Emerson Rosemount 644 Reference Manual page 110

Appendix A: Specifications and Reference Data
April 2015
Accuracy example
When using a Pt 100 (α = 0.00385) sensor input with a 0 to 100 °C span:
Digital accuracy = ±0.15 °C

D/A accuracy = ±0.03% of 100 °C or ±0.03 °C

Total accuracy = ±0.18 °C

Table A-3. Ambient Temperature Effect
Sensor options Sensor reference
2-, 3-, 4-wire RTDs
Pt 100 (α = 0.00385) IEC 751
Pt 200 (α = 0.00385) IEC 751
Pt 500 (α = 0.00385) IEC 751
Pt 1000 (α = 0.00385) IEC 751
Pt 100 (α = 0.003916) JIS 1604
Pt 200 (α = 0.003916) JIS 1604
Ni 120 Edison Curve No. 7
Edison Copper
Cu 10
Winding No. 15
Pt 50 (α = 0.00391) GOST 6651-94
Pt 100 (α = 0.00391) GOST 6651-94
Cu 50 (α = 0.00426) GOST 6651-94
Cu 50 (α = 0.00428) GOST 6651-94
Cu 100 (α = 0.00426) GOST 6651-94
Cu 100 (α = 0.00428) GOST 6651-94
Thermocouples
NIST Monograph
Type B
175, IEC 584
NIST Monograph
Type E
175, IEC 584
NIST Monograph
Type J
175, IEC 584
NIST Monograph
Type K
175, IEC 584
NIST Monograph
Type N
175, IEC 584
NIST Monograph
Type R
175, IEC 584
NIST Monograph
Type S
175, IEC 584
NIST Monograph
Type T
175, IEC 584
DIN Type L DIN 43710
DIN Type U DIN 43710
Type W5Re/W26Re ASTM E 988-96
100
Temperature effects per 1.0 °C
Input range
(1.8 °F) change in ambient
(°C)
temperature
-200 to 850 0.003 °C (0.0054 °F)
-200 to 850 0.004 °C (0.0072 °F)
-200 to 850 0.003 °C (0.0054 °F)
-200 to 300 0.003 °C (0.0054 °F)
-200 to 645 0.003 °C (0.0054 °F)
-200 to 645 0.004 °C (0.0072 °F)
-70 to 300 0.003 °C (0.0054 °F)
-50 to 250 0.03 °C (0.054 °F)
-200 to 550 0.004 °C (0.0072 °F)
-200 to 550 0.003 °C (0.0054 °F)
-50 to 200 0.008 °C (0.0144 °F)
-185 to 200 0.008 °C (0.0144 °F)
-50 to 200 0.004 °C (0.0072 °F)
-185 to 200 0.004 °C (0.0072 °F)
0.014 °C
0.032 °C – (0.0025% of
100 to 1820
(T – 300)
0.054 °C – (0.011% of (T – 100)
-200 to 1000 0.005 °C + (0.0043% of T)
0.0054 °C + (0.00029%of T)
-180 to 760
0.0054 °C + (0.0025% of absolute
value T)
0.0061 °C + (0.0054% of T)
-180 to 1372
0.0061 °C + (0.0025% of absolute
value T)
-200 to 1300 0.0068 °C + (0.00036% of T)
0.016 °C
0 to 1768
0.023 °C – (0.0036% of T)
0.016 °C
0 to 1768
0.023 °C – (0.0036% of T)
0.0064 °C
-200 to 400
0.0064 °C +(0.0043% of absolute
value T)
0.0054 °C + (0.00029% of T)
-200 to 900
0.0054 °C + (0.0025% of absolute
value T)
0.0064 °C
-200 to 600
0.0064 °C + (0.0043% of absolute
value T)
0.016 °C
0 to 2000
0.023 °C – (0.0036% of T)
00809-0200-4728, Rev RA
Range
(1)
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
Entire Sensor Input Range
T ≥ 1000 °C
300 °C ≤ T < 1000 °C
100 °C ≤ T < 300 °C
All
T ≥ 0 °C
T < 0 °C
T ≥ 0 °C
T < 0 °C
All
T ≥ 200 °C
T < 200 °C
T ≥ 200 °C
T < 200 °C
T ≥ 0 °C
T < 0 °C
T ≥ 0 °C
T < 0 °C
T ≥ 0 °C
T < 0 °C
T ≥ 200 °C
T < 200 °C
Specifications and Reference Data
Reference Manual
(2)
D/A effect
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