Panametrics T8 Installation Guide

Model T8
Ultrasonic Flow Transducer
Installation Guide
panametrics.com
BH046C21 EN E
Model T8
Ultrasonic flow transducer
Installation guide
BH046C21 Rev. E
Sep 2023
panametrics.com
Copyright 2023 Baker Hughes company.
This material contains one or more registered trademarks of Baker Hughes Company and its subsidiaries
in one or more countries. All third-party product and company names are trademarks of their respective
holders.
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ii
Preface
Services
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.
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.
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.
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.
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.
iii
Preface
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 this equipment.
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.
Please visit www.bakerhughesds.com/health-safety-and-environment-hse for take-back instructions and more
information about this initiative.
iv
Contents
Chapter 1. Installation
1.1
1.2
1.3
1.4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Transducer construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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
Resetting or storing the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
2.1
2.2
2.3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Preparing for transducer alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Aligning the transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
3.1
3.2
3.3
3.4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Attaching the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Removing the transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Disconnecting the hydraulic cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.1
4.2
4.3
T8 transducer physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
T8 transducer Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Specific conditions of use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Chapter 2. Aligning the transducers
Chapter 3. Removing the transducers
Chapter 4. Specifications
Model T8 Installation Guide
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Contents
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vi
Model T8 Installation Guide
Chapter 1. Installation
Chapter 1.
1.1
Installation
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).
30°
Figure 1: T8 Transducer assembly
Model T8 Installation Guide
1
Chapter 1. Installation
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:
H = 2   ID + 0.325   tan  + U 
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.
2
Model T8 Installation Guide
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
Model T8 Installation Guide
3
Chapter 1. Installation
WARNING! Only qualified personnel should weld bosses and nozzles, using a suitable ASME IX
qualified welding procedure.
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.
6.
Inspect the flange gaskets. They must not be previously used, warped, pitted or scratched.
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
4
Model T8 Installation Guide
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
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.
IMPORTANT:
1.
Hot tapping should only be performed by qualified personnel. Follow all applicable code and safety
practices during these procedures.
Inspect the flange gaskets. They must not be previously used, warped, pitted or scratched.
Model T8 Installation Guide
5
Chapter 1. Installation
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
6
Model T8 Installation Guide
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
Model T8 Installation Guide
7
Chapter 1. Installation
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.
8
Repeat steps 1 through 7 to hot tap the other port.
Model T8 Installation Guide
Chapter 1. Installation
1.3.4
Positioning the transducer
Note:
Keep the cover for the safety collar loosely around the transducer to allow for proper alignment.
Complete the steps in this section to position the T8 transducer in the hot-tapped port.
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
Model T8 Installation Guide
9
Chapter 1. Installation
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.
5.
Inspect the flange gaskets. They must not be previously used, warped, pitted or scratched.
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
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Model T8 Installation Guide
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
Model T8 Installation Guide
11
Chapter 1. Installation
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:
I = A + W –  C + DD 
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
12
Model T8 Installation Guide
Chapter 1. Installation
8.
Mark the insertion distance on the shaft of the transducer, using one layer of colored electrical tape around the
circumference so that the ends overlap (see Figure 18 below). Alternatively, apply any mark that is waterproof and
easily identifiable.
Figure 18: Marking the insertion distance
9.
Repeat steps 1 through 8 to position the other transducer in the other port.
Model T8 Installation Guide
13
Chapter 1. Installation
1.3.5
Attaching the hydraulic cylinder
The next step in the transducer installation process is to attach the hydraulic cylinder to one of the transducer ports.
1.
Install the connector protector on the 1/2” NPT thread of the transducer shaft until it is finger-tight (see Figure 19
below).
Figure 19: Installing the connector protector
14
Model T8 Installation Guide
Chapter 1. Installation
2.
Refer to Figure 20 below and attach the hydraulic cylinder to the four studs of the LPA with four 3/8-16 hex nuts.
Tighten the nuts to a maximum torque of 19 ft-lb (25 N-m).
IMPORTANT:
If the piston of the hydraulic cylinder touches the connector protector before the hydraulic cylinder
can seat properly onto the studs, remove the hydraulic cylinder from the LPA. Connect the hydraulic
pump to the hydraulic cylinder, and refer to “Resetting or Storing the Hydraulic Cylinder” on page 24 to
move the piston to the appropriate position.
Figure 20: Attaching the hydraulic cylinder
Model T8 Installation Guide
15
Chapter 1. Installation
3.
Refer to Figure 21 below and attach the hose of the hydraulic pump to the hydraulic cylinder at the pipe coupler.
Note:
The 2 in. ball valve should be closed and the locking collar should be tightly secured to the transducer shaft.
Figure 21: Attaching the hydraulic cylinder
16
Model T8 Installation Guide
Chapter 1. Installation
1.3.6
Inserting the transducer
After attaching the hydraulic cylinder, you are now ready to insert the T8 transducer.
1.
2.
To prepare for pumping, rotate the side knob of the hydraulic pump clockwise to tighten it (see Figure 22 below).
Slowly pump the handle of the pump until you feel resistance, then stop pumping. The resistance indicates that
the piston is applying pressure to the transducer.
Figure 22: Tightening the hydraulic pump side knob
Model T8 Installation Guide
17
Chapter 1. Installation
3.
There are four 10-32 x 3/4 socket head screws and two 1/4-20 x 1 3/8 socket head screws on the locking collar (see
Figure 23 below). Evenly loosen these screws. just enough so that the transducer can move freely.
Figure 23: Loosening the socket head screws
4.
Before opening the ball valve do the following:
•
Make sure the LPA purge valve (see Figure 23 above) is in the “Closed” position.
•
Verify that the hydraulics are engaged and the transducer shaft has pressure applied (there should be
resistance when the pump handle is pumped).
WARNING! Make sure you perform the above checks before opening the ball valve, otherwise
personal injury or damage to the equipment may occur.
18
Model T8 Installation Guide
Chapter 1. Installation
5.
6.
Slowly open the 2 in. ball valve and check for gas leaks:
•
If you discover any leaks, close the ball valve and fix the leaks.
•
If you do not detect any leaks, proceed to the next step.
See Figure 24 below and slowly pump the hydraulic pump handle until the transducer moves to the pre-marked
insertion depth, as indicated by the edge of the electrical tape touching the edge of the locking collar. You will feel
resistance on the hydraulic pump handle as you insert the transducer against the line pressure.
Figure 24: Pumping the hydraulic pump handle
7.
Tighten the locking collar screws with a torque wrench to fasten the transducer in place. Use the maximum
torque listed in Figure 24 above, but do not overtighten the screws.
Note:
Alternate the tightening sequence of the six screws to properly “seat” the locking collar.
Model T8 Installation Guide
19
Chapter 1. Installation
1.3.7
Adjusting the safety alignment collar
The next step in the transducer installation procedure is to adjust the safety alignment collar.
1.
2.
Locate the safety alignment collar that was shipped with the T8 transducer.
Use an Allen wrench to remove the two socket head cap screws and the set screw from the safety alignment
collar (see Figure 25 below).
Figure 25: Preparing the safety alignment collar for installation
3.
Using the socket head cap screws, loosely attach the safety alignment collar to the barrel of the transducer (see
Figure 26 below).
Figure 26: Attaching the collar to the transducer barrel
20
Model T8 Installation Guide
Chapter 1. Installation
4.
Slide the safety alignment collar into the safety collar cover and position both collars so that they are touching
the safety plate (see Figure 27 below).
Note:
If necessary, adjust the height of both screws on the safety collar cover to allow the safety alignment collar to
fit into it.
Figure 27: Positioning the safety alignment collar
5.
Using the socket head cap screws, loosely attach the safety alignment collar to the barrel of the transducer (see
Figure 26 below).
Figure 28: Securing the safety alignment collar
Model T8 Installation Guide
21
Chapter 1. Installation
1.3.8
Removing the hydraulic cylinder
The final step in the T8 transducer installation process is the removal of the hydraulic cylinder from the port.
1.
Verify that the screws on the locking and safety alignment collars are tightened to the appropriate torque. Then,
very slowly turn the side knob of the hydraulic pump counterclockwise to release the pressure of the hydraulic
cylinder on the transducer shaft (see Figure 29 below).
Figure 29: Releasing the hydraulic cylinder pressure
22
Model T8 Installation Guide
Chapter 1. Installation
2.
See Figure 30 below and remove the hydraulic cylinder by unscrewing the four 3/8-16 stainless steel hex nuts.
Figure 30: Removing the hydraulic cylinder
3.
Unscrew and remove the connector protector (see Figure 30 above).
Note:
Disconnecting the hydraulic pump at the quick-disconnect pipe coupler simplifies the hydraulic cylinder
removal.
Model T8 Installation Guide
23
Chapter 1. Installation
4.
Attach the pipe adapter to the 1/2” NPT thread of the transducer, and then attach the junction box to the pipe
adapter. Use a wrench on the flats of the transducer body to prevent transducer rotation when installing the
junction box (see Figure 31 below).
Figure 31: Installing the junction box and transducer cable
5.
Connect a coaxial cable to the transducer to complete the installation for this port (see Figure 31 above).
Note:
6.
Use a junction box with a straight-through hub when submersible/waterproof cable is connected to the
transducer.
Connect the transducer to your flowmeter electronics console, as described in the flowmeter User’s Manual.
Repeat the procedures described in this chapter to install the second T8 transducer. After both transducers have
been installed, proceed to the next section.
24
Model T8 Installation Guide
Chapter 1. Installation
1.4
Resetting or storing the hydraulic cylinder
To prepare the hydraulic cylinder for its next use or for storage, you must retract the piston.
1.
Remove the safety pin and attach the guide for the push rod to the hydraulic cylinder with four 3/8-16 hex nuts
(see Figure 32 below). Save the safety pin for future use.
Figure 32: Retracting the piston
2.
SIf it was previously removed, re-attach the hydraulic pump to the hydraulic cylinder at the pipe coupler (see
Figure 33 below).
Figure 33: Reattaching the hydraulic pump
Model T8 Installation Guide
25
Chapter 1. Installation
3.
Turn the side knob of the hydraulic pump counterclockwise to release the oil pressure (see Figure 34 below).
Figure 34: Releasing the oil pressure
4.
Hold the cylinder with one hand, and push the rod with the other hand until the piston bottoms out inside the
cylinder (see Figure 35 below).
Figure 35: Pushing the rod into the cylinder
5.
26
Do one of the following:
•
If you are ready to insert a transducer into a port, proceed to the appropriate section of this chapter.
•
If you have already installed both transducers, proceed to step 6 on the next page.
Model T8 Installation Guide
Chapter 1. Installation
6.
Position the 0.28 in. diameter hole of the push rod to align with the 0.28 in. diameter hole of the push rod guide.
Then, push the safety pin through the holes to secure the cylinder, push rod and push rod guide assembly (see
Figure 36 below).
Figure 36: Aligning the push rod and guide
After both transducers are installed and the hydraulic cylinder has been stored, proceed to the next chapter to align
your T8 transducers.
Model T8 Installation Guide
27
Chapter 1. Installation
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28
Model T8 Installation Guide
Chapter 2. Aligning the transducers
Chapter 2. Aligning the transducers
2.1
Introduction
After you finish installing the T8 transducers, as described in the previous chapter, you must fine tune the transducer
alignment using the procedures in this chapter.
IMPORTANT:
2.2
Alignment is not necessary for the T8 transducer with a 180° head. Skip this chapter.
Preparing for transducer alignment
To prepare for alignment of the T8 transducers, complete the following steps:
1.
Make sure the flowmeter electronics console is powered ON and that the transducers are properly connected to
the flowmeter.
2.
From the Diagnostic menu on the flowmeter, display the transducer signal strength on the electronics console. If
necessary, refer to your flowmeter Service Manual for instructions.
3.
As described in your flowmeter Service Manual, connect an oscilloscope to the transducer terminals.
4.
Find the signal strength, quality and amplitude limits in the troubleshooting/diagnostics section of the flowmeter
Service Manual. You will need to know these limits to complete the alignment procedure.
Model T8 Installation Guide
29
Chapter 2. Aligning the transducers
2.3
Aligning the transducers
To align the T8 transducers, complete the following steps:
1.
At each transducer installation point, refer to Figure 37 below and verify that:
•
The safety alignment collar and the cover for the safety collar are firmly against the safety plate
•
The screws on the safety alignment collar are tightened to the appropriate torque
•
Each transducer is positioned at the correct insertion depth
•
The transducer face points directly toward the other transducer (check the flat and the flange mark)
Figure 37: Aligning the transducers
30
Model T8 Installation Guide
Chapter 2. Aligning the transducers
2.
At each transducer port, evenly loosen the two 1/4-20 screws and the four 10-32 screws just enough to free the
locking collar from the transducer shaft (see Figure 38 below). If the locking collar will not come loose, remove the
1/4-20 screws completely.
Figure 38: Freeing the locking collar
Model T8 Installation Guide
31
Chapter 2. Aligning the transducers
Refer to Figure 39 below and continue the alignment procedure as follows:
3.
Position a wrench on the transducer flats (see Figure 38 on page 31) and rotate the transducer about one degree
clockwise or counterclockwise. Observe the signal strength displayed on the flowmeter console for at least two or
three readings or observe the receive signal on the oscilloscope.
4.
Rotate the other transducer about one degree clockwise or counterclockwise. Observe the signal strength
displayed on the flowmeter console for at least two or three readings or observe the receive signal on the
oscilloscope.
5.
Alternately rotate the two transducers until the signal strength, signal amplitude and the signal quality are
optimized.
IMPORTANT:
You can only observe the signal quality with an oscilloscope. If you do not have an oscilloscope, adjust
the transducers to obtain the highest signal strength.
Figure 39: Observing the signal strength
32
Model T8 Installation Guide
Chapter 2. Aligning the transducers
Refer to Figure 40 below and continue the alignment procedure as follows:
6.
After adjusting the transducers for the highest signal strength and the best signal quality, reinstall the two 1/4-20
screws at each transducer port and secure the locking collar by tightening the screws with a torque wrench. Use
a maximum torque of 3.75 ft-lb (5 N-m) on the four 10-32 screws and 5 ft-lb (6.8 N-m) on the two 1/4-20 screws.
Alternate the tightening sequence of the six screws to properly “seat” the locking collar.
7.
If necessary, re-tighten the junction box to the pipe adapter. Be sure to use a wrench on the transducer flats to
prevent the transducer from rotating during re-tightening of the junction box.
You have now completed the transducer alignment procedure.
Figure 40: Completing the transducer alignment procedure
Model T8 Installation Guide
33
Chapter 2. Aligning the transducers
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34
Model T8 Installation Guide
Chapter 3. Removing the transducers
Chapter 3. Removing the transducers
3.1
Introduction
To safely remove the T8 transducers from the process line, you must follow the instructions in this chapter very
carefully.
WARNING! Make sure the flowmeter power is disconnected before performing the procedures in
this chapter.
3.2
Attaching the hydraulic cylinder
Begin the transducer removal process by referring to Figure 41 below and completing the following steps:
1.
2.
Disconnect the coaxial cable from the transducer.
Use a wrench on the flats of the pipe adapter to prevent it from rotating, and remove the junction box from the
pipe adapter.
Figure 41: Preparing to remove a transducer
3.
Use a wrench on the flats of the transducer body to prevent the transducer from rotating, and disconnect the
pipe adapter.
4.
Place the connector protector onto the 1/2” NPT thread of the transducer shaft and finger-tighten it.
Model T8 Installation Guide
35
Chapter 3. Removing the transducers
5.
Attach the hydraulic cylinder to the four studs on the LPA, using four 3/8-16 stainless steel nuts (see Figure 42
below). Tighten the four 3/8-16 stainless steel hex nuts to a maximum torque of 19 ft-lb (25 N-m).
Note:
Disconnecting the hydraulic pump at the “quick disconnect” will simplify attaching the hydraulic cylinder.
Figure 42: Attaching the hydraulic cylinder
36
Model T8 Installation Guide
Chapter 3. Removing the transducers
3.3
Removing the transducer
After attaching the hydraulic cylinder, refer to Figure 43 below and complete the following steps:
1.
To prepare for pumping, rotate the side knob of the hydraulic pump clockwise to tighten it.
2.
Slowly pump the handle of the pump to bring the piston into contact with the connector protector. When you feel
resistance, stop pumping the handle. The resistance indicates that the piston is touching the connector
protector.
3.
Verify that the hydraulics are engaged and that the transducer shaft has pressure applied, as indicated by a
feeling of resistance when the pump handle is pumped).
Figure 43: Pumping to move the piston
Model T8 Installation Guide
37
Chapter 3. Removing the transducers
Refer to Figure 44 below and continue as follows:
4.
Use an Allen wrench to remove the set screw from the safety alignment collar.
5.
Evenly loosen the two 1/4-28 x 5/8 socket head cap screws with an Allen wrench just enough to slide the safety
alignment collar out of the cover.
6.
Remove the alignment collar from the transducer by removing the two 1/4-28 x 5/8 socket head cap screws.
Figure 44: Removing the alignment collar
38
Model T8 Installation Guide
Chapter 3. Removing the transducers
7.
Refer to Figure 45 below and check the condition of the insertion depth marker. If it was erased or otherwise
damaged, replace the marker with one layer of colored electrical tape around the transducer circumference
until the ends overlap. Place the edge of the tape against the edge of the locking collar.
Figure 45: Checking the Insertion Depth Marker
8.
Make sure the piston of the hydraulic cylinder is still applying positive pressure to the connector protector (see
Figure 46 below). Then, evenly loosen the screws in the locking collar just enough to free the collar from the
transducer shaft.
Figure 46: Loosening locking collar screws
Model T8 Installation Guide
39
Chapter 3. Removing the transducers
Refer to Figure 47 below and continue as follows:
9.
After the locking collar is loose, very slowly turn the side knob of the hydraulic pump counterclockwise to release
the pressure and allow the transducer to slowly slide out of the flange.
10. After the transducer head is completely retracted inside the LPA, turn the 2 in. flanged ball valve to its closed
position.
Figure 47: Releasing the pressure
40
Model T8 Installation Guide
Chapter 3. Removing the transducers
3.4
Disconnecting the hydraulic cylinder
To remove the hydraulic cylinder, refer to Figure 48 below and complete the following steps:
1.
Tighten the locking collar screws with a torque wrench to secure the transducer in place. Use the maximum
torque listed in Figure 48 above, but do not overtighten the screws..
IMPORTANT:
2.
Alternate the tightening sequence of the six screws to properly “seat” the locking collar.
Open the purge valve to vent and release the gas pressure trapped inside the LPA.
Figure 48: Preparing to remove the hydraulic cylinder
Model T8 Installation Guide
41
Chapter 3. Removing the transducers
Refer to Figure 49 below and continue as follows:
1.
2.
3.
4.
Disconnect the hydraulic cylinder from the hydraulic pump at the quick disconnect.
Remove the four 3/8-16 hex nuts to detach the hydraulic cylinder from the four studs of the LPA.
Unbolt and remove the LPA/transducer assembly from the 2” flanged ball valve.
Unscrew and remove the connector protector.
You have completed the removal procedure for this transducer. If necessary, repeat the process to remove the other
transducer. After both transducers have been removed, properly store the hydraulic cylinder for future use.
Figure 49: Removing the hydraulic cylinder
42
Model T8 Installation Guide
Chapter 4. Specifications
Chapter 4. Specifications
4.1
T8 transducer physical specifications
Applications:
High-Pressure Applications with an Insertion
Installation Type:
Wetted
Material:
Field Mounting:
Process Connection:
Holder Type:
Holder Ratings:
Operating Frequency:
Pressure Range:
Electrical Rating:
Ambient Temperature Range:
Process Temperature Range:
4.2
Retraction Mechanism, Natural Gas
Titanium
Flowcell, Hot or Cold Tap
Flanged, 2 in. (50 mm )
High-Pressure Insertion Mechanism
150#, 300#, 600#, 900#
100 kHz
0 to 2700 psig
0 to 1500 psig for USA/Canada Certified Products
200 V peak-to-peak, 5 mA
–40°F to +140°F (–40°C to +60°C)
–58°F to +302°F (–50°C to +150°C)
T8 transducer Certifications
North American -
Class I, Division 1, Group C, D
Explosion proof:
European/International Flameproof:
North American -
II 2 G Ex db IIC T6...T3 Gb
Tamb -40°C to +60°C
IECEx SIR 20.0006X Sira 20ATEX1001X
IP66, TYPE 4X, 200Vpp, 5mA
Weatherproof:
European/International Weatherproof:
Model T8 Installation Guide
IP 66
43
Chapter 4. Specifications
4.3
Specific conditions of use
Consult the manufacturer if dimensional information on the flameproof joints is necessary.
It is end-user’s responsibility to ensure that the ambient around the T8 assembly does not exceed the permitted
ambient of -40°C to +60°C, regardless of process temperature.
The T8 transducers made of titanium (where ff = Ti) are potential ignitions sources when subjected to impact or
friction, which shall be taken into consideration during installation.
The T8 have non-conducting coating which may generate an ignition-capable level of electrostatic charge under
certain extreme conditions. The user shall take the necessary precautions to minimise the risk from electrostatic
discharge. For example, controlling the environmental humidity where installed in order to minimize generation of
static electricity, with the equipment protected from direct airflow which could cause a transfer of charge to the
surface of the equipment. Cleaning should be done only with a damp cloth.
The temperature classification rating of the T8 assemblies is dependent upon the maximum process temperature
(see table below).
Table 1: The temperature classification rating of the T8
44
Model T8
Process temperature
T-Class
T8-bb-cc-dd-NT-ff-gg-hh-ii-jj-zz
-50ºC to +85ºC
T6
+86ºC to +100ºC
T5
+101ºC to +135ºC
T4
+136ºC to +150ºC
T3
Model T8 Installation Guide
Warranty
Warranty
Each instrument manufactured by Panametrics is warranted to be free from defects in material and workmanship.
Liability under this warranty is limited to restoring the instrument to normal operation or replacing the instrument,
at the sole discretion of Panametrics. Fuses and batteries are specifically excluded from any liability. This warranty
is effective from the date of delivery to the original purchaser. If Panametrics determines that the equipment was
defective, the warranty period is:
•
one year from delivery for electronic or mechanical failures
•
one year from delivery for sensor shelf life
If Panametrics determines that the equipment was damaged by misuse, improper installation, the use of
unauthorized replacement parts, or operating conditions outside the guidelines specified by Panametrics, the
repairs are not covered under this warranty.
The warranties set forth herein are exclusive and are in lieu of all other warranties whether
statutory, express or implied (including warranties or merchantability and fitness for a
particular purpose, and warranties arising from course of dealing or usage or trade).
Return Policy
If a Panametrics instrument malfunctions within the warranty period, the following procedure must be
completed:
1. Notify Panametrics, giving full details of the problem, and provide the model number and serial number of the
instrument. If the nature of the problem indicates the need for factory service, Panametrics will issue a RETURN
MATERIAL AUTHORIZATION (RMA), and shipping instructions for the return of the instrument to a service center will be
provided.
2. If Panametrics instructs you to send your instrument to a service center, it must be shipped prepaid to the
authorized repair station indicated in the shipping instructions.
3.
Upon receipt, Panametrics will evaluate the instrument to determine the cause of the malfunction. Then, one of
the following courses of action will then be taken:
•
If the damage is covered under the terms of the warranty, the instrument will be repaired at no cost to the
owner and returned.
•
If Panametrics determines that the damage is not covered under the terms of the warranty, or if the warranty
has expired, an estimate for the cost of the repairs at standard rates will be provided. Upon receipt of the
owner’s approval to proceed, the instrument will be repaired and returned.
Model T8 Installation Guide
45
Warranty
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46
T8 Flare Gas Transducer Installation Guide
Customer Support Centers
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The Boston Center
1100 Technology Park Drive
Billerica, MA 01821
U.S.A.
Tel: 800 833 9438 (toll-free)
978 437 1000
E-mail: [email protected]
Ireland
Sensing House
Shannon Free Zone East
Shannon, County Clare
Ireland
Tel: +353 (0)61 470291
E-mail: [email protected]
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BH046C21 EN E (09/2023)
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