Information On The Display - Dräger PEX 3000 Mode D'emploi

4.3.1

Information on the display

In the measuring mode, the two-digit display shows the currently measured
concentration in %LEL (0 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 two horizontal lines and the
current error code (E0 through E8).
Turn-on behaviour
All 14 LED segments and both points are activated for 5 seconds directly after
turning on. This is a lamp test to make sure that the LED segments are
functioning. Then, the display shows two horizontal lines and the measured
value for approx. one minute before it switches to measuring mode. During this
time the calibration and maintenance menus cannot be accessed.
Dräger PEX 3000
Normal operation (Measuring Mode)
displaying values between 0 and 99 resp. 0 and 9.9
Signal output 4 to 20 mA
long
Key
▼M
(>3 s)
short (>1 s and <3 s)
▲
ZE
Calibration
Zero Point
▼
▲
SP
Calibration
Span
▲
SL Keys Signal output
Test output 4-20 mA ▲+▼ 4.0 mA
▼
▲
CL Keys Signal output
Calibration 4-20 mA ▲+▼ 4.0 mA
▼
▲
CU Tasten Signal output
Adjust sensor current ▲+▼ 3.4 mA
▼
▲
dP Keys Signal output
Set Decimal point ▲+▼ 3.4 mA
▼
▲
So Keys Signal output
Software-Version ▲+▼ 3.4 mA
If there is no key activated within 4 minutes in an arbitrary state the transmitter will automatically switch-over to the normal
operation without saving any data.
Operation
if a fault if the detected
is detected fault is removed
Fault
Display shows E0 to E8
Signal output 1 mA
Keys Signal output Adjustment of
▲+▼ 3.4 mA zero point
Keys Signal output Adjustment of
▲+▼ 3.4 mA span
Calibration Menu
Set signal output
to X mA
Adjustment
signal output
Adjustment of
sensor current
Switch-on/off
decimal point
Display
software version
Maintenance Menu