Emerson Rosemount 848T, Reference Manual, Page: 70 / 136

62
Reference Manual
00809-0100-4697, Rev GA
Appendix A: Reference Data
November 2014
Reference Data
Table A-2. Analog Sensors
A.4.9 Ambient temperature effect
Transmitter may be installed in locations where the ambient temperature is between -40 and
85 °C (-40 and 185 °F).
A.4.10 Ambient temperature effects
Sensor option Alarm levels Accuracy
4–20mA (Rosemount Standard) 3.9 to 20.8 mA ± 0.01mA
4–20mA (NAMUR) 3.8 to 20.5 mA ± 0.01mA
NIST type Accuracy per 1.0 °C (1.8 °F) change in ambient temperature
(1)
° C Temperature range (°C)
RTD
Pt 50 (
α
= 0.00391)
• 0.004 °C (0.0072 °F)
N/A
Pt 100 (
α
= 0.00391)
• 0.002 °C (0.0036 °F)
N/A
Pt 100 (
α
= 0.00385)
• 0.003 °C (0.0054 °F)
N/A
Pt 100 (
α
= 0.003916)
• 0.003 °C (0.0054 °F)
N/A
Pt 200 (
α
= 0.003916)
• 0.004 °C (0.0072 °F)
N/A
Pt 200 (
α
= 0.00385)
• 0.004 °C (0.0072 °F)
N/A
Pt 500
• 0.003 °C (0.0054 °F)
N/A
Pt 1000
• 0.003 °C (0.0054 °F)
N/A
Cu 10
• 0.03 °C (0.054 °F)
N/A
Cu 100 (a=428)
• 0.002 °C (0.0036 °F)
N/A
Cu 50 (a=428)
• 0.004 °C (.0072 °F)
N/A
Cu 100 (a=426)
• 0.002 °C (0.0036 °F)
N/A
Cu 50 (a=426)
• 0.004 °C (.0072 °F)
N/A
Ni 120
• 0.003 °C (0.0054 °F)
N/A
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