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Quick Start Guide
2
Locate the installation point
Locate the primary element installation point. If possible, install the
meter at ground level to allow meter access.
Table 2-1: Straight Pipe Requirements (Distance in Number of
Pipe Diameters)
Upstream (inlet)
side of primary
Downstream (outlet) side of primary
(all disturbances)
(1)
Consult an Emerson representative if a disturbance is not listed.
(2)
Upstream straight pipe run diameters are measured from the upstream
pressure taps of the Rosemount 9195 primary element. Downstream
straight pipe run diameters are measured from the downstream
pressure taps.
(3)
Straight pipe requirements are based on ISO 5167-6 for wedge ratios 0.2
≤ h/D ≤ 0 .6.
8
Type of flow
disturbance
upstream of
flow meter
(1)
Single 90° bend
in the same plane
Three 90° bends
with parallel exit
and outlet
Two or more
90° bends in the
same plane
Concentric
expander
(D/2 to D)
Concentric
reducer
(3D/2 to D)
Partially closed
valve
Pipe tee –
straight run
Pipe tee –
used as elbow or
tee
Typical straight
run pipe
diameters (D)
10
22
15
7
7
10
5
6
5
Emerson.com/Rosemount
November 2023
Straight run
pipe diameters
per ISO
(2)(3)
7
22
21
7
7
15
7
8
6
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