Cu - Sensor Current Adjustment; Dp - Set Decimal Point; So - Display Software Version - Dräger PEX 3000 Gebrauchsanweisung

Maintenance Menu
CU – Sensor Current Adjustment
This function is used to adjust the sensor current if the necessary sensor current is
different from the ex-factory-adjustment.
Ex-factory values are:
Type XTR 0000, XTR 0001, XTR 0090 and XTR 0091:
Type XTR 0010 and XTR 0011:
Adjustment of the sensor current must be followed by calibration of zero point and
span!
 Navigate by means of keys ▲ or ▼ until the display shows CU ("CUrrent") and
press keys (▲+▼) to enter.
— The display shows the last two digits of the currently adjusted sensor current,
e.g. the display shows "70" for a sensor current of 270 mA.
 By means of key ▲ or key ▼ the sensor current can be adjusted between
240 mA (display shows "40") and 300 mA (display shows "00") in steps of 1 mA.
Pressing the keys for longer activates a repeat function.
 Press keys (▲+▼) to up-dated the sensor current to the value displayed. The
value is saved and this function is terminated. The display shows CU again.
 Press key ▲ three times to step back into measurement mode.
dP – Set Decimal Point
This function is used to set the decimal point in case of using an DrägerSensor
LC M (Type XTR 0010 or XTR 0011) or remote-transmitter Type XTR 0090 and
XTR 0091 with sensing head SE Ex LC ... DD) with a measuring range 0 to
9.9 %LEL.
The decimal point is only displayed for gas-concentrations in %LEL.
 Navigate by means of keys ▲ or ▼ until the display shows dP ("decimal Point")
and press keys (▲+▼) to enter. The decimal point is displayed if already
activated. The flashing point on the right bottom is switched off.
 Switch the decimal points on or off by means of key ▲ or ▼.
 Press (▲+▼) to save the up-dated status and to terminate this function. The
display shows dP again with a flashing point on the right bottom. An activated
decimal point is not displayed.
 Press key ▲ four times to step back into measurement mode.
So – Display Software Version
To document necessary software modifications with this function the current
software version can be displayed.
 Navigate by means of keys ▲ or ▼ until the display shows So ("Software") and
press keys (▲+▼) to enter.
— The display shows a figure between "01" and "99", indicating the current
software version.
 Press keys (▲+▼) to terminate this function. The display shows So again.
 Press key ▲ five times to step back into measurement mode.
42
255 mA
276 mA
WARNING