which
are counted as one particle of a different diameter. As a result, the size is assigned to an incorrect
channel compared to the individual measurement. Thinning should therefore be applied for particle con-
centrations of more than 2,000,000 particles per litre, since the coincidence is too high starting with this
concentration and cannot be corrected internally anymore. The alarm threshold is also used to monitor
interior rooms and to trigger a corresponding alarm when a certain particle concentration is reached.
Setting the time and date
Short press: Display of date and time.
Longer press: Adjust date and time.
The location of the flashing cursor can be changed by pressing the {+}- or {-}- button.
Pressing the {Date/Time} button again advances the cursor. If no button is pressed
for some time (approximately 3 seconds), the device returns to standby mode. When
changing the minutes, the seconds are simultaneously reset to zero.
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