CONFIGURATION
Part. No. 2400M2501_6 Touchpoint Pro
73 Technical Handbook
9.2.20 Calibration Signal Settings
Access Level: Engineer
Note: These settings refer to the range of signal values from the sensor over which calibration will be permitted, and are
used to avoid incorrect calibration e.g. due to incorrect application of gas.
During calibration, the ‘Zero Signal Too High’ warning is
set if the zero signal exceeds the Maximum Zero Offset
During calibration, the ‘Zero Signal Too Low’ warning is
set if the zero signal is below the Minimum Zero Offset
During calibration, the ‘Calibration Signal Too High’
warning will be set if the span signal exceeds the
Maximum Span Signal.
During calibration, the ‘Calibration Signal Too Low’
warning will be set if the span signal is below the Minimum
Span Signal
9.2.21 Calibration Span Gas Settings
Access Level: Engineer
These settings refer to the range of gas concentration values that can be used for span calibration, and are used to ensure
that the sensor is calibrated at an appropriate level.
The Maximum Span Gas Concentration and Minimum Span Gas Concentration are the maximum and minimum values
that can be entered into the Span Gas Concentration field during calibration.
The Default Span Gas Concentration is the value initially displayed in the Span Gas Concentration field. This may be
changed by the user during calibration to match the actual gas concentration used.
Maximum Span Gas
Concentration
Gas Range Max- 0.20 * (Gas
Range Max-Gas Range Min)
Minimum Span Gas
Concentration
Gas Range Min + MN * (Gas
Range Max - Gas Range Min)
Gas Range Min + 0.15 * (Gas
Range Max - Gas Range Min)
Gas Range Max - 0.20 * (Gas
Range Max - Gas Range Min)
Default Span Gas
Concentration
Gas Range Max - NN * (Gas
Range Max - Gas Range Min)
Gas Range Max - 0.70 * (Gas
Range Max-Gas Range Min)
Note: MN and NN depend on the sensor type selected.