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5.11 Data-logger
The data-logger can store up to 3000 values. At a sampling
interval of one measurement per minute the data-logger stores
the measurement history of approximately 50 hours. This time
can be significantly increased if the Trigger function is enabled.
The data-logger can only be downloaded using the PolySoft
PC software. The last 15 minutes as a time/concentration
graph can be viewed entering the menu
Information >
Datalogger > Graph (see Section 5.8.5 on Page 23) or via the
function key.
5.11.1 Data-logger on or off
The Data-logger function is not covered by
BVS 13 ATEX G 001 X and PFG 14 G 001 X.
1. Select Settings > Datalogger > Datalogr. on/off and
confirm.
2. Select Enable or Disable and confirm.
5.11.2 Set data-logger
Sampling time
This function defines how often a value will be stored.
1. Select Settings > Datalogger > Datalogr. on/off >
Sample time and confirm.
2. Select the sample time and confirm.
Setting peak/Average
This function determines which value will be stored.
1. Select Settings > Datalogger > Set datalogger > Peak/
Average and confirm.
2. Select the Peak or Average and confirm.
Trigger on or off
1. Select Settings > Datalogger > Set datalogger > Trigger
on/off and confirm.
2. Select On or Off and confirm.
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 > Datalogger > Datalogr. on/off >
Trigger value and confirm.
2. Set the trigger value and confirm.
Stack/Roll
This function defines whether values are overwritten or top out.
1. Select Settings > Datalogger > Set Datalogger > Stack/
Roll and confirm.
2. Select Stack or Roll and confirm.
5.11.3 Clear data-logger
This function deletes the stored data.
1. Select Settings > Datalogger > Clear Datalogr.
and confirm.
2. To clear the data-logger, select Confirm and confirm with
[OK].
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 sampling
time is stored.
If
turned
On
Measurements will be stored if they exceed a
threshold beyond the trigger value (relative
to the last stored value).
If
turned
Off
Measurements within the sampling time will
be stored.
Roll Once the capacity of the data-logger is
reached, the old data will be overwritten by
new values.
Stack Once the capacity of the data-logger is
reached, no more data can be stored. The
instrument will issue a warning.