Dräger 4543445, Operating Manual

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3.4.4 Span Adj
Allows you to adjust the displayed gas concentration to match the known
concentration of an applied calibration gas. For example, if a 50% LEL
calibration gas is applied to the sensor, the Span Adj value should be adjusted
to 50 once the sensor reading has stabilized. See Section 4.1.1, Calibration
Procedure, for details.
3.4.5 FSD Adj
The Full Scale Deflection is fixed at 100% LEL for the Polytron FX and
Polytron FX IR or 10% LEL for the Polytron FX LC.
3.4.6 A1 Adj
This menu item is not active for the Polytron FX.
3.4.7 A2 Adj
This menu item is not active for the Polytron FX.
3.4.8 A1 Lat
This menu item is not active for the Polytron FX.
3.4.9 A2 Lat
This menu item is not active for the Polytron FX.
3.4.10 A1 Acn
This menu item is not active for the Polytron FX.
3.4.11 A2 Acn
This menu item is not active for the Polytron FX.
3.4.12 Cal Sig
Calibration signal is the signal that is transmitted by the 4 to 20mA output
anytime you access the software menu. It is user-selectable. The two
possibilities are:
a steady 3 mA signal
an oscillating 3 to 5mA signal with a frequency of 1 Hz
The default value is a steady 3 mA signal.
3.4.13 LCD On/Off
This feature allows you to turn the LCD output off if the desired, effectively
turning the Polytron FX into a non-display instrument. The 4 to 20mA output
remains active independent of the LCD state. If the LCD is Off, pressing the
Down arrow when in measurement mode still gives you access to the software
functions.
Menu Items