
1/14/2012
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Reporting Temperature
App
lication Note 42
• Output and Report Temperature in ITS-90
– Calibration Reports show both sets of coeff.
• Use IPTS-68 to compute salinity
– SBE software does this automatically for you
• What is difference?
– IPTS-68 Versus ITS-90…1968 standards vs. 1990
– IT
S-90 (1990) standards include water triple-point and gallium melt cell,
SPRT, and ASL F18 Temperature Bridge
– Sea-Bird software and instrument converts between IPTS-68 and ITS-
90 according to the linear relationship:
T
68
= 1.00024 * T
90
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