Menu Structure; Remarks Concerning The Display; Calibration And Maintenance; Faults - Dräger PEX 3000 Instrucciones Para El Servicio

Menu structure

The transmitter PEX 3000 is provided with a 7-segment-LED-display and two scroll
q l
keys (key and key ) to navigate through the described menus.
Pressing both the scroll keys simultaneously results in an OK-function, indicated as
q l
"keys ( + )" in the following.
l
Key is additionally marked with a capital M to indicate that you can enter the Menu
functions when pressing this key.
Both these menus can only be escaped by means of the key
Display and scroll keys are accessible after opening the transmitter's enclosure (see
picture).
Attention:
Dust explosion protection is not ensured after having opened the transmitter's
enclosure! The Ex area has to be temporary de-classified if necessary.

Remarks concerning the display

During normal operation the 2-digit display shows the current gas concentration in
% LEL (00 to 99 or 0.0 to 9.9 % LEL).

Calibration and maintenance

If the calibration or maintenance menu is entered this is indicated by a displayed
point (bottom right) flashing with approx. 1 Hz.

Faults

Faulty states are indicated by alternatively showing 2 horizontal lines and the current
error code (E0 through E8).

Behaviour after switch-on

All the 14 LED segments and both the decimal points are activated for 5 seconds
directly after switching power on. This is a lamp test to make sure that the LED seg-
ments are functioning.
For a further minute the display changes showing two horizontal lines and the cur-
rently measured concentration. During this time the calibration- and maintenance-
menus cannot be entered. After a minute the transmitter switches into normal opera-
tion.
9023810 - 2nd edition - September 2005
q
.
Menu structure
OK
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