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Operation
4.3 Analyzer Functions
LDS 6
Operating Instructions, 01/2009, A5E00295894-05
51
4.3.3
Calibration
The LDS 6 is calibrated when delivered and does not normally require on site recalibration.
Please consult Siemens support if recalibration is needed.
CAUTION
Never use functions 20 and 21 without having contacted Siemens service staff first.
Inappropriate use of these functions may seriously affect the accuracy of the analyzer.
Access to the calibration functions requires access code 3.
20 Zero Calibration
Calibrate
Zero Calibration Active
20 Zero Calib. Ch1 NH
3
Act. Val. 0.12 mg/Nm
3
You can use this function to calibrate the zero of a measuring range. When zero
calibration is triggered the current measurement value is stored. This value will
thereafter always be subtracted from the measurement signal.
Only start the calibration, when the measured value is stable.
The status of the calibration will be shown at the bottom of the screen.
21 Span Calibration
Act. Val. 288.1 mg/Nm
3
Setpoint 293.0 mg/Nm
3
21 Span Calib. Ch1 NH
3
Calibrate
You can use this function to calibrate the span setpoint of a measuring range. This
display lists the setpoint and the current value.
The calibration is triggered by pressing the third soft key. The current value is then set
to coincide with the set point.