Dynamic Performance; A.1.4 Dynamic Performance - Emerson Rosemount 2051 Reference Manual

Reference Manual
00809-0300-4101, Rev BB
Long-term stability
±50 °F (28 °C) temperature changes and up to 1000 psi (6,9 MPa) line pressure.
Models Standard
2051C
Range 1 (CD) ±0.2% of URL for 1 year
Ranges 2–5 ±0.1% of URL for 3 years
2051T
Ranges 1–5 ±0.1% of URL for 3 years

A.1.4 Dynamic performance

4–20 mA HART
1–5 Vdc HART
Low Power
Total response time (T + T
d
2051C, Range 3–5: 115 ms
Range 1: 270 ms
Range 2: 130 ms
2051T: 100 ms
2051L: See Instrument Toolkit
Dead time (T ) 60 ms (nominal)
d
(4)
Update rate 22 times per second
1. Dead time and update rate apply to all models and ranges; analog output only.
2. Transducer Block response time, Analog Input block execution time not included.
3. Nominal total response time at 75 °F (24 °C) reference conditions.
4. Does not apply to wireless (output code X). See
Line pressure effect per 1000 psi (6,9 MPa)
For line pressures above 2000 psi (13,7 MPa) and Ranges
4–5, see Rosemount 2051
Rosemount 2051 Reference Manual
Rosemount 2051 Reference Manual
Fieldbus, and Rosemount 2051
PA.
Models Line pressure effect
2051CD,
Zero Error
2051CF
±0.25% of URL/
Range 1
1000 psi (68,9 bar)
±0.05% of URL/
1000 psi (68,9 bar)
Ranges 2–3 for line pressures
from 0 to 2000 psi
(0 to 13,7 MPa)
1. Can be calibrated out at line pressure.
Specifications and Reference Data
High performance option, P8
±0.125% of URL for 5 years
±0.125% of URL for 5 years
(1)
F
OUNDATION
PROFIBUS PA Protocols
(3)
) :
c
152 ms
307 ms
152 ms
152 ms
™
See Instrument Toolkit
97 ms
22 times per second
"Wireless (output code X)" on page 67
Reference Manual for HART,
for WirelessHART,
for F
OUNDATION
Reference Manual PROFIBUS
(1)
Span Error
±0.4% of reading/
1,000 psi (68,9 bar)
±0.1% of reading/
1,000 psi (68,9 bar)
Specifications and Reference Data
Fieldbus and Typical HART transmitter response
(2)
time
Pressure released
100%
36.8%
0%
for wireless update rate.
Ambient temperature effect per 50 °F (28 °C)
Models Ambient temperature effect
2051C, 2051CF
±(0.025% URL + 0.125% span)
from 1:1 to 5:1
Ranges 2–5
±(0.05% URL + 0.25% span)
from 5:1 to 100:1
Range 1 ±(0.1% URL + 0.25% span) from 1:1 to 30:1
2051T
±(0.05% URL + 0.25% span)
from 1:1 to 30:1
Range 2–4
±(0.07% URL + 0.25% span)
from 30:1 to 100:1
±(0.05% URL + 0.25% span)
from 1:1 to 10:1
Range 1
±(0.10% URL + 0.25% span)
from 10:1 to 100:1
Range 5 ±(0.1% URL + 0.15% span)
2051L See Instrument Toolkit
November 2016
Transmitter Output vs. Time
= Dead time
T
d
T = Time constant
c
T T
d c Response time = T
63.2% of total
step change
Time
+ T
d c
63