Operating Instructions
15
6.3 Configuration
The configuration consists of four sub menus:
1. Measuring Range
2. Calibration
3. Outputs
4. Alarm
The four menu points:
The numbering of 6.3 adheres to the PME menu configuration and the same as to the PC software, not to the
numbering in this manual.
1. Measuring Range
1.1 Tag No.
As selected.
1.2 Unit
Option mg/m³
g/m³
%
1.3 Dec. place
Option 0000
000.0
00.00
1.4 Filter time
Input 0 – 99.9 s, smoothing of the measuring value by a floating average.
2. Calibration
(Please note, numbering of PME and PC software is different)
The principle of calibration is to give dust load values to a corresponding raw value. The raw value is a
dimensionless number coming from the sensor, a low value for zero conditions (mostly from noise) and a
higher level with the complying dust concentration. The higher the dust concentration, the higher the raw
value.
2.1 Calibration factor
Input 0.01 to 99.99, adjustment of the measured value, multiplies the
(Common for PME
calibrated measured value, used for later correction of the calibration.
and PC software)
PME-touchscreen
2.2 Zero calibration
Zero calibration (the first calibration point), acquiring of an arbitrary amount
of samples. These will be incremented until triggering “Enter” or “C (cancel)”
button. Preferably this will be performed in Stop condition of the airflow
system.
2.3 Zero point
If there was no zero condition during calibration the reference value for this
condition has to be set here.
2.4 Interpolation
Calibration point, this requires a certain number of samples. These will be
point calibration
incremented by triggering “Enter” or “C (cancel)” button. The unit will collect
raw values and will finally calculate the average of the samples. Then a
reference value has to be taken and compared to the calculated average
value.
2.5 Interpolation point
Editing of the calibration point value.
PME-touchscreen-
All values will be saved when leaving the configuration menu. If there
configuration
has been any changes, the display will ask: “Save Changes, OK or NO”.
At this point it is possible to ignore all changes.
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