Siemens ULTRAMAT 23, Manual, Page: 116 / 244

Functions
8.2 Calibration
ULTRAMAT 23
116
Manual, 3/2016, A5E37100388-003
The analyzer then compares the setpoint and actual value
(measured value) of the calibration. If the deviation between
the values is within the tolerance, the adjacent message 'o.k.'
is output.
If the actual value deviates by more than approx. 20% from the
setpoint determined in the factory, the message 'not o.k.' ap-
pears instead (no calibration possible). The causes of this
message can include:
•
Incorrectly entered setpoint
•
Calibration gas concentration does not agree with entered
value
•
The flow of calibration gas is insufficient
By pressing the <ESC> key you can exit the calibration procedure.
8.2.4 Calibration: Paramagnetic oxygen sensor
In this menu you can call the following functions for the para-
magnetic oxygen sensor:
•
"AUTOCAL O2 sens."
– YES (factory setting): The zero point or sensitivity of the
paramagnetic oxygen sensor is set with each
AUTOCAL. Selection of zero point or sensitivity is
carried out using the parameter in the 2nd line
'AUTOCAL with N2'.
– NO: No calibration of the paramagnetic oxygen sensor
during an AUTOCAL.
• "AUTOCAL with N2"
– YES: The AUTOCAL is carried out with nitrogen, where
the zero point of the sensor is calibrated.
– NO: (factory setting ) No calibration of the paramagnetic
oxygen sensor during an AUTOCAL
•
"Calib. O2 zero point"
This function is used to calibrate the zero point of the
paramagnetic sensor
• "Calib. O2 range"
This function is used to calibrate the full-scale value or
sensitivity of the paramagnetic sensor and to set the
setpoint.