Siemens ULTRAMAT 23, Manual, Page: 119 / 244

Functions
8.2 Calibration
ULTRAMAT 23
Manual, 3/2016, A5E37100388-003
119
8.2.5.1 Calibration: H2S sensor: Defining the installation
You have to re-enter the date of installation after installing a new sensor.
The adjacent display appears when you select the 'Installation
date' menu item:
Now you can enter the date of installation in the form:
'DD.MM.YYYY'.
Note
Prior to entering the installation date, you must perform a zero point and measuring range
calibration of the H
2
S sensor, otherwise the new date will not be accepted.
8.2.5.2 Calibration: H2S sensor: Calibrating the zero point
You can use this function to re-adjust the zero point of the H
2
S sensor. As the zero gas you
can use:
● Nitrogen
or
● air free of H
2
S.
To do this, navigate as follows: Calibration -> Please enter code -> Calibrate probe ->
Choose component -> H
2
S -> Calibrate zero.
The adjacent display appears.
In the case of analyzers with an internal sample gas pump,
selecting this function switches from the sample gas inlet (inlet
1) to the zero gas inlet (inlet 3).
Calibrate the zero point as follows:
•
Connect zero gas to the analyzer and observe the display.
•
Wait until the displayed value has stabilized.
•
Commence with correction of the zero point by pressing the
<ENTER> key.
•
Exit the calibration by pressing the <ESC> key.
The message "Tolerance not o.k." appears if an error occurs during the calibration.
8.2.5.3 Calibration: H2S sensor: Calibrating the measuring range
You can enter the setpoint and calibrate the sensitivity of the sensor using this function.