Emerson 3051S Dokumentacja Strona 134

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12
Reference Manual
00809-0100-4803, Rev DA
Appendix A: Reference Data
April 2013
Specifications and Reference Data
Dynamic PerformanceAmbient Temperature effect
4 - 20 mA (HART
®
)
(1)
(1) Dead time and update rate apply to all models and ranges; analog output only.
Typical Transmitter Response Time
Total Response Time (Td + Tc)
(2)
3051SMV_ _1: DP, SP, & T
3051SMV_ _2: DP & SP:
DP Range 1:
DP Range 2:
DP Range 3:
AP & GP:
3051SMV_ _3: DP & T
3051SMV_ _4: DP:
DP Ranges 2-5:
DP Range 1:
DP Range 0:
(2) Nominal total response time at 75 °F (24 °C) reference conditions.
Ambient Temperature effect
310 milliseconds
170 milliseconds
155 milliseconds
240 milliseconds
145 milliseconds
300 milliseconds
745 milliseconds
Dead Time (Td)
DP:
AP & GP:
Process Temp. RTD Interface:
100 milliseconds
140 milliseconds
1 second
Update Rate
Measured Variables:
DP:
AP & GP:
Process Temp. RTD Interface:
Calculated Variables:
Mass or Volumetric Flow Rate:
Energy Flow Rate:
Totalized Flow:
22 updates per second
11 updates per second
1 update per second
22 updates per second
22 updates per second
1 update per second
Models Ultra
per 50 °F (28 °C)
Classic or Classic MV
per 50 °F (28 °C)
Ultra for Flow
(1)
-40 to 185 °F (-40 to 85 °C)
3051SMV_ _1: Differential Pressure, Static Pressure, & Temperature
3051SMV_ _2: Differential Pressure & Static Pressure
DP Ranges 2 - 3
N/A
± (0.0125% URL + 0.0625% span)
from 1:1 to 5:1;
± (0.025% URL + 0.125% span) for > 5:1
±0.13% reading up to 8:1 DP
turndown from URL;
±[0.13 + 0.0187
(URL/RDG
(4)
)]% reading to
100:1 DP turndown from URL
DP Range 1
N/A
± (0.1% URL + 0.25% Span) from 1:1 to
50:1
N/A
AP and GP
N/A
± (0.0125% URL + 0.0625% Span)
from 1:1 to 10:1;
± (0.025% URL + 0.125% Span) for
>10:1
± (0.009% URL + 0.025%
Span)
from 1:1 to 10:1;
± (0.018% URL + 0.08% Span)
for >10:1
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
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