Sensor Integration and Calibration
50 Hydro-Probe XT User Guide HD0538 Rev: 1.6.0
Poor Moisture Calibration Data
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Poor Moisture Calibration Data
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2.5.1
Calibration inaccuracy is likely to result if:
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Too small a sample of material is used for measuring the moisture content.
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A very small number of calibration points are used (in particular 1 or 2 points).
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The sub-sample tested is not representative of the bulk sample.
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Samples are taken close to the same moisture content, like the calibration graph
shown below (left). A good range is necessary.
•
There is a large scatter in the readings as shown in the calibration graph below
(right). This generally implies an unreliable or inconsistent approach to taking
samples for oven drying or poor sensor positioning with inadequate material flow
over the sensor.
•
If the averaging facility is not used to ensure representative moisture reading for
the entire batch.
Figure 38: Examples of poor material calibration points
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Страница 14: ...Chapter 1 Introduction 14 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
Страница 42: ...Chapter 4 Configuration 42 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
Страница 52: ...Chapter 6 Optimising Sensor and Process Performance 52 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
Страница 58: ...Chapter 7 Sensor diagnostics 58 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
Страница 60: ...Chapter 8 Technical specification 60 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
Страница 66: ...Appendix B Document Cross Reference 66 Hydro Probe XT User Guide HD0538 Rev 1 6 0 ...
