What is a reference scale?
What is a reference scale? |
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The scale on a moisture meter may not always be in percentage form – some meters have reference scales instead. | |||
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A reference scale does not measure a unit. Instead it gives you comparable readings, in numerical form, using a set range of numbers. | |||
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The readings given on a reference scale are to be compared to each other, so it is beneficial if you have a known ‘wet’ and/or ‘dry’ source to begin your comparisons. | |||
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For instance, the reference scale could run from zero to one hundred. A reading of 22 does not necessarily mean there is 22% water, but allows you to compare to a reading of say 35. You now know that the first item has a lower moisture content than the second. | |||
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A reference scale does not need to be from zero to one hundred, it could be from zero to three hundred. | |||
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So, for example, if you have four pieces of wood, A, B, C and D, and the readings were as follows:
A. 106 B. 164 C. 97 D. 119 These can now be ordered C, A, D, B, driest to wettest, and if A was your known ‘dry’ piece then D and especially B need further drying. |
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