Chapter 5 Functional principle
5.1.1 Determining the raw value
The supply of the gas sensor is permanently active. In the measurement cycle (3 sec.), 16 macro
measurements are completed at intervals of 50ms from which an average value is determined
(sample measurement values). These sample measurement values generated from 16 macro
measurements are then averaged over the record interval (configurable, see ""Instrument" tab" on
page 52). The raw value is then determined from this second averaging calculation.
5.1.2 Calculation of the calibrated H2S measurement value
The raw value determined during the previous step is converted into the H2S measurement value by
means of the slope and offset determined during the calibration (see "Calibration process" on page
87). The zero point adjustment (see "Zero point adjustment" on page 94) does not change the
slope, although the offset is set.
Important note: The offset determined during the calibration of the device is changed by the
zero point adjustment.
Min. raw value
A
Max. raw value
B
End of the measuring range
C
Start of the measuring range
D
Raw value
E
Corresponding H2S measurement value for
the raw value
F
Slope determined during the calibration
(see "Calibration process" on page 87)
k
Calib
Offset determined during the calibration
(see "Calibration process" on page 87)
d
Calib
F = k
Calib
* E + d
Calib
Rev. 01
23
Summary of Contents for myDatasensMINI H2S 1000
Page 2: ......
Page 7: ...Chapter 1 Inhaltsverzeichnis_en Chapter 19 Contact information 107 Rev 01 7 ...
Page 8: ......
Page 9: ...Chapter 2 Declaration of conformity Chapter 2 Declaration of conformity Rev 01 9 ...
Page 10: ...2 1 Declaration of conformity Appendix 10 Rev 01 ...
Page 12: ......
Page 20: ......
Page 30: ......
Page 42: ......
Page 76: ......
Page 84: ......
Page 96: ......
Page 98: ......
Page 100: ......
Page 102: ......
Page 104: ......
Page 106: ......