Emerson 848T manual Accuracy, Input Ranges, Sensor Option Sensor Reference 3-Wire RTDs

Reference Manual

00809-0100-4697, Rev EA October 2011

Accuracy

Rosemount 848T

Table 1. Input Options/Accuracy

			Input Ranges			Accuracy Over Range(s)
Sensor Option		Sensor Reference	°C	°F		°C	°F
2- and 3-Wire RTDs
Pt 50 (	= 0.00391)	GOST 6651-94	–200 to 550	–328 to	1022	± 0.57	± 1.03
Pt 100 (	= 0.00391)	GOST 6651-94	–200 to 550	–328 to	1022	± 0.28	± 0.50
Pt 100 (	= 0.00385)	IEC 751; = 0.00385, 1995	–200 to 850	–328 to	1562	± 0.30	± 0.54
Pt 100 (	= 0.003916)	JIS 1604, 1981	–200 to 645	–328 to 1193		± 0.30	± 0.54
Pt 200 (	= 0.00385)	IEC 751; = 0.00385, 1995	–200 to 850	–328 to	1562	± 0.54	± 0.98
Pt 200 (	= 0.003916)	JIS 1604; = 0.003916, 1981	–200 to 645	–328 to 1193		± 0.54	± 0.98
Pt 500		IEC 751; = 0.00385, 1995	–200 to 850	–328 to	1562	± 0.38	± 0.68
Pt 1000		IEC 751; = 0.00385, 1995	–200 to 300	–328 to 572		± 0.40	± 0.72
Ni 120		Edison Curve No. 7	–70 to 300	–94 to	572	± 0.30	± 0.54
Cu 10		Edison Copper Winding No. 15	–50 to 250	–58 to	482	± 3.20	± 5.76
Cu 100 (a=428)		GOST 6651-94	-185 to 200	-365 to 392		± 0.48	±0.86
Cu 50 (a=428)		GOST 6651-94	-185 to 200	-365 to 392		± 0.96	±1.73
Cu 100 (a=426)		GOST 6651-94	-50 to 200	-122 to 392		± 0.48	±0.86
Cu 50 (a=426)		GOST 6651-94	-50 to 200	-122 to 392		± 0.96	±1.73
Thermocouples—Cold Junction Adds +		0.5 °C to Listed Accuracy
NIST Type B (Accuracy varies		NIST Monograph 175	100 to 300	212 to	572	± 6.00	± 10.80
according to input range)			301 to 1820	573 to 3308		± 1.54	± 2.78
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
Multipoint Sensors(2)

(1)Requires the S002 option code.

(2)Multipoint (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 multipoint sensor chosen. For more information, contact your local Emerson representative.

Differential Configuration Notes

Differential capability exists between any two sensor types.

For all differential configurations, the input range is X to Y where

Accuracy for Differential Configurations:

X = Sensor A minimum - Sensor B max. Y = Sensor A maximum - Sensor B min.

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 Accuracy + Sensor 2 Accuracy.

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