Emerson Rosemount 1595, Справочное руководство

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Reference Manual
00809-0100-4828, Rev EA
November 2007
Rosemount 1595
2-4
Liquid or Steam in Vertical Pipes
Mount the transmitter below the pipe with the instrument lines sloping up.
Figure 2-4. Liquid and Steam in
Vertical Pipes
1595 Straight Pipe
Requirements
Use the appropriate lengths of straight pipe upstream and downstream of the
1595 to minimize the effects of moderate flow disturbances in the pipe.
NOTE
The Rosemount 1595 can be used with Rosemount 1496 Orifice Flange
Unions and Rosemount 1497 Meter Sections. For product offering see
document number 00813-0100-4792.
FLOW
Table 2-1. 1595 Straight Pipe Requirements
(1)
(1) Consult an Emerson Process Management representative if the type of disturance is not listed.
Beta 0.20 0.40 0.65
Up
stream (inlet)
side of primary
Single 90° bend or tee 2 2 2
Two or more 90 ° bends in the same plane 2 2 2
Two or more 90° bends in different plane 2 2 2
Up to 10° of swirl
(2)
(2) Not applicable in line sizes greater than 24-in. (600 mm).
Pressure Tap Orientation
Orient the 1595 Conditioning Orifice Plate so that the pressure taps are
centered between any 2 (of 4) orifice bore holes. In addition, the pressure
taps should be located at 90° to the plane of the last elbow.
Centering Requirements
The 1595 should be installed so that it is centered in the pipes as
recommended by ISO-5167.
2 2 2
Reducer (1 line size)
(2)
2 2 2
Butterfly valve (75% to 100% open)
(2)
2 2 N/A
Downstream (outlet) side of primary
2 2 2