Model T17

Ultrasonic Flow Transducer
Installation Guide

panametrics.com

BH048C21 EN G

Model T17

Ultrasonic Flow Transducer

Installation Guide
BH048C21 Rev. G
April 2024

panametrics.com
Copyright 2024 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.

[no content intended for this page]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 offlexible and scalable support services including: Training, Product Repairs, Service
Agreements and more.
Please visit https://www.bakerhughes.com/panametrics/panametrics-services for moredetails.

Typographical Conventions
Note:

These paragraphs provide information that provides a deeper understanding of the situation, but is notessential to the proper completion of the instructions.

IMPORTANT: These paragraphs provide information that emphasizes instructions that are essential to proper setupof 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 tothe 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 foreach 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.

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 thisequipment during automatic operation, and do not enter the work envelope of thisequipment 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.

iii

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
Panametrics is an active participant in Europe’s Waste Electrical and Electronic Equipment (WEEE) take-backinitiative, 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 thenatural 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.
Visit www.bakerhughesds.com/health-safety-and-environment-hse for take-back instructions and more
information about this initiative.

iv

Contents

Chapter 1. Introduction
1.1
1.2

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Transducer Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

2.1
2.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Diametrical Path Nozzle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2.1 Identifying and Checking the Nozzle Installation Kit Components, Diametrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2.2 Selecting and Marking the First Nozzle Location, Diametrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.3 Determining and Marking the Second Nozzle Location, Diametrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.4 Installing the First Welding Boss, Diametrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.5 Installing the First Nozzle, Diametrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.2.6 Installing the Second Welding Boss and Nozzle, Diametrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.7 Hot Tapping the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.8 Cold Tapping the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Non-Diametrical Mid Radius Path Nozzle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.3.1 Identifying and Checking the Nozzle Installation Kit Components, Non-Diametrical, Mid-Radius . . . . . . . . . . .17
2.3.2 Selecting and Marking the First Nozzle Location, Non-Diametrical, Mid-Radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3.3 Determining and Marking the Second Nozzle Location, Non-Diametrical, Mid-Radius . . . . . . . . . . . . . . . . . . . . . .21
2.3.4 Installing the First Welding Boss, Non-Diametrical, Mid-Radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.3.5 Installing the First Nozzle, Non-Diametrical Mid Radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.3.6 Installing the Second Welding Boss and Nozzle, Non-Diametrical Mid Radius . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.3.7 Hot Tapping the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.3.8 Cold Tapping the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 2. Installing Pipe Nozzles

2.3

Chapter 3. Installing an Isolation Valve
3.1

Diametrical or Non-Diametrical Nozzle, Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
3.1.1 For 3 inch Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Chapter 4. Inserting T17 Transducers into the Pipe
4.1
4.2

4.3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Inserting Transducers Using the Insertion Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2.1 Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2.2 Mounting the Insertion Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2.3 Aligning the Downstream Transducer for Extended Range Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Connecting an XAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Chapter 5. Maintaining the T17 Transducers
5.1

Removing Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.1.1 Using the Insertion Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Chapter 6. Specifications
6.1
6.2
6.3

T17 Transducer Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
T17 Transducer Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Special Conditions of Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Model T17 Installation Guidev

Contents[no content intended for this page]vi

Model T17 Installation Guide

Chapter 1. Introduction

Chapter 1.
1.1

Introduction

Overview

The T17 ultrasonic flow transducer is used exclusively with the Panametrics line of ultrasonic flowmeters. Thesetransducers measure the flow rate of sonically-conductive gases through pipes having diameters between 12 in.
(305 mm) and 120 in. (3000 mm). This manual provides details on the following topics:• Transducer construction• Nozzle installation• Transducer installation• Maintenance• Specifications

Note:

For installation on pipes ranging from 4 to 12 in. (100 to 300 mm), or for using the BIAS 90° configuration,please see the Panametrics 916-117 Installation Guide.

1.2

Transducer Construction

Each T17 transducer assembly (see Figure 1 below) consists of the following components:• A fully sealed, welded, all metal body made from grade 2 titanium as standard• A transducer head that consists of piezoelectric elements wired to the BNC connector• A BNC style connector for use in connecting the transducer to the flowmeter
The T17 transducer is available in standard lengths of 33 in. (840 mm) to 60 in. (1500 mm) and with either a 180o or
174o angled head.

Transducer Head

BNC Connector

Metallic Body
Figure 1: General T17 Transducer (180o Head)Model T17 Installation Guide

1

Chapter 1. Introduction[no content intended for this page]2

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

Chapter 2. Installing Pipe Nozzles
2.1

Introduction

Before the T17 transducers can be installed into the pipe, you will need to install pipe nozzles. Nozzles may be installed
as part of a fabricated spoolpiece, or by using the hot or cold process with a Panametrics Nozzle Installation Kit.
IMPORTANT: This procedure only applies if you are using a Nozzle Installation Kit. If you are tapping the pipe without
using a Nozzle Installation Kit, refer to the supplied drawings in your shipment. This procedure is written
and illustrated for installations on horizontal pipes. However, the procedure is the same for vertical pipe
installations.

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 ofprocess gas that may be dangerous or hazardous due to its pressure, flammability, orcomposition. Safe work practices should be followed and periodic review of thisprocedure is highly recommended before conducting this work.conducted in a
flammable environment without proper mitigation strategies.

This section describes how to install nozzles in the different available configurations:• Standard flow range operation of 0.1 to 328 f/s (0.03 to 100 m/s):
This configuration uses two 180° head T17 transducers.
• Extended range operation of 0.1 to 394 f/s (0.03 to 120 m/s):
This configuration uses one 180° head T17 transducer and one 174° head T17 transducer.
Either of these arrangements may be used on one of two path configurations:• A diametrical path configuration (the signal path forms a line through the pipe diameter (see Figure 2 below).
• A non-diametrical path configuration (the signal path forms a line offset from the diameter (see Figure 3
below.

Figure 2: Diametrical Path Configuration

Model T17 Installation Guide

3

Chapter 2. Installing Pipe Nozzles

Figure 3: Non-Diametrical Path Configuration

4

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.2

Diametrical Path Nozzle Installation

This procedure includes the following instructions:• Identifying and checking the nozzle installation kit components• Selecting and marking the first nozzle location• Determining and marking the second nozzle location• Installing the first welding boss
• Installing the first nozzle• Installing the second welding boss and nozzle• Hot tapping the pipe

Model T17 Installation Guide

5

Chapter 2. Installing Pipe Nozzles

2.2.1

Identifying and Checking the Nozzle Installation Kit Components, Diametrical

The nozzle kit consists of various components which you must identify and check as described in the following
sub-sections.
The Nozzle Installation Kit contains the materials listed below. Use Figure 4 below to help identify each component.
• 2 Nozzles (if purchased)• 2 Welding bosses• 1 Jig• 1 Threaded rod (1 in. diameter), washer and nut

IMPORTANT: You will need to supply eight 5/8” studs with two nuts each (for 3”, 150# flanges), or 3/4” studs with twonuts each (for 3”, 300# flanges).

Welding BossNozzleJig

Threaded Rodwith Washer and Nut
Figure 4: Components in Nozzle Installation Kit
Check the marking on the welding boss. The pipe OD and the mounting angle are engraved on the boss as shown
below.

Code for Diametrical Path

Pipe O.D.
Mounting Angle

6

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.2.2

Selecting and Marking the First Nozzle Location, Diametrical
CAUTION!

Correct nozzle alignment is critical to the successful operation of the flowmeter.
Therefore, all marking, positioning and welding operations must be carried out with theutmost attention to accuracy. Unless otherwise stated, dimensional positioning of thenozzles must be held to a tolerance of 1/16 in. (±1.6 mm) relative to each other and withrespect to the pipe centerline. the angular tolerance must be held to 1O.
All hole cutting in process piping must be performed using hot tapping equipment.

1.

For optimum performance, you should select a location that has at least 20 pipe diameters of straight,
undisturbed flow upstream and 5 pipe diameters of straight, undisturbed flow downstream from themeasurement point. Undisturbed flow means avoiding sources of turbulence such as valves, flanges, elbows;
avoiding swirl; and avoiding disturbed flow profiles.

20D

5D

TOP
45°
D
FLOW

TOP VIEWNOZZLE
2 PLACES

END VIEW
2.

We recommend that you install the nozzles on a diameter as near as possible to the horizontal plane(i.e., 3 o’clock and 9 o’clock positions) for horizontal pipe.

Note:
3.

If you cannot find a proper location, please consult with Panametrics Flow Application engineering.

At the 3 o’clock position, center punch the pipe to mark the position for the center of the first nozzle.

Side View

Model T17 Installation Guide

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Chapter 2. Installing Pipe Nozzles

4.

Spray this area with a marking dye product. Using a metal edge, scribe 6” long vertical and a horizontal lines thatintersect at the center punch mark.

Side View
2.2.3

Determining and Marking the Second Nozzle Location, Diametrical1.

The position for the second nozzle is typically a distance equal to one pipe outside diameter along the pipe andlocated on the opposite side of the pipe (i.e., 180 ° around). Spray this area with a marking dye product. (Forinstallation other than 45°, the distance is equal to the OD times the tangent of the installation angle.

2.

Due to the possible variation in outside diameter of the pipe, measure the outside diameter of the pipe at four
location between the nozzle centers. Calculate the average outside diameter based on these measurements.

D1

D2 D3

D4
Side View

3.

Using a roll of polyester film (or equivalent), cut a strip of film with the following width and length:

IMPORTANT: Ensure that the sides of the film are cut parallel to each other.
• Width: equal to the average outside diameter calculated in Step 2 above.
•

Length: equal to 4 times the outside diameter of the pipe.

AverageO.D.

4 x O.D.

8

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

4.

Wrap the strip of film around the pipe with one edge running along the vertical scribe line at the first nozzle
location. Make sure the strip overlaps squarely around the pipe and mark the overlap position of the strip. Thisequals the circumference of the pipe.

Overlap MarkSide View
5.

Remove the strip of film and fold it as shown below to determine the position which is diametrically opposite theoverlap position when the film is reapplied to the pipe.

Overlap Mark
6.

Fold to HereMark the outside of the fold for reference.

Mark the Edge

7.

Place the strip of film on the pipe again. This time, line up the overlap mark with the horizontal and vertical scribelines. Again, make sure you wrap the strip of film squarely around the pipe.

Model T17 Installation Guide

9Chapter 2. Installing Pipe Nozzles

Overlap MarkSide View
First Edge
8.

The new position of the center of the second nozzle is now identified as the intersection of the fold line and thesecond edge of the strip of film. Center punch this location prior to removing the strip of film.

Fold Mark

Punch Here

Second Edge
Side View
9.

Remove the film.

10. Scribe 6” long vertical and horizontal lines that intersect at the center-punch mark.

Scribe Lines

Side View

10

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.2.4
1.

Installing the First Welding Boss, Diametrical

Before welding the first boss, you must add another scribe line, known as the oblique center line. The obliquecenter line compensates for the slope or oblique angle of the boss. The oblique center line is offset from the true
center (vertical) scribe line marked earlier by a distance of “X,” which is dependent on the pipe outside diameteras follows:d2
X = D  2 – ----------------------------------------1
tan  sin  d  D  where,D = pipe outside diameterd = welding boss outside diameter (1.660 in.)
Table 1 below shows values of X for various pipe sizes.
Table 1: X Values for Various Pipe Sizes
NPS (DN)

2.

Pipe

O.D.

X Dimensions

12 in. (300 mm)

12.75 in.

0.054 in. (1.37 mm)

14 in. (350 mm)

14.00 in.

0.049 in. (1.24 mm)

16 in. (400 mm)

16.00 in.

0.043 in. (1.09 mm)

18 in. (450 mm)

18.00 in.

0.038 in. (0.97 mm)

20 in. (500 mm)

20.00 in.

0.035 in. (0.89 mm)

22 in (600 mm)

22.00 in.

0.032 in. (0.81 mm)

24 in. (650 mm)

24.00 in.

0.029 in. (0.74 mm)

26 in. (700 mm)

26.00 in.

0.027 in. (0.68 mm)

Scribe the oblique center line on the pipe at the prescribed distance from the true center line. The oblique centerline should be marked on the side of the true center line that is closer to the second nozzle location.

True Center Line

Oblique Center LineSide View

Model T17 Installation Guide

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Chapter 2. Installing Pipe Nozzles

3.

Position the welding boss such that the four scribe lines on the welding boss are lined up with the horizontal
scribe mark and the oblique center line on the pipe. Make sure you orient the boss as shown below.

Oblique Center Line Scribe Mark

4.

Horizontal Scribe Mark

Clamp the boss in place using a pipe strap or equivalent so that it cannot move during tack welding.

5.

Check the boss alignment, then tack weld the carbon steel boss to the pipe in each of the four grooves between
the boss scribe marks.

6.

Remove the clamp and check the alignment again. If the boss is misaligned by 0.02 in. (0.5 mm) or more, remove
the boss, grind off the welds and reinstall it.

12Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.2.5

Installing the First Nozzle, Diametrical

IMPORTANT: It is essential that the nozzle is set up and fixed in position using the jig and 1-in. threaded rod provided,prior to welding the nozzle.
1.

Screw the threaded rod into boss that is welded onto the pipe. If necessary, remove the washer and nut from thethreaded rod.

2.

Slide the nozzle over the threaded rod, and align the contoured end of the nozzle so it matches the pipe arc. Thenslide the jig over the threaded rod, fitting the jig into the welding boss.

Model T17 Installation Guide

13

Chapter 2. Installing Pipe Nozzles

3.

Align the jig and nozzle bolt holes and tighten the assembly in place, using the washer and nut.

Washer and Nut
Bolt Holes

4.
5.

Install studs, nuts, and washers in the bolt holes on the flange/jig assembly and tighten the nuts.
The jig, boss, and nozzle combination is designed to provide a 0.094 in. (2.4 mm) root gap between the bevelededge of the nozzle and the outside diameter of the pipe. If the 0.094 in. (2.4 mm) clearance does not exist all
around, the nozzle must be removed and ground appropriately to provide the required clearance. If the root gap
is larger than the 0.094 in. (2.4 mm) dimension, then suitably sized washers may be inserted between the jig andthe nozzle to reduce the root gap dimension.

WARNING! Only qualified personnel should weld bosses and nozzles, using a suitable ASME BPVC IX
qualified welding procedure.

6.

Tack weld the nozzle to the pipe at four diametrically opposed points, each tack being approximately
0.6 in. (15 mm) in length. Allow the welds to cool for 30 seconds between tacks.

7.

Proceed to complete the root pass and subsequent filler passes as required.

8.

14

Allow the welds to cool, then remove the threaded rod, washer, nut, and jig.

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.2.6

Installing the Second Welding Boss and Nozzle, Diametrical

Install the second welding boss and nozzle at the required position as described in “Installing the First Welding Boss,
Diametrical” on page 11 and “Installing the First Nozzle, Diametrical” on page 13.

The completed installation should appear as shown below.

NOZZLE
2 PLACESWELDING BOSS
2 PLACES

FLOWModel T17 Installation Guide

45°

15

Chapter 2. Installing Pipe Nozzles

2.2.7

Hot Tapping the PipeWARNING! Hot tapping should be performed only by qualified personnel. Follow all applicable codeand safety practices during these procedures.

For 3 in. Flanges:
1.

Install 3 in. ANSI flanged isolation valves on both nozzles (full bore, 8 in. face to face for 150# RF or
11.125 in. for 300# RF) with a gasket and 5/8 in. (for 150# rated flanges) or 3/4 in. (for 300# rated flanges)
diameter studs and nuts. Orient the valve handles to minimize interference.

2.

Hot tap holes in the pipe using a hot tap machine equipped with a 3/4 in. (19.05 mm) drill bit. Then use a coupon
retaining hole saw to cut a hole with a diameter of 2.50 in. (63.5 mm) minimum.

2.2.8

Cold Tapping the PipeWARNING! Cold tapping should be performed only by qualified personnel. Follow all applicablecode and safety practices during these procedures.

The procedure for cold tapping a pipe is the same as the hot tapping procedure. However, an isolation valve is notnecessary during the process. The hot tapping medium can be applied directly to the nozzle. Isolation valves will be
added after the tapping is complete.

2.3

Non-Diametrical Mid Radius Path Nozzle Installation

This procedure includes the following instructions:• Identifying and checking the nozzle installation kit components• Selecting and marking the first nozzle location• Determining and marking the second nozzle location• Installing the first welding Boss
• Installing the first nozzle• Installing the second welding boss and nozzle• Hot tapping the pipe

16

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.3.1

Identifying and Checking the Nozzle Installation Kit Components, Non-Diametrical, Mid-Radius

The nozzle kit consists of various components which you must identify and check as described in the following
sections.

The Nozzle Installation Kit contains the materials listed below. Use Figure 5 below to help identify each component.
• 2 Nozzles (if purchased)• 2 Welding bosses• 1 Jig• 1 Threaded rod (1 in. diameter), washer and nut

IMPORTANT: You will need to supply eight 5/8” studs with two nuts each (for 2” 150# flanges, 2” 300# flange or3” 150# flanges), or 3/4” studs with two nuts each (for 3”, 300# flanges).

Welding BossNozzleJig

Threaded Rod with
Washer and Nut
Figure 5: Components for Nozzle Installation Kit
Check the marking on the cylindrical surface of the welding boss. The pipe OD and the mounting angle are engravedon the boss as shown below.

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Chapter 2. Installing Pipe Nozzles

2.3.2

Selecting and Marking the First Nozzle Location, Non-Diametrical, Mid-Radius
CAUTION!

Correct nozzle alignment is critical to the successful operation of the flowmeter;
therefore, all marking, positioning and welding operations must be carried out with theutmost attention to accuracy. Unless otherwise stated, dimensional positioning of thenozzles must be held to a tolerance of 1/16 in. (±1.6 mm) relative to each other and withrespect to the pipe centerline. the angular tolerance must be held to 1O.
All hole cutting in process piping must be performed using hot tapping equipment.

1.

For optimum performance, you should select a location that has at least 20 pipe diameters of straight,
undisturbed flow upstream and 5 pipe diameters of straight, undisturbed flow downstream from themeasurement point. Undisturbed flow means avoiding sources of turbulence such as valves, flanges, elbows;
avoiding swirl; and avoiding disturbed flow profiles.

20D

5D

TOP
45°
D
FLOW

TOP VIEWNOZZLE
2 PLACES

END VIEW
2.

We recommend that you install the nozzles on a chord as near as possible to the horizontal plane for horizontal
pipe.

Note:
3.

18

If you cannot find a proper location, please consult with Panametrics Flow Application engineering.

Locate the top of the pipe and put a center punch mark there as a reference mark.

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

4.

Calculate the position for the center of the first nozzle:

DAS-------- = ----  
2
2
where

 X o
 = ATAN  ------- , in radian unit
 Y o
D – 2W
CHORD
Y o =  -------------------  
 2   LOC 

Xo =

2

2
D
---- – Y o 2 CHORD = 1---  for mid-radius  LOC 2S---- = X o2DAS-------- = ----  B
22W
2nd Nozzle

CHORD
– 2W
D-------------------  
 2   LOC 

Model T17 Installation Guide

1stNozzleD---2
D – 2W------------------2

B

 X o ,Y o 

19Chapter 2. Installing Pipe Nozzles

Table 2: AS/2 Values for Various Pipe Sizes with .375” Wall Thickness
Pipe

5.

NPS (DN)

O.D.

AS/2 Dimensions

26 in. (650mm)

26 in.

13.829 in. (351.26 mm)

28 in. (700mm)

28 in.

14.876 in. (377.86 mm)

30 in. (750mm)

30 in.

15.924 in. (404.46 mm)

32 in. (650mm)

32 in.

16.971 in. (431.06 mm)

34 in.

34 in.

18.018 in. (457.66 mm)

36 in. (900mm)

36 in.

19.065 in. (484.26 mm)

38 in.

38 in.

20.113 in. (510.86 mm)

40 in. (1000mm)

40 in.

21.160 in. (537.46 mm)

42 in. (1050mm)

42 in.

22.207 in. (564.06 mm)

44 in. (1100mm)

44 in.

23.254 in. (590.66 mm)

46 in.

46 in.

24.301 in. (617.26 mm)

48 in. (1200mm)

48 in.

25.349 in. (643.86 mm)

52 in. (1300mm)

52 in.

27.443 in. (697.06 mm)

54 in.

54 in.

28.490 in. (723.65 mm)

56 in. (1400mm)

56 in.

29.538 in. (750.25 mm)

60 in. (1500mm)

60 in.

31.632 in. (803.45 mm)

64 in. (1600mm)

64 in.

33.726 in. (856.65 mm)

66 in.

66 in.

34.774 in. (883.25 mm)

Using the calculated dimension AS/2 in 4, center punch the pipe to mark the position for the center of the first
nozzle.

Top
Reference
Point
AS
2

Center Pointof 1st Nozzle

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Chapter 2. Installing Pipe Nozzles

6.

Spray this area with a marking dye product. Using a metal edge, scribe 6” long vertical and a horizontal lines thatintersect at the center punch mark.
Top
Reference
Point

2.3.3
1.

Determining and Marking the Second Nozzle Location, Non-Diametrical, Mid-Radius

The position for the second nozzle is typically a distance equal to S along the pipe and located on the other sideof the pipe. For installation other than 45°, the distance is equal to S times the tangent of the installation angle.
Steps 2 to 7 on the following pages are for the second nozzle located at 45° from the first nozzle.

Second Nozzle Location

First Nozzle Location

Flow DirectionS

Top Reference Point

S tan(= S, when = 45 )Top view

IMPORTANT: Follow the convention as depicted in the Top View above. While looking down onto the header pipe, withthe flow direction from left to right, the second nozzle should be always located to the right of the first
nozzle and the top reference point. The nozzles cannot be mounted on the header pipe if they arelocated, by mistake, at the mirror image to this convention.
2.

Due to the possible variation in outside diameter of the pipe, measure the outside diameter of the pipe at four
location between the nozzle centers. Calculate the average outside diameter based on these measurements.

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Chapter 2. Installing Pipe Nozzles

D1

D2 D3

D4
Side View

3.

Using a roll of polyester film (or equivalent), cut a strip of film at the width and length as follows:

IMPORTANT: Ensure that the sides of the film are cut parallel to each other.
• Width: equal to S where S = 222
D---- – Y o with:
 2

D = average outside diameter calculated in Step 2.

Chord
D – 2WY o =  -------------------  
 2   Loc 

W = 0.375”
Chord Location = 0.5•

22Length: equal to 3.5 times the outside diameter of the pipe.

Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

Then, mark a line at a distance AS from the left edge, where AS = D x  with:

D = average outside diameter calculated in Step 2.
·
 X 0
 = ATAN  ------- in radian unit
 Y 0

Chord
D – 2WY o =  -------------------  
 2   Loc 

W = 0.375”
Chord Location = 1/2
22
D---- – Y o
 2

X0 =

AS

Mark LineS

3.5 X D.
4.

Wrap the strip of film around the pipe with one corner edge lined up with the vertical and horizontal scribe lines at
the first nozzle location. Make sure the strip overlaps squarely around the pipe and that the marked line on thefilm from step 3 is on the outside and is visible.
Top Reference Point

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23

Chapter 2. Installing Pipe Nozzles

5.

The new position for the center of the second nozzle is now identified as the intersection of the mark line and thesecond edge of the strip of film. Center punch this location prior to removing the strip of film.

Mark Line

Punch Here
Overlapping
Area

Second Edge
6.

Remove the film.

7.

Scribe 6” long vertical and horizontal lines that intersect at the center punched area.

IMPORTANT: Follow the illustration closely, due to the non-symmetrical geometry of the off-diameter chord. A
mirrored location of both nozzles with respect to a plane either perpendicular or parallel to the pipe in
the above illustration will not accommodate the standard supplied Nozzle Installation Kit (NIK) andnozzles.

2.3.4
1.

Installing the First Welding Boss, Non-Diametrical, Mid-Radius

Before welding the first boss, you must add another scribe line, known as the oblique center line. The obliquecenter line compensates for the slope or oblique of the boss. The oblique center line is offset from the true center(vertical) scribe line marked earlier by a distance of “X,” which is dependent on the pipe outside diameter asfollows:

X =

2
2
2
2
D
---- – Y o –  D---- – Y 1
 2
 2

whereD = Pipe outside diameter
D – 2W
Y 0 =  -------------------  (chord location)
 2 
Y 1 = Y 0 + d--2
W = 0.375” (default wall thickness)
Chord Location = 1/2 (for mid radius)d = 1.66 in. welding boss outside diameter

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Model T17 Installation Guide

Chapter 2. Installing Pipe Nozzles

2.

Scribe the oblique center line on the pipe from the horizontal line outward, at the prescribed distance from thetrue center line. The oblique center line should be marked on the side of the true center line that is closer to thesecond nozzle location. One end of the oblique line should stop at the horizontal line.
Table 3: Values of X for Various Pipe Sizes with 0.375” Wall Thickness
Pipe
NPS (DN)

O.D.

X Dimensions

26 in. (660 mm)

26.00 in.

0.502 in. (12.76 mm)

28 in. (710 mm)

28.00 in.

0.501 in. (12.72 mm)

30 in. (760 mm)

30.00 in.

0.499 in. (12.68 mm)

32 in. (810 mm)

32.00 in.

0.498 in. (12.65 mm)

34 in. (860 mm)

34.00 in.

0.497 in. (12.62 mm)

36 in. (910 mm)

36.00 in.

0.496 in. (12.59 mm)

38 in. (965 mm)

38.00 in.

0.495 in. (12.57 mm)

40 in. (1020 mm)

40.00 in.

0.494 in. (12.55 mm)

42 in. (1070 mm)

42.00 in.

0.493 in. (12.53 mm)

44 in. (1120 mm)

44.00 in.

0.493 in. (12.51 mm)

46 in. (1170 mm)

46.00 in.

0.492 in. (12.50 mm)

48 in. (1220 mm)

48.00 in.

0.492 in. (12.49 mm)

52 in. (1320 mm)

52.00 in.

0.491 in. (12.46 mm)

54 in. (1370 in)

54.00 in.

0.490 in. (12.45 mm)

56 in. (1420 mm)

56.00 in.

0.490 in. (12.44 mm)

60 in. (1520 mm)

60.00 in.

0.489 in. (12.42 mm)

64 in. (1625 mm)

64.00 in.

0.488 in. (12.41 mm)

66 in. (1680 mm)

66.00 in.

0.488 in. (12.40 mm)

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Chapter 2. Installing Pipe Nozzles

3.

Position the welding boss such that the three scribe lines on the welding boss are lined up with the horizontal
scribe mark and the oblique center line on the pipe. Make sure you orient the boss as shown below.

4.

Clamp the boss in place using a pipe strap or equivalent so that it cannot move during tack welding.

5.

Check the boss alignment, then tack weld the carbon steel boss to the pipe in each of the four grooves between
the boss scribe marks.

6.

Remove the clamp and check the alignment again. If the boss is misaligned by 0.02 in. (0.5 mm) or more, remove
the boss, grind off the welds and reinstall it.

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Chapter 2. Installing Pipe Nozzles

2.3.5

Installing the First Nozzle, Non-Diametrical Mid Radius

IMPORTANT: It is essential that the nozzle is set up and fixed in position using the jig and 1-in. threaded rod provided,prior to welding the nozzle.
1.

Screw the threaded rod into a boss that is welded onto the pipe. If necessary, remove the washer and nut fromthe threaded rod.

2.

Slide the nozzle over the threaded rod, and align the contoured end of the nozzle so that it matches the pipe arc.
Then slide the jig over the threaded rod, fitting the jig into the welding boss.

3.

Align the jig and nozzle bolt holes and tighten the assembly in place, using the washer and nut.

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27

Chapter 2. Installing Pipe Nozzles

4.
5.

Install studs, nuts, and washers in the bolt holes on the flange/jig assembly and tighten the nuts.
The jig, boss, and nozzle combination is designed to provide a 0.094 in. (2.4 mm) root gap between the bevelededge of the nozzle and the outside diameter of the pipe. If the 0.094 in. (2.4 mm) clearance does not exist all
around, the nozzle must be removed and ground appropriately to provide the required clearance. If the root gap
is larger than the 0.094 in. (2.4 mm) dimension, then suitably sized washers may be inserted between the jig andthe nozzle to reduce the root gap dimension.

WARNING! Only qualified personnel should weld bosses and nozzles, using a suitable ASME BPVC IX
qualified welding procedure.

6.

Tack weld the nozzle to the pipe at four diametrically opposed points, each tack being approximately 0.6 in. (15mm) in length. Allow the welds to cool for 30 seconds between tacks.

7.

Proceed to complete the root pass and subsequent filler passes as required.

8.

Allow the welds to cool, then remove the threaded rod, washer, nut, and jig.

2.3.6

Installing the Second Welding Boss and Nozzle, Non-Diametrical Mid Radius

Install the second welding boss and nozzle at the required position as described in Installing the First Welding Bossand Installing the First Nozzle.

The completed installation should appear as shown below.

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Chapter 2. Installing Pipe Nozzles

2.3.7

Hot Tapping the PipeWARNING! Hot tapping should be performed only by qualified personnel. Follow all applicable codeand safety practices during these procedures.

For 3 in. Flanges:
1.

Install 3 in. ANSI flanged isolation valves on both nozzles (full bore, 8 in. face to face for 150# RF or
11.125 in. for 300# RF) with a gasket and 5/8 in. (for 150# rated flanges) or 3/4 in. (for 300# rated flanges)
diameter studs and nuts. Orient the valve handles to minimize interference.

2.

Hot tap holes in the pipe using a hot tap machine equipped with a 3/4 in. (19.05 mm) drill bit. Then use a coupon
retaining hole saw to cut a hole with a diameter of 2.50 in. (63.5 mm) minimum.

2.3.8

Cold Tapping the PipeWARNING! Cold tapping should be performed only by qualified personnel. Follow all applicablecode and safety practices during these procedures.

The procedure for cold tapping a pipe is the same as the hot tapping procedure. However, an isolation valve is notnecessary during the process. The hot tapping medium can be applied directly to the nozzle. Isolation valves will be
added after the tapping is complete.

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29

Chapter 2. Installing Pipe Nozzles[no content intended for this page]

30

Model T17 Installation Guide

Chapter 3. Installing an Isolation Valve

Chapter 3. Installing an Isolation Valve
Note:

This chapter describes how to install an isolation valve onto a nozzle for applications using the flare gas
insertion mechanism.

3.1

Diametrical or Non-Diametrical Nozzle, Valve Installation

3.1.1

For 3 inch Flanges

Note:This installation of the isolation valves may have been accomplished already during the hot tapping
operation.

Refer to Figure 6 below and install 3 inch ANSI flanged full-bore isolation valves on both nozzles (8 in. face to face for150# RF flanges or 11.125 in. for 300# RF flanges) with a gasket and 5/8 in. (for 150# rated flanges) or 3/4 in. (for 300#
rated flanges) diameter studs and nuts. Orient the valve handles to minimize interference.

UPSTREAM
TRANSDUCER PORTGASKET

3 INCH 150 LB, RF WELDING NECK FLANGE
2 PLACES; REF ONLY
3 INCH SCH 80 PIPE NOZZLE
2 PLACES; REF ONLYFLOW

GASKETDOWNSTREAM
TRANSDUCER PORT

Figure 6: Installation of Isolation Valves - Standard Assembly

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Chapter 3. Installing an Isolation Valve[no content intended for this page]

32

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Chapter 4. Inserting T17 Transducers into the Pipe

Chapter 4. Inserting T17 Transducers into the Pipe
4.1

Introduction

The T17 transducer is typically installed into a meter body. The meter body is a section of pipe that contains the ports
where the transducers will be mounted. The meter body may be prefabricated or created by installing ports on theexisting pipe. The T17 is inserted using a packing gland-based, low-pressure insertion mechanism.

4.2

Inserting Transducers Using the Insertion Mechanism

The Insertion Mechanism is designed for manual (non-assisted) transducer insertion into operating or pressurized
pipes. Before inserting the mechanism, you must have isolation valves mounted to nozzles in the meter body.
Inserting the transducers into the pipe consists of the following:• Preparing for Installation• Mounting the Insertion Mechanism• Inserting the Transducer into the Pipe
• Aligning the Transducers

WARNING! The manual insertion mechanism system is for low-pressure applications (80psig/5.5Bar or less). Use the appropriate safety precautions when inserting orwithdrawing the insertion mechanism.

4.2.1

Preparing for Installation

Before you begin, you should find an area where you can place the insertion mechanism upright without placing any
weight on the transducer (e.g., a bench with a cutout large enough to slide the transducer through).
You will need the following items for installation:• A packing tool (may be shipped with the electronics)• A gasket to place on the isolation valve• A straight edge ruler/scale• A tag to place on the isolation valve• Bolts

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Chapter 4. Inserting T17 Transducers into the Pipe

4.2.2
1.

Mounting the Insertion Mechanism

Before mounting the mechanism on the isolation valve, refer to Figure 7 below to familiarize yourself with its
components:• junction box• barrel• packing gland• transducer

Note:

Explosion-proof boxes may not be mounted on the end of a transducer during shipment.

IMPORTANT: For an extended range operation meter, the upstream and downstream transducers are different, and itis crucial to the meter operation that the correct transducer be installed in the correct location. The
upstream transducer has a 180° head, the downstream transducer has a 6° offset, or 174° head, and theinsertion mechanism and transducer have alignment marks.

Junction Box

Packing GlandBarrelTransducer

Figure 7: Insertion Mechanism Assembly with T17 Transducer

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Chapter 4. Inserting T17 Transducers into the Pipe

2.

Visually inspect the transducer to make sure the top Swagelok fitting is not loose.

IMPORTANT: The stop ring at the end of the barrel is supposed to be loose. DO NOT tighten the Swagelok fitting or
you could change the transducer alignment.

3.

Remove the four bolts that fasten the barrel to the packing gland.

Note:

Swagelokis a registered trademark of the Swagelok Company.

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Chapter 4. Inserting T17 Transducers into the Pipe

4.

Retract the barrel from the packing gland so that the transducer head is recessed in the packing gland. You willhear the stop ring click when the transducer is fully recessed.

5.

Visually inspect the mechanism to make sure the transducer is recessed in the packing gland. Again, make surethe top Swagelok fitting is secure and hand tight.

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Model T17 Installation Guide

Chapter 4. Inserting T17 Transducers into the Pipe

6.

Lift the gasket and insert the packing tool into the packing nut. Turning the packing tool clockwise, tighten thepacking material so that the barrel stays up without support.

7.

Place a gasket on the isolation valve.

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Chapter 4. Inserting T17 Transducers into the Pipe

8.

Identify the upstream and downstream transducer assemblies.

For Standard Velocity Range applications, the upstream and downstream nozzle designations are interchangeable.
The system is bi-directional.
For Extended Velocity Range applications, the system is not bi-directional. Note which valve is designated upstream
and downstream on the pipe. Identify the upstream and downstream insertion mechanism assemblies. The
downstream assembly is labeled with an alignment mark on the Barrel flange, and an associated scribe line on thetransducer tube near the connector end (see the figure below).
The downstream transducer head is angled 6° and must face into the flow.

9.

38

Proceed with either the upstream or downstream assembly.

Model T17 Installation Guide

Chapter 4. Inserting T17 Transducers into the Pipe

10. Lift the insertion mechanism by the barrel and place the insertion mechanism on the isolation valve.

11.

Line up the flange holes and bolt the packing gland to the isolation valve.

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39

Chapter 4. Inserting T17 Transducers into the Pipe

12. Using the packing tool, tighten the packing nut again until the nut is recessed.

WARNING! The packing material must be securely packed before the isolation valve is opened.

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Chapter 4. Inserting T17 Transducers into the Pipe

4.2.3

Aligning the Downstream Transducer for Extended Range Installations

Note:

Only the downstream transducer flange alignment is crucial to the functionality of the meter. For installationof the upstream transducer, see “Mounting the Insertion Mechanism” on page 34.

Note:

This step of the installation requires two people. One person should support the barrel and one person
should operate the alignment fixture.

Note:

Although the images in this section do not show the gasket referenced in “Preparing for Installation” onpage 33, that gasket is crucial to sealing the assembly.

For extended velocity range applications, the head of the downstream transducer is angled at 6° so that it points
upstream (into the flow) by 6°. This allows the ultrasonic signal to be pushed into alignment at very high flow rates. At
low flow rates, the beam is wide enough to tolerate the initial 6° misalignment.

1.

Locate the supplied alignment tool shown below (part number 568-120). This tool is used to check and possibly
fine-tune the alignment by rotating the Barrel assembly prior to final tightening of the mounting nuts and studs.

Note:

Although this process ensures optimum performance, it is not required for proper operation.

2.

Find the scribe line on the downstream transducer tube near the transducer end with the BNC connector. This
scribe line indicates the direction of the angled transducer head. Verify by direct observation that the scribe lineon the transducer lines up with the alignment marking on the flange at the top of the Barrel. If it does not, contact
Panametrics for assistance.

3.

The primary method for ensuring that the angled transducer head is pointing in the correct direction uses thealignment marks on the downstream nozzle and the downstream Barrel assembly (see the figure below). The
alignment marking on the flange at the top of the Barrel must be in alignment with the nozzle, such that themarking falls between the bolt holes straddling the upstream to downstream centerline, as shown below.

Model T17 Installation Guide

41

Chapter 4. Inserting T17 Transducers into the Pipe4.

Before proceeding, verify that the valve and insertion mechanism are fully bolted in place. Each stud should
extend far enough beyond its nut to allow the alignment tool to rest on the stud. Fit the alignment fixture over thenozzle studs so that the two studs straddling the centerline on the nozzle are inserted into the holes on the fixtureof the corresponding flange size and rating (3”, 150# or 300#).

5.

Adjust the leveling wheel so that the bubble in the level is centered between the two tick marks on the vial.

6.

Remove the alignment fixture from nozzle studs.

7.

Place two sets of studs, washers and nuts into the flange at the top of barrel assembly, straddling the alignment
mark. Nuts and washers should not be installed on the side of the flange with the serrated raised face.

8.

Place the alignment fixture over the two studs in the flange at the top of the barrel assembly, and rotate thebarrel flange until the bubble aligns between the tick marks on the vial. Slowly press the flange toward theinsertion mechanism flange until the gasket and raised faces of both flanges are mated. The studs should also
engage the holes in the insertion mechanism flange. If desired, the barrel flange can be rotated slightly tomaintain the bubble alignment on the gauge.

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Chapter 4. Inserting T17 Transducers into the Pipe

9.

Remove the fixture and install the remaining studs, washers, and nuts. Tighten them to the correct torque.

10. Place a tag on the isolation valve stating the following:
DO NOT OPERATE (CLOSE) WHEN
TRANSDUCER IS INSERTED INTO PIPE.
11.

Refer to the flowmeter Startup Guide to make the transducer electrical connections.

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Chapter 4. Inserting T17 Transducers into the Pipe

4.3

Connecting an XAMPThis section explains how to correctly install and assemble an XAMP into a transducer junction box. Although one
type of junction box is used as an example in the steps below, the procedure applies to all three possible junction box
options.
1.

2.

Place a 3/4” NPT compression fitting on the stem of the transducer closer to the BNC end.
Torque the fitting into one of the 3/4” NPT ports of the junction box, with at least five threads engaged. After thefitting is torqued into place, ensure that the BNC head of the transducer extends slightly past the ground screw
bosses as shown in Figure 8 below:

Figure 8: Torquing Reducer into NPT Port3.

If the BNC head extends too far into the junction box, it will make the assembly more difficult by reducing theamount of area available to properly store the excess cable. If the BNC head is not positioned approximately
where it is pictured in the image above, loosen the compression fitting and adjust the transducer. Then,
re-tighten the compression fitting after this is completed.

4.

Torque the cable gland coming from the electronics main housing into the other 3/4” NPT port until there are atleast five threads of engagement (see Figure 9 below).

Figure 9: Torquing the Cable GlandWith the transducer and the cable gland assembled, the junction box should now look like Figure 10 below:

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Chapter 4. Inserting T17 Transducers into the Pipe

Figure 10: Assembled Transducer and Cable Gland
5.

First, connect the right-angle male BNC plug to the exposed BNC cable from the cable gland assembly, as shownin Figure 11 below.

Figure 11: Connecting BNC Plug to Cable
6.

Connect the female BNC plug of the XAMP to the male BNC transducer head, as shown in Figure 12 below:

Figure 12: Female Plug to Male BNC HeadModel T17 Installation Guide

45

Chapter 4. Inserting T17 Transducers into the Pipe

7.

Wrap the extra length of cable around the perimeter of the junction box such that the BNC heads do not rest on
other cables or on each other. An image of this is shown in Figure 13 below.

Figure 13: BNC Heads
8.

Place the XAMP body into the junction box (see Figure 14 below), resting the puck gently on the cables below it.
Ensure that the cables of the XAMP rest naturally according to the slant at which they exit the epoxy, to reducestress and strain on the joint. The XAMP should remain still, and the cap of the junction box should rotate freely
around the XAMP.

Figure 14: Junction Box Cap
9.

Place the cover of the junction box over top of the XAMP and tighten the cover until the unit is closed and secure.
Engage the set screw to discourage tampering or removal (see Figure 15 below).

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Chapter 4. Inserting T17 Transducers into the Pipe

Figure 15: Set Screw of Junction Box

Note:

To disconnect or uninstall the XAMP from the assembly, just reverse the procedures above.

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Chapter 4. Inserting T17 Transducers into the Pipe[no content intended for this page]48

Model T17 Installation Guide

Chapter 5. Maintaining the T17 Transducers

Chapter 5. Maintaining the T17 Transducers
5.1

Removing Transducers

After the transducers are properly installed into the pipe nozzles as described in Chapter 4.“Inserting T17 Transducers
into the Pipe”, the T17 transducers require no additional adjustments.
Periodic inspection of the installation to verify the torque on the mounting bolts may be required, if erratic flow ratemeasurements are observed.
If you suspect something is wrong with a transducer or need to replace a transducer, use the removal procedure that
follows.

5.1.1

Using the Insertion Mechanism

Use the steps below to remove transducers that have been installed with the insertion mechanism:

WARNING! Follow all applicable safety codes while performing the following procedures.

1.

Disconnect power from the flowmeter.

WARNING! Make sure the power is disconnected before performing the following steps.

2.

3.

Disconnect the transducer cables at the junction box.
On the insertion mechanism, remove the bolts that fasten the barrel flange to the packing gland flange.

Model T17 Installation Guide

49

Chapter 5. Maintaining the T17 Transducers

4.

Retract the barrel from the packing gland until the transducer head is recessed in the packing gland. The stopring will “click” when the transducer is fully recessed.

5.

CLOSE THE ISOLATION VALVE!

WARNING! Make sure the isolation valve is closed before performing the following steps.

6.

50

After closing the isolation valve, remove the bolts that fasten the packing gland flange to the isolation valve
flange, and lift the insertion mechanism by the barrel to remove it from the isolation valve.

Model T17 Installation Guide

Chapter 5. Maintaining the T17 Transducers

7.

Install a new flange gasket on the isolation valve. Then, fasten a “blind” flange onto the isolation valve with thebolts removed in the previous step.

8.

Disconnect the junction box on the end of the transducer by loosening the compression fitting.

9.

Repeat steps 4 through 9 for the other transducer.

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51

Chapter 5. Maintaining the T17 Transducers[no content intended for this page]52

Model T17 Installation Guide

Chapter 6. Specifications

Chapter 6. Specifications
6.1

T17 Transducer Physical Specifications
Applications:Hazardous Area, Flare Gas, Hydrocarbon Gases, Saturated SteamInstallation Type:

WettedStandard: Titanium

Material:

Optional: 316 Stainless Steel, Monel® or Hastelloy®

Field Mounting:

Flowcell, Hot or Cold Tap

Process Connection:

Flanged, 3 in. (80 mm)

Holder Type:Insertion Mechanism

Holder Ratings:

150#, 300#, 600#
Standard: 100 kHz

Operating Frequency:

Optional: 50 kHz and 200 kHz

Pressure Range:

0 to 2700 psig Standard,
0 to 1500 psig for USA/Canada Certified ProductsElectrical Rating:Ambient Temperature Range:
Process Temperature Range:

6.2

200 V peak-to-peak, 5 mA
–40° to +140°F (–40° to +60°C)–364° to +572°F (–220° to +300°C)-55ºC to 150ºC for T5 Max Only

T17 Transducer Certifications
North American -Class I, Division 1, Group B, C, D

Explosion proof:

II 2 G Ex db IIC T6...XX Gb (T code dependent on Process Temperature)

European/International
Flameproof:

North American -Tamb –40° to +140°F (–40° to +60°C)
SIRA 20ATEX10001X, IECEx SIR 20.0006X
IP66, TYPE 4X

Weatherproof:

European/International Weatherproof:

6.3

200Vpp, 5mA
IP 66

Special 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 T17 assembly does not exceed the permitted
ambient of -40°C to +60°C, regardless of process temperature.
The T17 transducers made of titanium (where ff = Ti) are potential ignitions sources when subjected to impact orfriction, which shall be taken into consideration during installation.

Model T17 Installation Guide

53

Chapter 6. Specifications

The T17 have non-conducting coating which may generate an ignition-capable level of electrostatic charge undercertain extreme conditions. The user shall take the necessary precautions to minimize 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 thesurface of the equipment. Cleaning should be done only with a damp cloth.
The temperature classification rating of the T17 assemblies is dependent upon the maximum process temperature(see table below).
Table 4: Temperature Classification Rating of the T17
Model (where aa = T17)

Process temperature

T-Class

aa-bb-cc-dd-LT-ff-gg-hh-ii-jj-zz-220ºC to +85ºC

T6+85ºC to +100ºC

T5-55ºC to +85ºC

T6+86ºC to +100ºC

T5+101ºC to +135ºCT4

aa-bb-cc-dd-NT-ff-gg-hh-ii-jj-zz

aa-bb-cc-dd-HT-ff-gg-hh-ii-jj-zz

aa-bb-cc-dd-XT-ff-gg-hh-ii-jj-zz

54+136ºC to +150ºC

T3-50ºC to 85ºC

T6

+86ºC to +100ºC

T5+101ºC to +135ºC

T4+136ºC to +200ºC

T3+201ºC to +250ºC

T2-180ºC to 85ºC

T6

+86ºC to +100ºC

T5+101ºC to +135ºC

T4+136ºC to +200ºC

T3+201ºC to +300ºC

T2

Model T17 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, atthe sole discretion of Panametrics. Fuses and batteries are specifically excluded from any liability. This warranty iseffective 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 ofunauthorized 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 aparticular 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 theauthorized 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 theowner 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 theowner’s approval to proceed, the instrument will be repaired and returned.

Model T17 Installation Guide

55

Warranty[no content intended for this page]

56

Model T17 Installation Guide

Customer Support Centers
U.S.A.

The Boston Center
1100 Technology Park Drive
Billerica, MA 01821
U.S.A.
Tel: 800 833 9438 (toll-free)
978 437 1000
E-mail: panametricstechsupport@bakerhughes.com

IrelandSensing House
Shannon Free Zone East
Shannon, County Clare
IrelandTel: +353 (0)61 470291
E-mail: panametricstechsupport@bakerhughes.com

Scan here for Panametrics
support and service information

Copyright 2024 Baker Hughes company.
This material contains one or more registeredtrademarks of Baker Hughes Company and its
subsidiaries in one or more countries. All third-party
product and company names are trademarks of theirrespective holders.
BH048C21 EN G (04/2024)