Emerson Rosemount 2051 Wireless Series Reference Manual page 60

Reference Manual
00809-0100-4102, Rev AA
Long Term Stability
Models
2051C
Ranges 2-5
2051CD Low/Draft
Range
Ranges 0-1
2051T
Ranges 1-4
Dynamic Performance
Total Response Time (T + T
d
2051C, Ranges 2-5:
Range 1:
Range 0:
2051T:
2051H/L:
Dead Time (Td)
Update Rate
(1) Dead time and update rate apply to all models and ranges; analog output only
(2) Nominal total response time at 75 °F (24 °C) reference conditions.
(3) Transmitter fieldbus output only, segment macro-cycle not included.
Line Pressure Effect per 1000 psi (6,9 MPa)
(1)
Models
2051CD
Range 0
Range 1
Ranges 2-3
Range 0
Range 1
Ranges 2-3
2051HD
All Ranges
All Ranges
(1) For zero error specifications for line pressures above 2000 psi (137,9 bar) or line pressure effect specifications for DP Ranges 4-5, see
Line Pressure (Range 4 and Range 5)" on page 50
(2) Can be calibrated out at line pressure.
Specifications and Reference Data
Long Term Stability
±0.125% of URL for 5 years
±50 °F (28 °C) temperature changes, and up to 1000 psi (6,9 MPa) line pressure.
±0.2% of URL for 1 year
±0.125% of URL for 5 years
±50 °F (28 °C) temperature changes, and up to 1000 psi (6,9 MPa) line pressure.
4 - 20 mA
(HART
(1)
protocol)
(2)
) :
c
100 ms
255 ms
700 ms
100 ms
Consult factory
45 ms (nominal)
22 times per
second
Line Pressure Effect
(2)
Zero Error
±0.125% of URL/100 psi (6,89 bar)
±0.25% of URL/1000 psi (68,9 bar)
±0.05% of URL/1000 psi (68,9 bar) for line pressures from 0 to 2000 psi (0 to 13,7 MPa)
Span Error
±0.15% of reading/100 psi (6,89 bar)
±0.4% of reading/1000 psi (68,9 bar)
±0.1% of reading/1000 psi (68,9 bar)
(1)
Zero Error
±0.1% of URL/1000 psi (68,9 bar) for line pressures from 0 to 2000 psi (0 to 13,7 MPa)
Span Error
±0.1% of reading/1000 psi (68,9 bar)
Fieldbus
(3)
protocol Typical HART Transmitter Response Time
152 ms
307 ms
752 ms
Pressure Released
152 ms
Consult factory
100%
97 ms
36.8%
22 times per
second
.
Appendix A: Reference Data
Transmitter Output vs. Time
T = Dead Time
d
T T
d c
T = Time Constant
c
Response Time = T
63.2% of Total
Step Change
0%
Time
(1)
"Compensating for
June 2012
+T
d c
73