Baker Panametrics T8 User manual
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Copyright 2023 Baker Hughes company.
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holders.
Model T8
Ultrasonic flow transducer
Installation guide
BH046C21 Rev. E
Sep 2023
ii
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iii
Preface
Services
Typographical Conventions
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.
Safety Issues
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.
Panametrics provides customers with an experienced staff of customer support personnel
ready to respond to technical inquiries, as well as other remote and on-site support needs. To
complement our broad portfolio of industry-leading solutions, we offer several types of
flexible and scalable support services including: Training, Product Repairs, Service Agreements
and more.
Please visit https://www.bakerhughes.com/panametrics/panametrics-services for more
details.
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.
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.
Attention European Customers!To meet CE Mark requirements for all units intended for use in the EU,
all electrical cables must be installed as described in this manual.
Preface
iv
Working Area
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
Panametrics 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 of 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.
EU Declaration of Conformity
The EU Declaration of Conformity (EU DoC) and other compliant documents can be downloaded from the Product
Support Portal.
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 this equipment.
Model T8 Installation Guide v
Contents
Chapter 1. Installation
1.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Transducer construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.3 Installing T8 transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.1 Equipment needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.2 Locating and welding the transducer ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3.3 Hot tapping the ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.4 Positioning the transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.5 Attaching the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.6 Inserting the transducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.3.7 Adjusting the safety alignment collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1.3.8 Removing the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
1.4 Resetting or storing the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Chapter 2. Aligning the transducers
2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
2.2 Preparing for transducer alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
2.3 Aligning the transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Chapter 3. Removing the transducers
3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
3.2 Attaching the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
3.3 Removing the transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
3.4 Disconnecting the hydraulic cylinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Chapter 4. Specifications
4.1 T8 transducer physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
4.2 T8 transducer Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
4.3 Specific conditions of use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Contents
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Model T8 Installation Guide 1
Chapter 1. Installation
Chapter 1. Installation
1.1 Introduction
The T8 Ultrasonic Flow Transducer is used exclusively with the Panametrics line of ultrasonic flowmeters. These
transducers measure the flow rate of sonically-conductive gases through pipes having diameters from 4 in. (100 mm)
to 36 in. (90 cm). Such measurements are typically independent of the pipe material.
1.2 Transducer construction
Each T8 transducer assembly (see Figure 1 below) consists of the following:
• A metallic body with a 1/2” NPT male thread for attaching an electrical junction box
• A body flange that is welded or machined to the transducer body
• A transducer with a piezoelectric element mounted on a wedge and wired to a BNC style electrical connector
• A BNC style electrical connector for use in connecting the transducer to the flowmeter
The T8 is available in various lengths from 12 in. (30 cm) to72 in. (180 cm).
Figure 1: T8 Transducer assembly
Chapter 1. Installation
2 Model T8 Installation Guide
1.3 Installing T8 transducers
The pressure mechanism is a piston-driven hydraulic pump used for inserting T8 transducers into pressurized
pipelines. To perform this procedure safely, you must follow all the instructions in this chapter very carefully.Fi
1.3.1 Equipment needed
To properly install the T8 transducers, you must provide the following items:
• Pipe marker
• Spiral-wound gaskets (6)
• Adjustable torque wrench with a 3.75-19 ft-lb (5-20 N-m) range and a socket drive
• Standard and deep sockets
• Hot-tapping mechanism (for use by qualified personnel only)
• Open-end wrench
• Oscilloscope
1.3.2 Locating and welding the transducer ports
To locate and weld the transducer ports, complete the following steps:
1. The variable H equals the distance between the center lines of the transducer ports (see Figure 2 on page 3). To
calculate the distance H, use the following equation:
where: ID = pipe inside diameter
tan=tangent of transducer head angle
U = transducer centerline offset (0.155 for ? = 30° or 0.067 for ? = 45°)
Example: To calculate the transducer port locations on a 30 in. (75 cm) pipe with a 0.40 in. (1 mm) wall thickness, using
a T8 transducer with a 30° head angle:
H = 2 * [(29,2 + 0,325) * tan 30° + 0,155] = 34.40 in.
2. For optimum performance, select a port location that has at least 20 pipe diameters of straight, undisturbed flow
upstream and 10 pipe diameters of straight, undisturbed flow downstream from the point of measurement.
Undisturbed flow means avoiding sources of turbulence such as valves, flanges, elbows; avoiding swirl; and
avoiding irregular flow profiles.
H 2 ID 0.325+ tanU+ =
Model T8 Installation Guide 3
Chapter 1. Installation
3. Using the calculated H value, mark two crosshairs on the pipe where you intend to weld the transducer ports, so
that the distance between the two marks equals the H value (see Figure 2 below).
IMPORTANT: Port locations should NOT be located directly on the top or bottom of the pipe. Place the ports at
between 15 degrees and 90 degrees from the vertical plane of the pipe.
Figure 2: Locating the transducer ports
Chapter 1. Installation
4 Model T8 Installation Guide
4. Weld the 2 in., schedule 80 nozzles with pipe flanges to the two marked locations on the pipe. Be careful to
maintain perpendicularity and parallelism as shown in Figure 3 below.
Figure 3: Welding the nozzles with flanges to the pipe
5. Inspect the flange gaskets. They must not be previously used, warped, pitted or scratched.
6. Place one gasket on the top of each pipe nozzle flange, as shown in Figure 4 below.
Figure 4: Placing a gasket on a pipe nozzle flange
WARNING! Only qualified personnel should weld bosses and nozzles, using a suitable ASME IX
qualified welding procedure.
Model T8 Installation Guide 5
Chapter 1. Installation
7. Bolt a 2 in. flanged, full-port, ball valve to each nozzle (see Figure 5 below). Be sure to use a new flange gasket for
each valve.
Figure 5: Mounting a Ball Valve onto the Flange
1.3.3 Hot tapping the ports
IMPORTANT: Hot tapping should only be performed by qualified personnel. Follow all applicable code and safety
practices during these procedures.
1. Inspect the flange gaskets. They must not be previously used, warped, pitted or scratched.
WARNING! Only qualified personnel should weld bosses and nozzles, using a suitable ASME IX
qualified welding procedure.
WARNING! Please follow all applicable site, local, and regional safety measures when conducting
tapping of nozzles to pipe. Great care should be taken to ensure activity is not being
conducted in a flammable environment without proper mitigation strategies.
WARNING! Any deviation from this prescribed procedure can result in accidental release of
process gas that may be dangerous or hazardous due to its pressure, flammability, or
composition. Safe work practices should be followed and periodic review of this
procedure is highly recommended before conducting this work.
Chapter 1. Installation
6 Model T8 Installation Guide
2. Place a new gasket on the top of the ball valve flange, as shown in Figure 6 below.
Figure 6: Placing a gasket on the ball valve flange
3. Bolt the hot-tapping mechanism to the 2 in. flanged ball valve, as shown in Figure 7 below.
Figure 7: Securing the hot-tapping mechanism
Model T8 Installation Guide 7
Chapter 1. Installation
4. Make sure the ball valve is fully “open” (see Figure 8 below).
Figure 8: Checking the open valve
5. Drill a 1.75 in. diameter hole through the pipe wall, as shown in Figure 9 below.
Figure 9: Drilling a hole through the pipe wall
Chapter 1. Installation
8 Model T8 Installation Guide
6. Retract the drill bit of the hot-tapping mechanism and “close” the ball valve (see Figure 10 below).
Figure 10: Closing the ball valve
7. Unbolt the hot-tapping mechanism from the ball valve and remove the mechanism from the port (see Figure 11
below).
Figure 11: Removing the mechanism from the port
8. Repeat steps 1 through 7 to hot tap the other port.
Model T8 Installation Guide 9
Chapter 1. Installation
1.3.4 Positioning the transducer
Complete the steps in this section to position the T8 transducer in the hot-tapped port.
Note:
Keep the cover for the safety collar loosely around the transducer to allow for proper alignment.
1. Measure the transducer length (“DD”) from the center of the transducer head to the end of the BNC connector.
Figure 12: Measuring the transducer length
2. Make sure the transducer head is fully retracted into the Low Pressure Assembly (LPA). If the transducer is not fully
retracted, loosen all the screws of the locking collar and manually retract the transducer into the LPA (see Figure
13 below).
Figure 13: Transducer head fully retracted
Chapter 1. Installation
10 Model T8 Installation Guide
3. Rotate the transducer barrel until the transducer face points in the general direction of the other port. Then,
tighten the locking collar screws with a torque wrench to fasten the transducer in place. Use the maximum torque
shown in Figure 14 below, but do not overtighten the screws. Alternate the tightening sequence of the six screws to
properly “seat” the locking collar.
IMPORTANT: The long flat or the flat marked “F” is in line with the transducer face (see Figure 14 below). To aid the
installation, make a mark on the flange indicating the direction of the transducer face.r.
Figure 14: Rotating the transducer barrel
4. Inspect the flange gaskets. They must not be previously used, warped, pitted or scratched.
5. Place a new gasket on the top of the ball valve flange (see Figure 15 below).
Figure 15: Placing a new gasket on the flange
Model T8 Installation Guide 11
Chapter 1. Installation
6. Bolt the LPA mechanism to the 2 in. flanged ball valve, as shown in Figure 16 below.
Figure 16: Bolting the LPA mechanism to the ball valve
Chapter 1. Installation
12 Model T8 Installation Guide
7. Measure the “A” dimension, which is the distance from the outside surface of the pipe wall to the end of the BNC
connector on the transducer (see Figure 17 below). Then, calculate the insertion distance (“I”) by using the
following equation:
where: A = distance from the pipe wall to the end of the BNC connector on the transducer.
W = pipe wall thickness
C = 0.325 in. (a constant)
DD = distance from the center of the transducer head to the end of the BNC connector, as measured in step 1.
Figure 17: Measuring the “A” dimension
I A W C DD+ –+=
Table of contents
