Emerson Rosemount 9175 Manuel utilisateur
Quick Start Guide
00825-0100-4175, Rev AB
September 2022
Rosemount™ 9175 Natural Gas Flow
Meter
NOTICE
This guide provides basic guidelines for the Rosemount 9175 Flow Meter. For comprehensive
instructions on configuration, diagnostics, maintenance, service or troubleshooting, refer to
Rosemount 1495, 214C, Single Chamber Orifice Fitting, and appropriate transmitter reference
manuals. The manuals and this guide are also available electronically on Emerson.com/Rosemount.
If the Rosemount 9175 Meter Tube was ordered assembled to a Rosemount Pressure Transmitter,
Manifold or RTD, refer to the following Quick Start Guides for information on configuration and
hazardous locations certifications:
•Rosemount 4088A Quick Start Guide
•Rosemount 4088B Quick Start Guide
•Rosemount 3051SMV Quick Start Guide
•Rosemount 214C Quick Start Guide
Hazardous Area Approvals: This assembly is assembled from certified pieces of equipment. The overall
assembly is subject to inspection by the authority having jurisdiction over the installation.
If the meter was ordered with a wireless transmitter, the battery will be shipped separately due to
freight carrier regulations.
WARNING
Process leaks may cause harm or result in death.
To avoid process leaks, only use gaskets and O-rings designed for the corresponding flange to seal
process connections.
Transmitter electronics maintenance should not be conducted on energized equipment in a
hazardous atmosphere.
Failure to comply with the requirements for intrinsic safety in a hazardous atmosphere could result in
an explosion.
If the process fluid is hazardous, the procedure outlined here should be modified as required.
Failure to do so could result in serious injury to personnel or death.
If the line is pressurized, always open valves slowly.
Failure to do so could result in serious injury to personnel or death.
During installation never lift the meter by the transmitter, RTD, or impulse lines/valves.
Doing so may result in meter damange and serious injury.
Physical access
Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end
users’ equipment. This could be intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and fundamental to protecting your
system. Restrict physical access by unauthorized personnel to protect end users’ assets. This is true for
all systems used within the facility.
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Contents
Before you begin.......................................................................................................................... 5
Locate the installation point......................................................................................................... 6
Orient and install the flow meter.................................................................................................. 7
Trim the transmitter.....................................................................................................................9
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Quick Start Guide 3
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1 Before you begin
Before you begin the installation, consider the temperature limits of the
meter, which are: -20 F (-28.9C) to 160F (71.1C).
Figure 1-1: Exploded View
A. Transmitter
B. RTD assembly
C. Meter tube
D. RTD cable
E. Manifold
F. Stabilized connectors
G. Flow conditioner
The three steps to install and zero the Rosemount 9175 Natural Gas Flow
Meter are described in this guide:
Locate the installation point
Orient and install the flow meter
Trim the transmitter
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Quick Start Guide 5
2 Locate the installation point
Locate the meter installation point. If possible, install the meter at ground
level to allow meter access. No straight run is required for disturbances in
Table 1. In all cases, if additional straight run is available, a best practice is to
position the Rosemount 9175 where 80 percent of the run is upstream of
the meter and 20 percent is downstream. The access point to remove the
orifice plate should face away from any potential interference (i.e. wall or
piping).
Table 2-1: Straight Pipe Requirements (Distance in Number of Pipe
Diameters)
Type of flow distrubance
upstream of flow
meter(1)
Diameters of straight
pipe run needed(2)
Upstream (inlet) side of
primary
Single 90° bends in the
same plane
0
Two or more 90° bends in
the same plane
0
Two or more 90° bends in
different planes
0
Up to 10° of swirl 0
Reducer (One line size) 0
Downstream (outlet) side of primary (all disturbances) 0
(1) Consult an Emerson representative if a disturbance is not listed.
(2) Straight pipe lengths are measured from the upstream and downstream flanges
of the Rosemount 9175. A zero diameter requirement implies that the meter can
be installed directly adjacent to a disturbance.
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3 Orient and install the flow meter
The flow meter is installed with the electronics above the pipe, within 45
degrees from vertical. It can be specified in a left hand or right hand
configuration.
The flow meter must be oriented with the flow arrow pointing in the
direction of flow. Otherwise, the meter will produce erroneous readings. See
Figure 3-1. The orifice plate should be installed in an orientation consistent
with the flow arrow on the meter body. The bevel should be oriented
downstream.
Figure 3-1: Flow Direction
1. Lift the meter by using straps on the body of the meter. Follow local
guidelines on lifting safety. Do not lift the meter by the stabilized
connectors or the transmitter body. Ensure meter is secured
correctly within straps. If not secured correctly, the meter may rotate
during lifting operations.
2. Install the flanged ends into the process pipe as shown in Figure 3-2.
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Quick Start Guide 7
Figure 3-2: Installed Meter
3. Use the appropriate studs, nuts, gaskets and torque spec for the
given flange size, rating and process conditions. Tighten the nuts
following a star pattern. See Figure 3-3.
Figure 3-3: Flange Bolting
8 bolt holes 4 bolt holes
Once the flow meter is installed in the line, wire the transmitter
electronics into the control system.
WARNING
Perform this task in an environment free of hazardous or combustible
gases.
Failure to comply with the requirements for intrinsic safety in a hazardous
atmosphere could result in an explosion.
For orifice plate removal and installation, please refer to the single chamber
orifice fitting manual. Gaskets and O-rings should be replaced when the
Rosemount 9175 is disassembled.
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4 Trim the transmitter
Before the unit is put in service, a transmitter zero trim should be performed
at normal line pressure.
In normal operation, the two isolate (block) valves between the process
ports and the transmitter will be open, and the equalize valves will be closed.
Vent valves may be open or closed.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (closed)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (open)
I. (Plugged)
Procedure
1. To zero trim the transmitter, first close the isolate valve on the low
pressure (downstream) side of the transmitter and the drain vent
valve.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (closed)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (closed)
I. (Plugged)
2. Open the equalize valve on the high pressure (upstream) side of the
transmitter.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (open)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (closed)
I. (Plugged)
3. Open the equalize valve on the low pressure (downstream) side of
the transmitter.
The manifold is now in the proper configuration for zeroing the
transmitter.
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Quick Start Guide 9
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (open)
E. Equalize (open)
F. Drain vent (closed)
G. Process
H. Isolate (closed)
I. (Plugged)
4. Perform the zero trim. Refer to the transmitter Quick Start Guide for
more information.
5. After zeroing the transmitter, close the equalize valve on the low
pressure (downstream) side of the transmitter.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (open)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (closed)
I. (Plugged)
6. Close the equalize valve on the high pressure (upstream) side.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (closed)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (closed)
I. (Plugged)
7. Finally, to return the transmitter to service, open the low side isolate
valve and drain vent valve.
The drain vent valve can remain open or closed during operation.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (closed)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (open)
I. (Plugged)
The flow meter assembly is now ready for service.
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10 Emerson.com/Rosemount
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