Coefficients
Certificate Value
R(.01)
Rtpw
a
a5, a6, a7, a8, a9,
a10, or a11
b
b5, b6, b7, b8 or b9
c
c6 or c7
d
d
a4
a4 or a5
b4
b4 or b5
Consider the following examples.
Example 1:
A PRT was calibrated to ITS-90 and its calibration certificate states values for
coefficients R(273.16K), a4, b4, a8, and b8. Set the instrument's coefficients to
the certificate values as follows.
Coefficients
Certificate Value
R(.01)
R(273.16K)
a
a8
b
b8
c
0.0
d
0.0
a4
a4
b4
b4
Example 2:
A PRT was calibrated to ITS-90 and its calibration certificate states values for
coefficients R(273.16K), a5, and b5. Set the instrument's coefficients to the cer-
tificate values as follows.
1522 Handheld Thermometer Readout
User’s Guide
42