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Reference Manual
00809-0100-4102, Rev AA
Appendix A: Reference Data
May 2013
Specifications and Reference Data
Long Term Stability
Dynamic Performance
Line Pressure Effect per 1000 psi (6,9 MPa)
(1)
Models Long Term Stability
2051C
Ranges 2-5
±0.125% of URL for 5 years
±50 °F (28 °C) temperature changes, and up to 1000 psi (6,9 MPa) line pressure.
2051CD Low/Draft
Range
Ranges 0-1
±0.2% of URL for 1 year
2051T
Ranges 1-4 ±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
protocol)
(1)
Fieldbus
protocol
(3)
Typical HART Transmitter Response Time
Total Response Time (T
d
+ T
c
)
(2)
:
2051C, Ranges 2-5:
Range 1:
Range 0:
2051T:
2051H/L:
100 ms
255 ms
700 ms
100 ms
Consult factory
152 ms
307 ms
752 ms
152 ms
Consult factory
Dead Time (Td)
45 ms (nominal) 97 ms
Update Rate
22 times per
second
22 times per
second
(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.
Models
(1)
(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
“Compensating for
Line Pressure (Range 4 and Range 5)” on page 70
.
Line Pressure Effect
2051CD Zero Error
(2)
±0.125% of URL/100 psi (6,89 bar)
(2) Can be calibrated out at line pressure.
Range 0
Range 1 ±0.25% of URL/1000 psi (68,9 bar)
Ranges 2-3 ±0.05% of URL/1000 psi (68,9 bar) for line pressures from 0 to 2000 psi (0 to 13,7 MPa)
Range 0
Span Error
±0.15% of reading/100 psi (6,89 bar)
Range 1 ±0.4% of reading/1000 psi (68,9 bar)
Ranges 2-3 ±0.1% of reading/1000 psi (68,9 bar)
2051HD Zero Error
(1)
±0.1% of URL/1000 psi (68,9 bar) for line pressures from 0 to 2000 psi (0 to 13,7 MPa)
All Ranges
All Ranges
Span Error
±0.1% of reading/1000 psi (68,9 bar)
T
c
T
d
T
d
= Dead Time
T
c
= Time Constant
Pressure Released
Response Time = T
d
+T
c
63.2% of Total
Step Change
Time
0%
100%
36.8%
Transmitter Output vs. Time