Emerson Rosemount 848T, Reference Manual, Page: 69 / 136

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Reference Manual
00809-0100-4697, Rev GA
Appendix A: Reference Data
November 2014
Reference Data
A.4.6 Differential configuration notes
Differential capability exists between any two sensor types.
For all differential configurations, the input range is X to Y where:

X = Sensor A minimum - Sensor B max.

Y = Sensor A maximum - Sensor B min.
A.4.7 Accuracy for differential configurations
If sensor types are similar (for example, both RTDs or both thermocouples), the accuracy = 1.5
times worst case accuracy of either sensor type. If sensor types are dissimilar (for example, one
RTD and one thermocouple), the accuracy = Sensor 1 Ac Sensor 2 Accuracy.
A.4.8 Analog sensors 4–20mA
Two types of 4–20 mA sensors are compatible with the Rosemount 848T. These types must be
ordered with the S002 option code complete with an analog connector kit. The alarm levels,
accuracy for each type are listed in
Table A-2 .
NIST Type E NIST Monograph 175 –200 to 1000 –328 to 1832 ± 0.40 ± 0.72
NIST Type J NIST Monograph 175 –180 to 760 –292 to 1400 ± 0.70 ± 1.26
NIST Type K NIST Monograph 175 –180 to 1372 –292 to 2501 ± 1.00 ± 1.80
NIST Type N
NIST Monograph 175 –200 to 1300 –328 to 2372 ± 1.00 ± 1.80
NIST Type R NIST Monograph 175 0 to 1768 32 to 3214 ± 1.50 ± 2.70
NIST Type S NIST Monograph 175 0 to 1768 32 to 3214 ± 1.40 ± 2.52
NIST Type T NIST Monograph 175 –200 to 400 –328 to 752 ± 0.70 ± 1.26
DIN L
DIN 43710 –200 to 900 –328 to 1652 ± 0.70 ± 1.26
DIN U DIN 43710 –200 to 600 –328 to 1112 ± 0.70 ± 1.26
w5Re26/W26Re ASTME 988-96 0 to 2000 32 to 3632 ± 1.60 ± 2.88
GOST Type L GOST R 8.585-2001 -200 to 800 -392 to 1472 ± 0.71 ± 1.28
Terminal Temperature -50 to 85 -58 to 185 ±3.50 ± 6.30
Ohm Input 0 to 2000 ohms ± 0.90 ohms
Millivolt Input -10 to 100 mV ± 0.05 mV
1000 mV -10 to 1000 mV ± 1.0 mA
4–20 mA (Rosemount)
(1)
4–20 mA ± 0.01 mA
4–20 mA (NAMUR)
(1)
4–20 mA ± 0.01 mA
Multi-point Sensors
(2)
(1) Requires the S002 option code.
(2) Multi-point (up to 8 points) thermocouples and RTDs are available for purchase with the Rosemount 848T. Input ranges and accuracy for these sensors will depend
on the specific multi-point sensor chosen. For more information, contact your local Emerson representative.
Table A-1. Input Options/Accuracy
Sensor option Sensor reference
Input ranges
Accuracy over
range(s)
°C °F °C °F