Dräger Polytron 8000 Series, Техническое руководство

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62 Technical Manual
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Dräger Polytron
®
8000 Series
Instrument settings
12.8.6 Switching triggering mode on or off
This function allows storing values from a certain value on.
1. Select
Settings > Data logger > Data logger > Trigger on/off and confirm.
2. Select On or Off and confirm.
12.8.7 Setting trigger value
This function defines the trigger threshold to store a value.The trigger value is
defined as a percentage of the full scale deflection.
Example: A trigger value of 2 % at full scale deflection of 500 ppm will only store
values if they deviate by 10 ppm (relative to the previously stored value).
1. Select
Settings > Data logger > Datalogr. on/off Trigger value and confirm.
2. Set the trigger value and confirm.
12.8.8 Setting stack/roll function
1. Select Settings > Data logger > Data logger > Stack/Roll and confirm.
2. Select Stack or Roll and confirm.
12.8.9 Clearing data logger
This function deletes the stored data.
1. Select
Settings > Data logger > Clear data logger and confirm.
2. To clear the data-logger, select Confirm and confirm with [OK].
12.9 Relays
The instrument ships with all relays (A1, A2, FLT) configured by default to normally
energized. This provides a “fail-safe” operation.
Peak The maximum value (if monitoring falling
concentrations, the minimum value) of
the measured concentrations within the
selected sampling time is stored.
Average The average value of all the measured
concentrations within the selected sam-
pling time is stored
On Measurements are stored if they exceed
a threshold beyond the trigger value (rel-
ative to the last stored value).
Off Measurements within the sampling time
are stored.
Roll Once the capacity of the data logger is
reached, the old data are overwritten by
new values.
Stack Once the capacity of the data logger is
reached, no more data can be stored.
The instrument issues a warning.