91

Reference Manual

00809-0100-4102, Rev AA
Appendix A: Reference Data
May 2013
Specifications and Reference Data
Long Term StabilityDynamic 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 (Td + Tc)(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

LinePressure (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)
Tc
Td
Td = Dead Time
Tc = Time Constant
Pressure Released
Response Time = Td+Tc
63.2% of Total
Step Change
Time
0%
100%
36.8%
Transmitter Output vs. Time