Emerson 00809-0100-4102 manual Long Term Stability, Dynamic Performance

Reference Manual	Appendix A: Reference Data
00809-0100-4102, Rev AA	May 2013

Long Term Stability

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.

Dynamic Performance

	4 - 20 mA
	(HART	Fieldbus
	protocol)(1)	protocol(3)	Typical HART Transmitter Response Time
Total Response Time (Td + Tc)(2):
2051C, Ranges 2-5:	100 ms	152 ms	Transmitter Output vs. Time
Range 1:	255 ms	307 ms
Range 0:	700 ms	752 ms	Pressure Released
	100 ms	152 ms
2051T:					Td = Dead Time
	Consult factory	Consult factory	Td	Tc
2051H/L:					Tc = Time Constant
			100%
Dead Time (Td)	45 ms (nominal)	97 ms			Response Time = Td+Tc
Update Rate	22 times per	22 times per	36.8%		63.2% of Total
					Step Change
	second	second	0%
				Time
(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)(1)

Models(1)	Line Pressure Effect
2051CD	Zero Error(2)
	±0.125% of URL/100 psi (6,89 bar)
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)
	Span Error
Range 0	±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
	Span Error
All Ranges	±0.1% of reading/1000 psi (68,9 bar)

(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.

(2) Can be calibrated out at line pressure.

Specifications and Reference Data 91