Long Term Stability; Dynamic Performance; Line Pressure Effect Per 1000 Psi (6,9 Mpa - Emerson Rosemount 2051 Reference Manual

Rosemount 2051

Long Term Stability

Models
(1)
2051C
Ranges 2-5 ±0.1% of URL for 2 years
2051CD
Range 1 ±0.2% of URL for 1 year
(1)
2051T
Ranges 1-5 ±0.1% of URL for 2 years
(1) Measured at reference conditions after exposure to temperature changes of up to ±50 °F (28 °C), and line pressure changes up to 1000 psi
(6,9 mPa).

Dynamic Performance

Total Response Time (T
2051C, Range 3-5:
Range 1:
Range 2:
2051L:
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)
For line pressures above 2000 psi (13,7 MPa) and Ranges 4-5, see user manual (Rosemount publication number 00809-0100-4101).
Models
2051CD
Ranges 2-3
Range 1 ±0.5% of URL/1000 psi (68,9 bar)
Ranges 2-3 ±0.1% of reading/1000 psi (68,9 bar)
Range 1 ±0.4% of reading/1000 psi (68,9 bar)
(1) Can be calibrated out at line pressure.
A-2
Standard
(1)
4 - 20 mA HART
1-5 Vdc HART Lower Power
(2)
+ T ) :
d c
115 milliseconds
270 milliseconds
130 milliseconds
2051T: 100 milliseconds
See Instrument Toolkit
60 milliseconds (nominal)
22 times per second
Line Pressure Effect
(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
Performance Option, P8
±0.125% of URL for 5 years
±0.125% of URL for 5 years
(1) (3)
Fieldbus
152 milliseconds
307 milliseconds
152 milliseconds
152 milliseconds
®
See Instrument
Toolkit
97 milliseconds
22 times per second
Reference Manual
00809-0100-4101, Rev AA
Typical HART Transmitter Response Time
Transmitter Output vs. Time
Pressure Released
T = Dead Time
d
T T
T = Time Constant
d c
c
100%
Response Time = T
63.2% of Total
36.8%
Step Change
0%
Time
July 2008
+T
d c