Emerson Rosemount 248 Reference Manual page 64

Appendix A: Specifications and reference data
March 2014
Table A-2. Rosemount 248 Transmitter input Options, Accuracy, and Ambient Temperature Effects
Sensor
2-, 3-, 4-wire RTDs
(3)
Pt 100 ( = 0.00385)
(4)
Pt 100 ( = 0.003916)
(3)
Pt 200
(3)
Pt 500
(3)
Pt 1000
(5)
Ni 120
(6)
Cu 10
Cu 50 ( = 0.00428)
Cu 100 ( = 0.00428)
Cu 50 ( = 0.00426)
Cu 100 ( = 0.00426)
PT 50 ( = 0.00391)
PT 100 ( = 0.00391)
(7)
Thermocouples
(8)(9)
Type B
(8)
Type E
(8)
Type J
(8)(10)
Type K
(8)
Type N
(8)
Type R
(8)
Type S
(1) Input ranges are for transmitter only. Actual sensor (RTD or Thermocouple) operating ranges may be more limited. See "Sensor specifications" on page -57
Appendix A: Sensor specifications
(2) Change in ambient is with reference to the calibration temperature of the transmitter at 68 °F (20 °C) from factory.
(3) IEC 751, 1995.
(4) JIS 1604, 1981.
(5) Edison Curve No. 7.
(6) Edison Copper Winding No. 15.
(7) Total accuracy for thermocouple measurement: sum of accuracy +0.5 °C.
(8) NIST Monograph 175, IEC 584.
(9) Fixed accuracy for NIST Type B is ±5.4 °F (±3.0 °C) from 212 to 572 °F (100 to 300 °C).
(10) Fixed accuracy for NIST Type K is ±1.3 °F (±0.7 °C) from -292 to -130 °F (-130 to -90 °C).
Transmitter accuracy example
When using a Pt 100 (a = 0.00385) sensor input with a 0 to 100 °C span: Accuracy would be
±0.2 °C.
56
Transmitter input ranges
°C °F
–200 to 850 –328 to 1562
11
–200 to 645 –328 to
–200 to 850 –328 to 1562
–200 to 850 –328 to 1562
–200 to 300 –328 to 572
–70 to 300 –94 to 572
–50 to 250 –58 to 482
-185 to 200 -365 to 392
-185 to 200 -365 to 392
-50 to 200 -122 to 392
-50 to 200 -122 to 392
-200 to 550 -392 to 1022
-200 to 550 -392 to 1022
100 to 1820 212 to 3308
–50 to 1000 –58 to 1832
–180 to 760 –292 to 1400
–180 to 1372 –292 to 2502
–200 to 1300 –328 to 2372
0 to 1768 32 to 3214
0 to 1768 32 to 3214
for temperature ranges.
(1)
Accuracy
Fixed span
0.2 °C (0.36 °F) ±0.1
93 0.2 °C (0.36 °F) ±0.1
1.17 °C (2.11 °F) ±0.1
0.47 °C (0.85 °F) ±0.1
0.23 °C (0.41 °F) ±0.1
0.16 °C (0.29 °F) ±0.1
2 °C (3.60 °F) ±0.1
0.68 °C (1.22 °F) ±0.1
0.34 °C (0.61 °F) ±0.1
0.68 °C (1.22 °F) ±0.1
0.34 °C (0.61 °F) ±0.1
0.40 °C (0.72 °F) ±0.1
0.20 °C (0.36 °F) ±0.1
1.5 °C (2.70 °F) ±0.1
0.4 °C (0.72 °F) ±0.1
0.5 °C (0.90 °F) ±0.1
0.5 °C (0.90 °F) ±0.1
0.8 °C (1.44 °F) ±0.1
1.2 °C (2.16 °F) ±0.1
1 °C (1.80 °F) ±0.1
Reference Manual
00809-0100-4825, Rev CB
Temperature effects per
1.0 °C (1.8 °F) change in
ambient temperature
% of
Fixed
0.006 °C (0.011 °F)
0.006 °C (0.011 °F)
0.018 °C (0.032 °F)
0.018 °C (0.032 °F)
0.010 °C (0.018 °F)
0.004 °C (0.007 °F)
0.06 °C (0.108 °F)
0.012 °C (0.022 °F)
0.006 °C (0.011 °F)
0.012 °C (0.022 °F)
0.006 °C (0.011 °F)
0.012 °C (0.022 °F)
0.006 °C (0.011 °F)
0.056 °C (0.101 °F)
0.016 °C (0.029 °F)
0.016 °C (0.029 °F)
0.02 °C (0.036 °F)
0.02 °C (0.036 °F)
0.06 °C (0.108 °F)
0.06 °C (0.108 °F)
Specifications and Reference Data
(2)
% of
span
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004
±0.004