Siemens ULTRAMAT 23, Manual, Page: 113 / 244

Functions
8.2 Calibration
ULTRAMAT 23
Manual, 3/2016, A5E37100388-003
113
8.2.2.1 Calibration: Infrared measuring range: Set span gas values
The parameters have the following meanings:
•
Total cal.: In the first line of this dialog, you can select either
a total or single calibration.
– ON means that one range is calibrated and that this
calibration is used for the other ranges (total calibration).
– OFF means that each range is calibrated separately
(single calibration, e.g. with different calibration gases).
•
With AUTOCAL: You can define here whether you wish to
carry out an AUTOCAL prior to the calibration procedure
(YES or NO). An AUTOCAL is not necessary if it has
already been carried out shortly before the calibration
procedure, e.g. a calibration procedure has taken place
directly previously.
•
Span1, Span2: Here you can enter the setpoints for the
individual measuring ranges. These are usually the
concentrations of the measured components in the
respective calibration gas. They should be set to a value
which is between 70% and 100% of the full-scale value. If
Total cal.: ON has been selected, the analyzer
automatically uses the setpoint of range 2 for range 1. With
Total cal.: OFF any input is possible between the start-of-
scale and full-scale values of the respective range.
8.2.2.2 Calibration: Infrared measuring range: Start with Range MR 1/2
The analyzer interrupts the current measurement if you call
one of these two dialogs. If the parameter 'With AUTOCAL'
•
was set to OFF, the analyzer expects an immediate flow of
calibration gas;
• if the value is set to ON, an AUTOCAL is carried out prior to
the flow of gas.
The values of the setpoint and actual-value calibrations are
displayed in the first two lines.
If the analyzer recognizes a flow of calibration gas, the display
changes as shown. If the measured value in the second line
remains constant for more than approx. 10 s or does not
change significantly, press the <ENTER> key.