Technical content subject to change without notice.
CUSTOMER NOTICE FOR OXYGEN SERVICE! Unless you have specifically ordered optional
cleaning, this flow meter may not be fit for oxygen service. Some models can only be properly
O
2
cleaned during the manufacturing process. GE Measurement & Control is not liable for any damage
or personal injury, whatsoever, resulting from the use of the MV80 or MV 82 standard mass flow
meters for oxygen gas.
ii
Preface
Information Paragraphs
Note:These paragraphs provide information that provides a deeper understanding of the situation, but is not
essential to the proper completion of the instructions.
IMPORTANT:These paragraphs provide information that emphasizes instructions that are essential to proper setup of
the equipment. Failure to follow these instructions carefully may cause unreliable performance.
CAUTION!This symbol indicates a risk of potential minor personal injury and/or severe damage to
the equipment, unless these instructions are followed carefully.
WARNING!This symbol indicates a risk of potential serious personal injury, unless these
instructions are followed carefully.
Safety Issues
WARNING!It is the responsibility of the user to make sure all local, county, state and national
codes, regulations, rules and laws related to safety and safe operating conditions are met for each
installation. The safety of any system incorporating the equipment is the responsibility of the
assembler of the system.
Auxiliary Equipment
Local Safety Standards
The user must make sure that he operates all auxiliary equipment in accordance with local codes, standards,
regulations, or laws applicable to safety.
Working Area
WARNING!Auxiliary equipment may have both manual and automatic modes of operation. As
equipment can move suddenly and without warning, do not enter the work cell of this equipment
during automatic operation, and do not enter the work envelope of this equipment during manual
operation. If you do, serious injury can result.
WARNING!Make sure that power to the auxiliary equipment is turned OFF and locked out before
you perform maintenance procedures on the equipment.
PanaFlow™ MV80 & MV82 User’s Manualiii
Preface
Qualification of Personnel
Make sure that all personnel have manufacturer-approved training applicable to the auxiliary equipment.
Personal Safety Equipment
Make sure that operators and maintenance personnel have all safety equipment applicable to the auxiliary equipment.
Examples include safety glasses, protective headgear, safety shoes, etc.
Unauthorized Operation
Make sure that unauthorized personnel cannot gain access to the operation of the equipment.
Environmental Compliance
Waste Electrical and Electronic Equipment (WEEE) Directive
GE Measurement & Control is an active participant in Europe’s Waste Electrical and Electronic Equipment (WEEE)
take-back initiative, directive 2012/19/EU.
The equipment that you bought has required the extraction and use of natural resources for its production. It may
contain hazardous substances that could impact health and the environment.
In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural
resources, we encourage you to use the appropriate take-back systems. Those systems will reuse or recycle most of the
materials of your end life equipment in a sound way.
The crossed-out wheeled bin symbol invites you to use those systems.
If you need more information on the collection, reuse and recycling systems, please contact your local or regional
waste administration.
Visit www.gemeasurement.com/environmental-health-safety-ehs
information about this initiative.
The GE PanaFlow™ MV80 & MV82 Vortex Flowmeters provide a reliable solution for process flow measurement.
From a single entry point in the pipeline, MV80 & MV82 meters offer precise measurements of mass or volumetric
flow rates.
1.1.1Multi-Parameter Mass Flowmeters
Mass flowmeters utilize three primary sensing elements: a vortex shedding velocity sensor, an RTD temperature sensor
and a solid state pressure sensor to measure the mass flow rate of gases, liquids, and steam.
Meters are available as loop powered devices or with up to three 4-20 mA analog output signals for monitoring your
choice of the five process variables (mass flow, volumetric flow, temperature, pressure and fluid density). The Energy
Monitoring option permits real-time calculation of energy consumption for a facility or process.
1.1.2Volumetric Flowmeters
The primary sensing element of a volumetric flowmeter is a vortex shedding velocity sensor. The analog 4-20 mA
output signal offers your choice of volumetric or mass flow rate. Mass flow rate is based on a constant value for fluid
density stored in the instrument's memory.
Both the mass and volumetric flowmeters can be ordered with a local keypad/display which provides instantaneous
flow rate, total, and process parameters in engineering units. A pulse output signal for remote totalization and
MODBUS, BACNET or HART communications are also available. PanaFlow digital electronics allows for easy
reconfiguration for most gases, liquids and steam. The PanaFlow MV80 & MV82 Meters' simple installation combines
with an easy-to-use interface that provides quick set up, long term reliability and accurate mass flow measurement over
a wide range of flows, pressures and temperatures.
1.1.3Using This Manual
This manual discusses how to install and operate both the MV80 In-Line and MV82 Insertion Flow Meters:
•Chapter 1 includes an introduction and product description
•Chapter 2 provides information needed for installation
•Chapter 3 describes system operation and programming
•Chapter 4 provides information on HART and MODBUS protocols
•Chapter 5 covers troubleshooting and repair
•Appendix A lists the product specifications
•Appendix B shows current agency approvals
•Appendix C Discusses flow meter calculations
•Appendix D lists a glossary of terms
PanaFlow™ MV80 & MV82 User’s Manual1
Chapter 1. Introduction
F
LOW
1.2How the PanaFlow Vortex Mass Flowmeter Operates
PanaFlow MV80 and MV82 Mass Flowmeters (see Figure 1 below) use a unique sensor head to monitor mass flow
rate by directly measuring three variables-fluid velocity, temperature and pressure. The built-in flow computer
calculates the mass flow rate and volumetric flow rate based on these three direct measurements. The velocity,
temperature and pressure sensing head is built into the vortex meter's flow body. To measure fluid velocity, the
flowmeter incorporates a bluff body (shedder bar) in the flow stream and measures the frequency of vortices created by
the shedder bar. Temperature is measured using a platinum resistance temperature detector (PRTD). Pressure
measurement is achieved using a solid-state pressure transducer. All three elements are combined into an integrated
sensor head assembly located downstream of the shedder bar within the flow body.
Figure 1: In-Line Vortex Multi-Parameter Mass Flowmeter
1.3Velocity Measurement
The PanaFlow vortex velocity sensor is a patented mechanical design that minimizes the effects of pipeline vibration
and pump noise, both of which are common error sources in flow measurement with vortex flowmeters. The velocity
measurement is based on the well-known Von Karman vortex shedding phenomenon. Vortices are shed from a shedder
bar, and the vortex velocity sensor located downstream of the shedder bar senses the passage of these vortices. This
method of velocity measurement has many advantages including inherent linearity, high turndown, reliability and
simplicity.
2PanaFlow™ MV80 & MV82 User’s Manual
Chapter 1. Introduction
Vortex Shedder Bar
Velocity Sensor
Vortices
Constant Wave Length
Flow
1.3.1Vortex Shedding Frequency
Von Karman vortices form downstream of a shedder bar into two distinct wakes. The vortices of one wake rotate
clockwise while those of the other wake rotate counterclockwise. Vortices generate one at a time, alternating from the
left side to the right side of the shedder bar. Vortices interact with their surrounding space by over-powering every other
nearby swirl on the verge of development. Close to the shedder bar, the distance (or wave length) between vortices is
always constant and measurable. Therefore, the volume encompassed by each vortex remains constant, as shown in
Figure 2 below. By sensing the number of vortices passing by the velocity sensor, the PanaFlow™ Flowmeter
computes the total fluid volume.
Figure 2: Measurement Principle of Vortex Flowmeters
1.3.2Vortex Frequency Sensing
The velocity sensor incorporates a piezoelectric element that senses the vortex frequency. This element detects the
alternating lift forces produced by the Von Karman vortices flowing downstream of the vortex shedder bar. The
alternating electric charge generated by the piezoelectric element is processed by the transmitter's electronic circuit to
obtain the vortex shedding frequency. The piezoelectric element is highly sensitive and operates over a wide range of
flows, pressures and temperatures.
PanaFlow™ MV80 & MV82 User’s Manual3
Chapter 1. Introduction
25ft/s
ρ
---------------
37m/s
ρ
----------------
Re
ρVD
μ
----------
=
St
fd
V
-----=
1.3.3Flow Velocity Range
To ensure trouble-free operation, vortex flowmeters must be correctly sized so that the flow velocity range through the
meter lies within the measurable velocity range (with acceptable pressure drop) and the linear range.
The measurable range is defined by the minimum and maximum velocity using Table 1 below.
Table 1: Measurable Ranges
ParameterGasLiquidUnits for ρ
V
min
1 ft/s
English
ρ (lb/ft
3
)
V
max
V
min
V
max
300 ft/s30 ft/s
0.3 m/s
91 m/s9.1 m/s
Metric
ρ (kg/m
3
)
The pressure drop for series MV82 insertion meters is negligible. The pressure drop for series MV80 in-line meters is
defined as:
ΔP = .00024
ΔP = .000011
2
ρV
English units (ΔP in psi, ρ in lb/ft
2
ρV
Metric units (ΔP in bar, ρ in kg/m
3
, V in ft/sec)
3
, V in m/sec)
The linear range is defined by the Reynolds number. The Reynolds number is the ratio of the inertial forces to the
viscous forces in a flowing fluid and is defined as:
Where,
Re = Reynolds Number
ρ = mass density of the fluid being measured
V = velocity of the fluid being measured
D = internal diameter of the flow channel
μ = viscosity of the fluid being measured
The Strouhal number is the other dimensionless number that quantifies the vortex phenomenon. The Strouhal number
is defined as:
Where,
St = Strouhal Number
f = frequency of vortex shedding
d = shedder bar width
V = fluid velocity
4PanaFlow™ MV80 & MV82 User’s Manual
Chapter 1. Introduction
0.0
0.1
0.2
0.3
10
3
10
4
10
5
10
6
10
7
10
8
Linear Range
Reynolds Number, Re
1.3.3Flow Velocity Range (cont.)
As shown in Figure 3 below, PanaFlow meters exhibit a constant Strouhal number across a large range of Reynolds
numbers, indicating a consistent linear output over a wide range of flows and fluid types. Below this linear range, the
intelligent electronics in PanaFlow automatically corrects for the variation in the Strouhal number with the Reynolds
number. The meter's smart electronics corrects for this non-linearity via its simultaneous measurements of the process
fluid temperature and pressure. This data is then used to calculate the Reynolds number in real time. PanaFlow meters
automatically correct down to a Reynolds number of 5,000.
Corrected Range
Strouhal Number, St
5000
Figure 3: Reynolds Number Range for the PanaFlow MV
1.4Temperature Measurement
PanaFlow Flowmeters use a 1000 ohm platinum resistance temperature detector (PRTD) to measure fluid temperature.
1.5Pressure Measurement
PanaFlow Flowmeters incorporate a solid-state pressure transducer isolated by a 316 stainless steel diaphragm. The
transducer itself is micro-machined silicon, fabricated using integrated circuit processing technology. A nine-point
pressure/temperature calibration is performed on every sensor. Digital compensation allows these transducers to
operate within a 0.3% of full scale accuracy band within the entire ambient temperature range of –40°F to 140°F
(–40 to 60°C). Thermal isolation of the pressure transducer ensures the same accuracy across the allowable process
fluid temperature range of –330°F to 750°F (–200 to 400°C).
PanaFlow™ MV80 & MV82 User’s Manual5
Chapter 1. Introduction
1.6Flowmeter Configurations
PanaFlow Vortex Mass Flowmeters are available in two model configurations:
•Series MV80 in-line flowmeter (replaces a section of the pipeline)
•Series MV82 insertion flowmeter (requires a “cold” tap or a “hot” tap into an existing pipeline)
Both the in-line and insertion configurations are similar in that they both use identical electronics and have similar
sensor heads. Besides installation differences, the main difference between an in-line flowmeter and an insertion
flowmeter is their method of measurement.
For an in-line vortex flowmeter, the shedder bar is located across the entire diameter of the flow body. Thus, the entire
pipeline flow is included in the vortex formation and measurement. The sensing head, which directly measures
velocity, temperature and pressure is located just downstream of the shedder bar.
Insertion vortex flowmeters have a shedder bar located across the diameter of a short tube. The velocity, temperature
and pressure sensor are located within this tube just downstream of a built-in shedder bar. This entire assembly is called
the insertion sensing head. It fits through any entry port with a 1.875 inch minimum internal diameter.
The sensing head of an insertion vortex flowmeter directly monitors the velocity at a point in the cross-sectional area of
a pipe, duct, or stack (referred to as “channels”). The velocity at a point in the pipe varies as a function of the Reynolds
number. The insertion vortex flowmeter computes the Reynolds number and then computes the total flow rate in the
channel. The output signal of insertion meters is the total flow rate in the channel. The accuracy of the total flow rate
computation depends on adherence to the piping installation requirements given in Chapter 2. If adherence to those
guidelines cannot be met, contact GE for specific installation advice.
1.6.1Multivariable Options
The MV80 or MV82 models are available with the following options:
•V = volumetric flowmeter
•VT = velocity and temperature sensors
•VTP = velocity, temperature, and pressure sensors
•VT-EM = energy output options
•VTP-EM = energy options with pressure
•VT-EP = external pressure transmitter input.
6PanaFlow™ MV80 & MV82 User’s Manual
Chapter 1. Introduction
1.6.2Line Size, Process Connections and Materials
The MV80 In-line model is built for line sizes ½ through 4 inch wafer or ½ through 8 inch flanged design using
ANSI 150, 300, 600, PN16, 40, or 64 class flanges.
The MV82 Insertion model can be used in line sizes 2 inch and greater and is built with a compression fitting or
packing gland design using 2 inch NPT, or 2 inch flanged connections (ANSI 150, 300, 600, PN16, 40, or 64 class
flanges). The packing gland design can be ordered with a permanent or removable retractor.
The MV80 In-line model can be built with A105 carbon steel, 316L stainless steel, or Hastelloy C-276. The MV82
Insertion model can be built with 316L stainless steel or Hastelloy C-276.
1.6.3Flowmeter Electronics
PanaFlow flowmeter electronics are available mounted directly to the flow body, or remotely mounted. The electronics
housing may be used indoors or outdoors, including wet environments. Available input power options are: DC loop
powered (2-wire), DC powered or AC powered. Three analog output signals are available for your choice of three of
the five process variables: mass flow rate, volumetric flow rate, temperature, pressure or fluid density. A pulse output
signal for remote totalization and MODBUS or HART communications are also available.
PanaFlow flowmeters include a local 2 x16 character LCD display housed within the enclosure. Local operation and
reconfiguration is accomplished using six push buttons operated via finger touch. For hazardous locations, the six
buttons can be operated with the electronics enclosure sealed using a hand-held magnet, thereby not compromising the
integrity of the hazardous location certification.
The electronics include nonvolatile memory that stores all configuration information. The nonvolatile memory allows
the flowmeter to function immediately upon power up, or after an interruption in power. All flowmeters are calibrated
and configured for the customer's flow application.
PanaFlow™ MV80 & MV82 User’s Manual7
Chapter 1. Introduction
[no content intended for this page]
8PanaFlow™ MV80 & MV82 User’s Manual
Chapter 2. Installation
Chapter 2.Installation
2.1Installation Overview
PanaFlow Vortex Flowmeter installations are simple and straightforward. Both the Series MV80 In-Line and Series
MV82 Insertion type flowmeter installations are covered in this chapter. After reviewing the installation requirements
given below, see page 11 for Series MV80 installation instructions. See “Series MV82 Insertion Flowmeter
Installation” on page 15 for Series MV82 installation instructions. Wiring instructions begin in “Loop Power
Flowmeter Wiring Connections” on page 32.
2.1.1Flowmeter Installation Requirements
WARNING!Consult the flowmeter nameplate for specific flowmeter approvals before any
hazardous location installation.
Before installing the flowmeter, verify that the installation site allows for these considerations:
1.Line pressure and temperature will not exceed the flowmeter rating.
2.The location meets the required minimum number of pipe diameters upstream and downstream of the sensor
head as illustrated in Figure 4 on page 10.
3.Safe and convenient access with adequate overhead clearance for maintenance purposes.
4.Verify that the cable entry into the instrument meets the specific standard required for hazardous area
installations.
5.For remote installations, verify the supplied cable length is sufficient to connect the flowmeter sensor to the
remote electronics.
Also, before installation, check your flow system for anomalies such as:
•Leaks
•Valves or restrictions in the flow path which could create disturbances in the flow profile that might cause
unexpected flow rate indications
PanaFlow™ MV80 & MV82 User’s Manual9
Chapter 2. Installation
Flowmeter
AB
Example 1.
One 90° elbow before meter
Flowmeter
AB
Example 2.
Two 90° elbows before meter in one plane
C'C
Flow Conditioner
(if used)
Flowmeter
AB
Example 3.
Two 90° elbows before meter out of plane (if three
C'C
Flow Conditioner
(if used)
90° bends present, double recommended length)
Flowmeter
AB
Example 4.
Reduction before meter
Flowmeter
AB
Example 5.
Expansion before meter
C'C
Flow Conditioner
(if used)
C'C
Flow Conditioner
(if used)
Flowmeter
AB
Example 6.
Regulator or valve partially closed before meter
C'C
Flow Conditioner
(if used)
(If valve is always wide open, base length
requirements on fitting directly preceding it)
Example
1
2
3
4
5
6
A
10D
15D
25D
10D
20D
25D
No Flow
Conditioner
A
N/A
10D
10D
10D
10D
10D
With Flow Conditioner
C
N/A
5D
5D
5D
5D
5D
C'
N/A
5D
5D
5D
5D
5D
No Flow
Conditioner
With Flow
Conditioner
Minimum Required
Downstream Diameters
Minimum Required
Upstream Diameters
D = Internal diameter of channel. N/A = Not applicable.
B
5D
5D
10D
5D
5D
10D
B
5D
5D
5D
5D
5D
5D
2.1.2Unobstructed Flow Requirements
Select an installation site that will minimize possible distortion in the flow profile. Valves, elbows, control valves and
other piping components may cause flow disturbances. Check your specific piping condition against the examples
shown in Figure 4 below. In order to achieve accurate and repeatable performance install the flowmeter using the
recommended number of straight run pipe diameters upstream and downstream of the sensor.
Note:For liquid applications in vertical pipes, avoid installing with flow in the downward direction because the pipe
may not be full at all points. Choose to install the meter with flow in the upward direction if possible.
Figure 4: Recommended Pipe Length Requirements for Installation of Series MV80 & MV82
10PanaFlow™ MV80 & MV82 User’s Manual
Chapter 2. Installation
1
2
34
1
2
34
1
2
34
8
67
5
8
125
9
7
116
10
2.2Series MV80 In-Line Flowmeter Installation
Install the Series MV80 In-Line Flowmeter between two conventional pipe flanges as shown in Figure 6 on page 12
and Figure 7 on page 14. Table 2 below provides the recommended minimum stud bolt lengths for wafer-style meter
body size and different flange ratings.
The meter inside diameter is equal to the same size nominal pipe ID in schedule 80. For example, a 2" meter has an ID
of 1.939" (2" schedule 80). Do not install the meter in a pipe with an inside diameter smaller than the inside diameter of
the meter. For schedule 160 and higher pipe, a special meter is required. Consult GE before purchasing the meter.
Series MV80 Meters require customer-supplied gaskets. When selecting gasket material make sure that it is compatible
with the process fluid and pressure ratings of the specific installation. Verify that the inside diameter of the gasket is
larger than the inside diameter of the flowmeter and adjacent piping. If the gasket material extends into the flow stream,
it will disturb the flow and cause inaccurate measurements.
2.2.1Flange Bolt Specifications
Table 2: Minimum Recommended Stud Bolt Lengths for Wafer Meters
Stud Bolt Lengths for Each Flange Rating (inches)
Line SizeClass 150 and PN16Class 300 and PN40Class 600 and PN64
1 inch6.007.007.50
1.5 inch6.258.509.00
2 inch8.508.759.50
3 inch9.0010.0010.50
4 inch9.5010.7512.25
The required bolt load for sealing the gasket joint is affected by several application-dependent factors. Therefore the
required torque for each application may be different. Refer to the ASME Pressure Vessel Code guidelines for bolt
tightening standards and refer to Figure 5 below for the proper bolt tightening sequence.
4-bolt8-bolt12-bolt
Figure 5: Flange Bolt Torquing Sequence
PanaFlow™ MV80 & MV82 User’s Manual11
Chapter 2. Installation
F
LOW
Enclosure and
display/keypad
are adjustable to suit
most viewing angles.
Incorrect gasket position!
Do not allow any gasket
material to extend into
the flow profile.
Shedder bar (bluff body)
is positioned upstream
of the sensor.
2.2.2Installing Wafer-Style Flowmeters
Install the wafer-style meter between two conventional pipe flanges of the same nominal size as the flowmeter (see
Figure 6 below). If the process fluid is a liquid, make sure the meter is located where the pipe is always full. This may
require locating the meter at a low point in the piping system.
Note:Vortex flowmeters are not suitable for two-phase flows, such as liquid and gas mixtures.
For horizontal pipelines having a process temperature above 300° F, mount the meter at a 45 or 90-degree angle to
avoid overheating the electronics enclosure. To adjust the viewing angle of the enclosure or display/keypad, see
“Display/Keypad Adjustment (All Meters)” on page 30 and “Enclosure Adjustment (Series MV80 Only)” on page 31.
When installing the meter make sure the section marked with a flow arrow is positioned upstream of the outlet, with the
arrow head pointing in the direction of flow. (The mark is on the wafer adjacent to the enclosure mounting neck.) This
ensures that the sensor head is positioned downstream of the vortex shedder bar and is correctly aligned to the flow.
Installing the meter opposite this direction will result in completely inaccurate flow measurement.
12PanaFlow™ MV80 & MV82 User’s Manual
Figure 6: Wafer-Style Flowmeter Installation
CAUTION!When using toxic or corrosive gases, purge the line with inert gas for a minimum of four
hours at full gas flow before installing the flowmeter.
Chapter 2. Installation
2.2.2Installing Wafer-Style Flowmeters (cont.)
To install the meter, complete the following steps:
1.Turn off the flow of process gas, liquid or steam. Verify that the line is not pressurized. Confirm that the
installation site meets the required minimum upstream and downstream pipe diameters.
2.Insert the studs for the bottom side of the meter body between the pipe flanges. Place the wafer-style meter
body between the flanges with the end stamped with a flow arrow on the upstream side, with the arrow head
pointing in the direction of flow. Center the meter body inside the diameter with respect to the inside diameter
of the adjoining piping.
3.Position the gasket material between the mating surfaces. Make sure both gaskets are smooth and even with no
gasket material extending into the flow profile. Obstructions in the pipeline will disturb the flow and cause
inaccurate measurements.
4.Place the remaining studs between the pipe flanges. Tighten the nuts in the sequence shown in Figure 5 on
page 11. Check for leaks after tightening the flange bolts.
PanaFlow™ MV80 & MV82 User’s Manual13
Chapter 2. Installation
LOW
Enclosure and
display/keypad
are adjustable to suit
most viewing angles.
Incorrect gasket position!
Do not allow any gasket
material to extend into
the flow profile.
Shedder bar (bluff body)
is positioned upstream
of the sensor.
2.2.3Installing Flange-Style Flowmeters
Install the flange-style meter between two conventional pipe flanges of the same nominal size as the flowmeter (see
Figure 7 below). If the process fluid is a liquid, make sure the meter is located where the pipe is always full. This may
require locating the meter at a low point in the piping system.
Note:Vortex flowmeters are not suitable for two-phase flows, such as liquid and gas mixtures.
For horizontal pipelines having a process temperature above 300° F, mount the meter at a 45 or 90-degree angle to
avoid overheating the electronics enclosure. To adjust the viewing angle of the enclosure or display/keypad, see
“Display/Keypad Adjustment (All Meters)” on page 30 and “Enclosure Adjustment (Series MV80 Only)” on page 31.
F
Figure 7: Flange-Style Flowmeter Installation
CAUTION!When using toxic or corrosive gases, purge the line with inert gas for a minimum of four
hours at full gas flow before installing the flowmeter.
When installing the meter make sure the flange marked with a flow arrow is positioned upstream of the outlet flange,
with the arrow head pointing in the direction of flow. The mark is on the flange adjacent to the enclosure mounting
neck. This ensures that the sensor head is positioned downstream of the vortex shedder bar and is correctly aligned to
the flow. Installing the meter opposite this direction will result in completely inaccurate flow measurement.
14PanaFlow™ MV80 & MV82 User’s Manual
Chapter 2. Installation
valve bore
2-inch min.
2-inch
valve size
2.2.3Installing Flange-Style Flowmeters (cont.)
To install the meter, complete the following steps:
1.Turn off the flow of process gas, liquid or steam. Verify that the line is not pressurized. Confirm that the
installation site meets the required minimum upstream and downstream pipe diameters.
2.Seat the meter level and square on the mating connections with the flange stamped with a flow arrow on the
upstream side, with the arrow head pointing in the direction of flow. Position a gasket in place for each side.
Make sure both gaskets are smooth and even with no gasket material extending into the flow profile.
Obstructions in the pipeline will disturb the flow and cause inaccurate measurements.
3.Install bolts in both process connections. Tighten the nuts in the sequence shown in Figure 5 on page 11. Check
for leaks after tightening the flange bolts.
2.3Series MV82 Insertion Flowmeter Installation
2.3.1General Installation Guidelines
Prepare the pipeline for installation using either a cold tap or hot tap method described in this section. Refer to a
standard code for all pipe tapping operations. The following tapping instructions are general in nature and intended for
guideline purposes only. Before installing the meter, review the mounting position and isolation value requirements
given in the following sub-sections.
2.3.1aElectronics Enclosure Clearance
Allow clearance between the electronics enclosure top and any obstruction when the meter is fully retracted.
2.3.1bIsolation Valve Selection
An isolation valve is available as an option with Series MV82 meters. If you supply the isolation valve, refer to
Figure 8 below and verify that it meets the following requirements:
1.A minimum valve bore diameter of 1.875 inches is required, and the valve’s body size should be two inches.
Normally, gate valves are used.
2.Verify that the valve’s body and flange rating are within the flowmeter’s maximum operating pressure and
temperature.
3.Choose an isolation valve with at least a two inch distance between the flange face and the gate portion of the
valve. This ensures that the flowmeter’s sensor head will not interfere with the operation of the isolation valve.
1.875-inch min.
Isolation Valve Requirements
Figure 8: Isolation Valve Dimensions
PanaFlow™ MV80 & MV82 User’s Manual15
Chapter 2. Installation
Incorrect AlignmentCorrect Alignment
2.3.1cCold Tap Guidelines
Refer to a standard code for all pipe tapping operations. The following tapping instructions are general in nature and
intended for guideline purposes only. Proceed as follows:
CAUTION!When using toxic or corrosive gases, purge the line with inert gas for a minimum of four
hours at full gas flow before installing the flowmeter.
1.Turn off the flow of process gas, liquid or steam. Verify that the line is not pressurized.
2.Confirm that the installation site meets the minimum upstream and downstream pipe diameter requirements.
See Figure 4 on page 10.
3.Use a cutting torch or sharp cutting tool to tap into the pipe. The pipe opening must be at least 1.875 inches in
diameter. (Do not attempt to insert the sensor probe through a smaller hole.)
4.Remove all burrs from the tap. Rough edges may cause flow profile distortions that could affect flowmeter
accuracy. Also, obstructions could damage the sensor assembly when inserting into the pipe.
WARNING!All flowmeter connections, isolation valves and fittings for cold tapping must have the
same or higher pressure rating as the main pipeline.
5.After cutting, measure the thickness of the cut-out and record this number for calculating the insertion depth.
6.Weld the flowmeter pipe connection on the pipe. Make sure this connection is within ± 5° perpendicular to the
pipe centerline (see Figure 9 below).
Figure 9: Connection Alignment
7.Install the isolation valve (if used).
8.When welding is complete and all fittings are installed, close the isolation valve or cap the line. Run a static
pressure check on the welds. If pressure loss or leaks are detected, repair the joint and retest.
9.Connect the meter to the pipe process connection.
10. Calculate the sensor probe insertion depth and insert the sensor probe into the pipe as described on the
following pages.
16PanaFlow™ MV80 & MV82 User’s Manual
Chapter 2. Installation
FLOW
Check upstream and
downstream piping
requirements.
Weld mounting
adapter.
Connect process
connection
(flange or NPT)
Connect
isolation valve.
Hot tap pipe
Test for leaks,
purge pipe.
Connect meter to
valve, calculate
insertion depth,
install flowmeter.
2.3.1dHot Tap Guidelines
WARNING!Hot tapping must be performed by a trained professional. US. regulations often require
a hot tap permit. The manufacturer of the hot tap equipment and/or the contractor performing the
hot tap is responsible for providing proof of such a permit.
WARNING!All flowmeter connections, isolation valves, and fittings for hot tapping must have the
same pressure rating as the main pipeline or higher.
Refer to a standard code for all pipe tapping operations. The following tapping instructions and Figure 10 below are
general in nature and are intended for guideline purposes only.
Figure 10: Hot Tap Sequence
PanaFlow™ MV80 & MV82 User’s Manual17
Chapter 2. Installation
2.3.1dHot Tap Guidelines (cont.)
Proceed as follows:
1.Confirm that the installation site meets the minimum upstream and downstream pipe diameter requirements.
2.Weld a two inch mounting adapter on the pipe. Make sure the mounting adapter is within ± 5° perpendicular to
the pipe centerline (see Figure 9 on page 16). The pipe opening must be at least 1.875 inches in diameter.
3.Connect a two inch process connection on the mounting adapter.
4.Connect an isolation valve on the process connection. The valve's full open bore must be at least 1.875 inches
in diameter.
5.Run a static pressure check on the welds. If pressure loss or leaks are detected, repair the joint and re-test.
6.Connect the hot tapping equipment to the isolation valve, open the isolation valve and drill at least a 1.875 inch
diameter hole.
7.Retract the drill, close the isolation valve, and remove the hot tapping equipment.
8.Connect the flowmeter to the isolation valve and open the isolation valve.
9.Calculate the sensor probe insertion depth and insert the sensor probe into the pipe as described on the
following pages.
18PanaFlow™ MV80 & MV82 User’s Manual
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