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Emerson 3051S Manuel d'utilisateur Page 46

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46
Rosemount 3051
September 2014
www.rosemount.com
Total performance
Total performance is based on combined errors of reference accuracy, ambient temperature effect, and static pressure effect at
normal operating conditions (70% of span typical reading, 740 psi (51,02 bar) line pressure).
Long term stability
3051CFC_P Compact Orifice Flowmeter – orifice type option P
(2)
Ranges 2-3
= 0.4 ±2.00% of Flow Rate at 8:1 flow turndown
= 0.65 ±2.00% of Flow Rate at 8:1 flow turndown
3051CFP Integral Orifice Flowmeter
Ranges 2-3
<0.1 ±3.00% of Flow Rate at 8:1 flow turndown
0.1< <0.2 ±1.95% of Flow Rate at 8:1 flow turndown
0.2< <0.6 ±1.75% of Flow Rate at 8:1 flow turndown
0.6< <0.8 ±2.15% of Flow Rate at 8:1 flow turndown
(1) Accuracy over range of use is always application dependent. Range 1 flowmeters may experience an additional uncertainty up to 0.9%.
Consult your Emerson Process Management Representative for exact specifications.
(2) Applicable to 2-in. to 12-in. line sizes. For smaller line sizes, see the Rosemount DP Flowmeters and Primary Elements PDS
(00813-0100-4485).
Flow performance - flow reference accuracy
(1)
For ±50 °F (28 °C) temperature changes; 0-100% relative humidity, from 1:1 to 5:1 rangedown
Models Total performance
(1)
(1) For output code W, F and M, total performance is ±0.15% of span.
3051C
Ranges 2-5
± 0.14% of span
3051T
Ranges 1-4
± 0.14% of span
3051L
Ranges 2-4
Use Instrument Toolkit
™
or the QZ option to quantify the total
performance of a remote seal assembly under operating conditions.
Models Long term stability
3051C
Ranges 2-5
±0.2% of URL for 10 years
±50 °F (28 °C) temperature changes, and up to 1000 psi (68,95 bar) line pressure.
3051CD, 3051CG Low/Draft Range
Ranges 0-1
±0.2% of URL for 1 year
3051CA Low Range
Range 1
±0.2% of URL for 10 years
±50 °F (28 °C) temperature changes, and up to 1000 psi (68,95 bar) line pressure.
3051T
Ranges 1-4
±0.2% of URL for 10 years
±50 °F (28 °C) temperature changes, and up to 1000 psi (68,95 bar) line pressure.
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