Answer Posted / ayub

Zero same meaning with LRV, but Span sometimes not only URV but Span is URV minus LRV, why because sometimes the range of a equipment its start from minus to positive.
eg: Range cal by designer -75 to 77 mmH2O
So, Zero or LRV is -75 mmH2O
But, Span or URV is 150 mmH2O, its come from URV - LRV

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䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ

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