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Reference Manual
00809-0100-4697, Rev EA
October 2011
A-7
Rosemount 848T
Ambient Temperature Effect
Transmitter may be installed in locations where the ambient temperature is between -40 and 85 °C (-40 and 185 °F)
Table 3. Ambient Temperature Effects
NIST Type Accuracy per 1.0 °C (1.8 °F) Change in Ambient Temperature
(1)
C
(1) Change in ambient is in reference to the calibration temperature of the transmitter (20 °C (68 °F) typical from the factory).
Temperature Range (°C)
RTD
Pt 50 ( = 0.00391)
• 0.004 °C (0.0072 °F)
NA
Pt 100 ( = 0.00391)
• 0.002 °C (0.0036 °F)
NA
Pt 100 ( = 0.00385)
• 0.003 °C (0.0054 °F)
NA
Pt 100 ( = 0.003916)
• 0.003 °C (0.0054 °F)
NA
Pt 200 ( = 0.003916)
• 0.004 °C (0.0072 °F)
NA
Pt 200 ( = 0.00385)
• 0.004 °C (0.0072 °F)
NA
Pt 500
• 0.003 °C (0.0054 °F)
NA
Pt 1000
• 0.003 °C (0.0054 °F)
NA
Cu 10
• 0.03 °C (0.054 °F)
NA
Cu 100 (a=428)
• 0.002 °C (0.0036 °F)
NA
Cu 50 (a=428)
• 0.004 °C (.0072 °F)
NA
Cu 100 (a=426)
• 0.002 °C (0.0036 °F)
NA
Cu 50 (a=426)
• 0.004 °C (.0072 °F)
NA
Ni 120
• 0.003 °C (0.0054 °F)
NA
Thermocouple (R = the value of the reading)
Type B
• 0.014 °C
• 0.032 °C - (0.0025% of (R - 300))
• 0.054 °C - (0.011% of (R - 100))
•R 1000
•300 R < 1000
•100 R < 300
Type E
• 0.005 °C + (0.00043% of R) •All
Type J, DIN Type L
• 0.0054 °C + (0.00029% of R)
• 0.0054 °C + (0.0025% of |R|)
•R 0
•R 0
Type K
• 0.0061 °C + (0.00054% of R)
• 0.0061 °C + (0.0025% of |R|)
•R 0
•R 0
Type N
• 0.0068 °C + (0.00036% of R) •All
Type R, Type S
• 0.016 °C
• 0.023 °C - (0.0036% of R)
•R 200
•R 200
Type T, DIN Type U
• 0.0064 °C
• 0.0064 °C + (0.0043% of |R|)
•R 0
•R 0
GOST Type L
• 0.007 °C
• 0.007 °C + (0.003% of IRI)
•R 0
•R 0
Millivolt
• 0.0005 mV
NA
2- and 3-wire Ohm
• 0.0084 ohms
NA
4–20 mA (Rosemount)
• 0.0001 mA
NA
4-20 mA (NAMUR)
• 0.0001 mA
NA