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3. First time use and general operation
3.1 Preparation for first time use
Before using the measuring device, the integrity of all components must be checked, e.g.:
Device exhibits no visible damage
No condensed water in the gas preconditioner
The gas preconditioner filter is clean
Gas hoses without defects
Visual inspection of the probe
Connect the quick-release hose coupling of the flue gas probe into the gas inlet G of the
measuring device and the jack plug of the flue gas probe in the temperature input T of the
measuring device. Ensure before each measurement that a clean filter is inserted in the gas
preconditioner!
Only turn the FG4200 on, if the flue gas probe is located in fresh air. The null signals of the
sensors are matched with the fresh air.
3.1.1 Prior to each measurement
The air-tightness of the gas path can be tested easily: Close the gas inlet of the probe with
the round cap. If the gas path is not leaking, the pump should now deliver more power. The
sound of the pump changes accordingly. If no change occurs, then the gas path must be
checked with a gas flow meter.
3.1.2 Touch screen
The FG4200 is controlled by a touch-sensitive display (touch screen). You can execute typ-
ing and scrolling functions on the screen using your finger or a plastic pen. Ball-point pens,
pencils, metal pins, etc. are not suitable.
Because the display contains a resistive touch screen, slightly more pressure must be ap-
plied during operation compared with today's smartphones with their capacitive touch
screens.
Menus and lists can be moved up and down by up/down swiping gestures (scrolling).
Menus and lists positions are highlighted by tapping. The selected item is activated via the
selection button or by tapping again.
Touching the display with sharp or pointed objects may lead to the destruction of the
display.
5695049
Edition 04 – January 2019
en
Operating Instructions Dräger FG4200
6
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