Fluke 8508A User Manual page 60

8508A
Users Manual
Select the conversion algorithm to be applied. This characteristic cannot be modified via
the
active conversion algorithm.
SPRT ITS90
cvd-}
cvd-A
cvd-dflt
Coefficient Entry for a New PROBE
On selection of a conversion method the algorithm specific coefficients are set to default
values. The subsequent menus to modify these coefficients are conversion specific. The
default value for the coefficient may be entered with a labeled softkey.
SPRT ITS90
3-26
. A measurement annunciator in the left-hand display indicates the
Edit capability
This algorithm converts resistance to temperature according to the ITS-90
specifications for SPRTs. For details see the NIST Technical Note 1265,
Guidelines for Realizing the International Temperature Scale of 1990. The
user-defined parameters for the ITS-90 conversion include two subranges
which are entered in subsequent conversion specific menus.
This algorithm converts resistance to temperature using the Callender-Van
Dusen equations. The user-defined parameters are supplied in the
Alpha( ), Delta( ), and Beta( ) format and are entered in subsequent
conversion specific menus.
This algorithm converts resistance to temperature using the Callender-Van
Dusen equations. The user-defined parameters are supplied A, B, C
coefficients and are entered in subsequent conversion specific menus.
The coefficients Alpha( ), Delta( ), Beta( ) and A, B, C
belong to reciprocally related polynomial expressions. Either
may be used according to preference or available data.
This algorithm converts resistance to temperature using the Callender-Van
Dusen equations. The only user-defined parameter is the R
in a subsequent conversion specific menu. The other coefficients are
defaulted to A = 3.9083E-3, B = -5.775E-7, C = -4.183E-12.
Conversion Menu
Note
Coefficient Menus
adj110f.eps
value entered
0
adj111f.eps