Dräger P3U - Overview; Submenu Zero Calibration; The Menu Calibration

The menu » Calibration «
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The menu » Calibration «
The menu » Calibration « contains all functions needed for the calibration and adjust-
ment of the installed sensor.
Notes on handling the calibration gas and calibration accessories can be found in
the section "Maintenance" on page 42.
Overview
Submenu » Zero calibration «
The submenu » Zero calibration « contains the functions for calibrating / adjusting
the zero point of the installed sensor.
Zero-point calibration / adjustment
Calibration procedure (using an EC–H
2
S sensor as an example):
● Select the menu items » Calibration «, » Zero calibration « and » EC–H
2
S « in this
order, pressing the » « key after each selection.
— The maintenance signal is transmitted on the analogue interface.
— The message » Supply zero gas with flow rate 500 mL/min" is displayed
● Connect zero gas to the sensor (for some sensors, N
2
must be used – see infor-
mation in the section "Maintenance" on page 42).
● Select » Next « and press the » « key.
— The current value and the expired time are now displayed.
When the displayed value has stabilised:
● Select » Accept value « and press the » « key.
— The message » Zero calibration running « is displayed
— The required value and the actual value are now displayed.
If these are correct as displayed:
Information
Calibration Calibration
Settings Zero calibration
page 56
Zero cal.
page 56
Span calibration
page 57
EC–H
2
S
1)
1)
The sensor shown in the overview serves only as an example and may differ from the sensor actually installed in the unit.
page 56
Auto calibration
page 58
Span calibration
EC–H
2
S
1)
page 57
OK
OK
OK