Rosemount 3144P, User Manual

Page: 119 / 170

Reference Manual
00809-0100-4021, Rev FB
August 2011
A-5
Rosemount 3144P
Digital Accuracy for Differential Configurations (dual-sensor option,
HART only)
• Sensor types are similar (e.g., both RTDs or both T/Cs): Digital Accuracy =
1.5 times worst case accuracy of either sensor type.
• Sensor types are dissimilar (e.g., one RTD, one T/C): Digital Accuracy =
Sensor 1 Ac Sensor 2 Accuracy.
Ambient Temperature Effect
Table A-1. Ambient Temperature Effect
Transmitters may be installed in locations where the ambient temperature is
between –40 and 85 °C (–40 and 185 °F).
To maintain excellent accuracy performance, each transmitter is individually
characterized over this ambient temperature range at the factory.
Sensor Options
Digital Accuracy per 1.0 °C (1.8 °F)
Change in Ambient
(1)
(1) Change in ambient is in reference to the calibration temperature of the transmitter (20 °C [68 °F]).
Range D/A Effect
(2)
(2) Applies to HART / 4-20 mA devices.
2-, 3-, or 4- Wire RTDs
Pt 100 (

= 0.00385) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Pt 200 (

= 0.00385) 0.0023 °C (0.00414 °F) Entire Sensor Input Range 0.001% of span
Pt 500 (

= 0.00385) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Pt 1000 (

= 0.00385) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Pt 100 (a = 0.003916) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Pt 200 (a = 0.003916) 0.0023 °C (0.00414 °F) Entire Sensor Input Range 0.001% of span
Ni 120 0.0010 °C (0.0018 °F) Entire Sensor Input Range 0.001% of span
Cu 10 0.015 °C (0.027 °F) Entire Sensor Input Range 0.001% of span
Pt 50 (a = 0.00391) 0.003 °C (0.0054 °F) Entire Sensor Input Range 0.001% of span
Pt 100 (a = 0.00391) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Cu 50 (a = 0.00426) 0.003 °C (0.0054 °F) Entire Sensor Input Range 0.001% of span
Cu 50 (a = 0.00428) 0.003 °C (0.0054 °F) Entire Sensor Input Range 0.001% of span
Cu 100 (a = 0.00426) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Cu 100 (a = 0.00428) 0.0015 °C (0.0027 °F) Entire Sensor Input Range 0.001% of span
Thermocouples
Type B 0.014 °C
0.029 °C – (0.0021% of (T – 300))
0.046 °C – (0.0086% of (T – 100)) R

1000 °C
300 °C

R < 1000 °C
100 °C

R < 300 °C
0.001% of span
Type E 0.004 °C + (0.00043% of T) 0.001% of span
Type J 0.004 °C + (0.00029% of T)
0.004 °C + (0.0020% of absolute value T) T

0

°C
T

0

°C
0.001% of span
Type K 0.005 °C + (0.00054% of T)
0.005 °C + (0.0020% of absolute value T) T

0

°C
T

0

°C
0.001% of span
Type N 0.005 °C + (0.00036% of T) All 0.001% of span
Types R 0.015 °C
0.021 °C – (0.0032% of T) T

200

°C
T

200

°C
0.001% of span
Types S 0.015 °C
0.021 °C – (0.0032% of T) T

200

°C
T

200

°C
0.001% of span
Type T 0.005 °C
0.005 °C + (0.0036% of absolute value) T) T

0

°C
T

0

°C
0.001% of span
DIN Type L 0.0054 °C + (0.00029% of T)
0.0054 °C + (0.0025% of absolute value T) T

0

°C
T

0

°C
0.001% of span
DIN Type U 0.0064 °C
0.0064 °C + (0.0043% of absolute value T) T

0

°C
T

0

°C
0.001% of span
Type W5Re/W26Re 0.016 °C
0.023 °C + (0.0036% of T) T

200

°C
T

200

°C
0.001% of span
GOST Type L 0.005 °C
0.005 °C + (0.003% of T) T ³ 0 °C
T < 0 °C 0.001% of span
Millivolt Input
0.00025 mV Entire Sensor Input Range 0.001% of span
2-, 3-, 4-wire Ohm Input
0.007 ohms Entire Sensor Input Range 0.001% of span
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