Differential scale
| Synonym | Linear differential scale |
|---|---|
| Definition | A scale that contains numerical values after subtraction between two values of the same kind |
| Description |
Numerical values on a differential scale can be subjected to subtraction and addition, but not division or multiplication Note: An absolute zero point does not exist |
| Value set |
Numerical values between negative infinity and positive infinity (-∞ – ∞) Note: The low and high limits of reportable result ranges are defined for each measurand |
| Example of values |
Temperature of Mr. Smith’s body is 37 °C Base excess of Mr. Smith’s arterial plasma is -5 mmol/L |
| Mathematical operations |
a+b: Two values of same measurand can be added a-b: Two values of same measurand can be added Note: “a” denotes a value at a time point. “b” denotes a value at a different time point than “a”. Example Change of base excess of Mr. Smith’s arterial plasma (Base excess (day 2) – Base excess (day 1)) is +10 mmol/L |
| Reference |
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Contact
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