Campbell Scientific CR1000 Measurement and Control System - Manual (Page 255)

Section 7. Installation
255
Table 45. PRTCalc() Type-Code-1 Sensor
IEC 60751:2008 (IEC 751), alpha = 0.00385. Now internationally
adopted and written into standards ASTM E1137-04, JIS 1604:1997,
EN 60751 and others. This type code is also used with probes
compliant with older standards DIN43760, BS1904, and others.
(Reference: IEC 60751. ASTM E1137)
Constant Coefficient
e 1.7584810E-05
f -1.1550000E-06
g 1.7909000E+00
h -2.9236300E+00
i 9.1455000E+00
j 2.5581900E+02
Table 46. PRTCalc() Type-Code-2 Sensor
US Industrial Standard, alpha = 0.00392 (Reference: Logan
Enterprises)
Constant Coefficient
a 3.9786300E-03
d -2.3452400E-06
e 1.8174740E-05
f -1.1726200E-06
g 1.7043690E+00
h -2.7795010E+00
i 8.8078440E+00
j 2.5129740E+02
Table 47. PRTCalc() Type-Code-3 Sensor
US Industrial Standard, alpha = 0.00391 (Reference: OMIL R84
(2003))
Constant Coefficient
a 3.9690000E-03
d -2.3364000E-06
e 1.8089360E-05
f -1.1682000E-06
g 1.7010560E+00
h -2.6953500E+00