Panametrics C-RL User manual

panametrics.com
Flow
916-062 B
July 2021
Model C-RL
Ultrasonic Flow Transducer
Instruction Manual

panametrics.com
Copyright 2021 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.
Flow
Model C-RL
Ultrasonic Flow Transducer
Installation Guide
916-062 B
July 2021

ii
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Model C-RL User’s Manual iii
Information Paragraphs
Note: These paragraphs provide information that provides a deeper understanding of the situation, but is not
essential to the proper completion of the instructions.
IMPORTANT: These paragraphs provide information that emphasizes instructions that are essential to proper setup
of the equipment. Failure to follow these instructions carefully may cause unreliable performance.
Safety Issues
Auxiliary Equipment
Local Safety Standards
The user must make sure that he operates all auxiliary equipment in accordance with local codes, standards,
regulations, or laws applicable to safety.
Working Area
CAUTION! This symbol indicates a risk of potential minor personal injury and/or severe damage to
the equipment, unless these instructions are followed carefully.
WARNING! This symbol indicates a risk of potential serious personal injury, unless these
instructions are followed carefully.
WARNING! It is the responsibility of the user to make sure all local, county, state and national
codes, regulations, rules and laws related to safety and safe operating conditions are
met for each installation.
WARNING! For installations in potentially hazardous areas, be sure to read the Certification and
Safety Statements document at the end of this manual before beginning the
installation.
WARNING! Auxiliary equipment may have both manual and automatic modes of operation. As
equipment can move suddenly and without warning, do not enter the work cell of this
equipment during automatic operation, and do not enter the work envelope of this
equipment during manual operation. If you do, serious injury can result.
WARNING! Make sure that power to the auxiliary equipment is turned OFF and locked out before
you perform maintenance procedures on the equipment.

iv Model C-RL User’s Manual
Qualification of Personnel
Make sure that all personnel have manufacturer-approved training applicable to the auxiliary equipment.
Personal Safety Equipment
Make sure that operators and maintenance personnel have all safety equipment applicable to the auxiliary
equipment. Examples include safety glasses, protective headgear, safety shoes, etc.
Unauthorized Operation
Make sure that unauthorized personnel cannot gain access to the operation of the equipment.
Environmental Compliance
Waste Electrical and Electronic Equipment (WEEE) Directive
GE Measurement & Control is an active participant in Europe’s Waste Electrical and Electronic Equipment (WEEE)
take-back initiative, directive 2012/19/EU.
The equipment that you bought has required the extraction and use of natural resources for its production. It may
contain hazardous substances that could impact health and the environment.
In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the
natural resources, we encourage you to use the appropriate take-back systems. Those systems will reuse or recycle
most of the materials of your end life equipment in a sound way.
The crossed-out wheeled bin symbol invites you to use those systems.
If you need more information on the collection, reuse and recycling systems, please contact your local or regional
waste administration.
Visit www.bakerhughesds.com/health-safetyand-environment-hse for take-back instructions and more information
about this initiative.

Model C-RL Installation Guide v
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2 Transducer Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
3 Dampening Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 Installing the C-RL Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1 Choosing an Installation Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Obtaining the Transducer Spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 Installing the V Series Clamping Fixtures and Transducers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.4 What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.5 Installing the PI Fixture and Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.6 What’s Next? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
4.7 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
4.8 Transducer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Contents
vi Model C-RL Installation Guide

Model C-RL Installation Guide 1
1 Introduction
The C-RL clamp-on ultrasonic flow transducers are used exclusively with the Panametrics Measurement & Control
line of ultrasonic flowmeters. These transducers are used to measure the flow of various gases through pipes having
diameters from 3/4 in. (20 mm) to 30 in. (750 mm). Such measurements are independent of the pipe material. This
manual provides details on the following topics:
• Transducer construction
• Dampening material
• Installation
• Maintenance
• Specifications
2 Transducer Construction
A transducer assembly includes a 316 stainless steel housing with a plastic wedge attached and a BNC-type
electrical connector. The transducer features both integral 3/4” NPT-M threads for mounting a junction box and
integral 5/8-24 UNEF threads for mounting a submersible connector if desired (see
Figure 1 below).
Figure 1: Transducer Assembly (Ref. dwg. 752-163)
5/8-14 UNEF Thread
Stainless Steel Housing
3/4” NT Thread
Plastic
BNC Connector
3”
4”
Wedge

2 Model C-RL Installation Guide
3 Dampening Material
Panametrics Measurement & Control strongly recommends applying DMP dampening material in all permanent
clamp-on applications to help eliminate noise. The following dampening materials are available:
•DMP-1 is a self-adhesive sheet for applications up to 200°F (93°C): The material comes as two 9.5-in. (24 cm)
wide sheets cut in sufficient length for your application. (Length twice the circumference of the pipe at the
installation site.)
•DMP-3 is a compound for applications over 150°F (65oC). The compound is applied to the pipe with a putty
knife.
• The
Pipe Dampening Jacket (PDJ) is a sheath/jacket with DMP-3 pre-applied to the inside and is also used for
applications over 150oF (65oC). The PDJ is available for pipes 4”, 6”, 8”, 10” and 12” (100, 150, 200, 250 and 300
mm) in diameter.
At a minimum, you should consider applying dampening material if you have any of the following conditions:
• The distance from the nearest butt weld or pipe flange is less than 10 ft (3 m).
• The pipe size is under 16 in. (400 mm) diameter and the gas pressure is 200 psig (1378 kPa) or lower.
• The pipe is deformed (non-circular).
• The pipe is old, with a history of scaling or rust.
• The pipe experiences constant condensation on the outside.
Note:
Consult a Panametrics flowmeter applications engineer or sales engineer if you have any questions
regarding dampening material.
Details for properly installing the dampening material are discussed later in this manual.

Model C-RL Installation Guide 3
4 Installing the C-RL Transducers
Panametrics Measurement & Control offers the following transducer mounting fixtures to suit your applications
needs:
• V1 clamping fixture
• V4 clamping fixture
• V8 clamping fixture
• V12 clamping fixture
• PI clamping fixture
Figure 2 below and Figure 3 on page 4 show the V1, V4, V8, V12 and PI fixture assemblies. Each type of transducer and
fixture requires the installation of dampening material for acoustic isolation.
Complete the steps in the following sections to position and install the transducers, fixtures and dampening material.
Figure 2: The V12 Mounting Fixture

4 Model C-RL Installation Guide
Figure 3: The V1, V4, V8 and PI Mounting Fixtures
V8 Fixture V4 Fixture
PI Fixture
V1 Fixture

Model C-RL Installation Guide 5
4.1 Choosing an Installation Location
To choose an installation location, proceed as follows:
1. Locate the transducer measurement point at least 3 ft (1 m) from any butt welds or flanges, ideally in the center
of a 20 ft (6 m) length of straight pipe. Keep appropriate clearance on either side of the pipe for easy transducer
installation access:
• 6 in. (15 cm) if you are not using a junction box, or
• 9 in. (23 cm) if you are using a junction box.
Note:
To guarantee the specified accuracy of the flowmeter there is no substitute for a straight length of pipe and
a fully-developed flow profile. However, if a straight length of pipe is not available, the transducer location
should be in a position such that the acoustic signal travels through the full distribution of the
under-developed flow profile for best repeatability.
2. Place the transducers as close as possible to the horizontal plane. Locate the transducers on opposite sides of
the pipe 180o apart, ideally at the 3 and 9 o’clock positions.
IMPORTANT: Do not locate the transducers on the top or the bottom of the pipe.
Transducer
Pipe
Signal Path
End View

6 Model C-RL Installation Guide
4.2 Obtaining the Transducer Spacing
Program the required information into the Pipe Parameters menu of the flowmeter User Program to determine the
required transducer spacing. Some applications may require you to conduct a pipe survey before you can obtain the
transducer spacing. Refer to the flowmeter
Startup Guide for more details.
Proceed to the appropriate section to install the transducers and fixtures:
• “Installing the V Series Clamping Fixtures and Transducers” on page 6.
• “Installing the PI Fixture and Transducers” on page 22
4.3 Installing the V Series Clamping Fixtures and Transducers
Installing the V Series clamping fixture and transducers requires the following steps:
• Calculating the transducer spacing
• Preparing the pipe
• Applying the dampening material
• Installing the fixture
• Mounting the transducers
Refer to the following section to properly prepare for installation
4.3.1 Tools and Equipment Needed
Installing the fixture and transducers requires various tools. You will also need additional tools to apply the
dampening material. Refer to
Table 1 below for a complete list of everything you will need.
CAUTION! To maintain ATEX certification, the transducer face must be protected against impact.
This is accomplished by properly installing the transducer into the clamping fixture. All
care must be taken during installation to ensure that the proper protection is provided.
Fixture and Transducers
• straight edge ruler/scale
• permanent marker
• sandpaper
• file
• emery cloth
• ultrasonic thickness gage
• tape measure
• dry towel or rag
• thread sealant (for junction boxes only)
• 7/16” box wrench or 4” adjustable wrench
• 1” box wrench or 10” adjustable wrench
• other safety equipment appropriate for your application
DMP-1 DMP-3 PDJ
• utility knife • gloves
• spatula or putty knife
(to remove access
dampening compound)
• 7/16” box wrench or
a 4” adjustable wrench

Model C-RL Installation Guide 7
4.3.2 Setting the Transducer Spacing
1. If necessary, assemble the fixture as shown below. Make sure the zero points on each ruler are at the same end of
the fixture.
2. Using a ruler (or the ruler printed on the fixture), set one of the mounting blocks at least 1 in. (2.5 cm) from the
edge of the fixture. To move the block, loosen the set screw, slide the block to the desired location and tighten the
set screw. Use the edge of the block shown below as the setting point.
Insert in 4 places
Top View
Zero Point
s
Top View
Mounting Block
Set at 1 in. (2.5 cm)
Zero Point on
Measuring Scales
Set at 1 in. (2.5 cm) using
this edge of block
Set Screw

8 Model C-RL Installation Guide
3. Slide the other mounting block to the calculated spacing plus 1 in. (2.5 cm). For example:
a. Spacing for the first mounting block = 1 in. (2.5 cm)
b. Spacing as calculated by the flowmeter = 0.5 in. (12.5 mm)
c. Second mounting block final location = 1 in. + 0.5 in. = 1.5 in. (2.5 cm + 1.25 cm = 3.75 cm)
The overall spacing between blocks should be either left edge to left edge or right edge to right edge.
Note:
If possible, the second block should also be set at least 1 in.(2.5 cm) from the edge of the fixture.
Top View
Set second block
using this edge
Zero Point on
Measuring Scales
S

Model C-RL Installation Guide 9
4.3.3 Installing the Fixture
During this procedure you will be required to place the fixture and transducers on the pipe more than once, and in
some cases, as many as 3 times. The fixture and transducers are placed on the pipe temporarily for two purposes:
• To mark where the fixture and transducers make contact with the pipe so those sections can be cleaned
• As a reference for placing the dampening material
Use the steps below to begin installation:
1. Remove any pipe insulation from the installation site.
Note:
Make sure you clear an area that is large enough for the transducers and dampening material installation.
2. Disassemble the fixture by removing the four nuts from the threaded rods and pulling apart the two halves of the
fixture.
Note:
Make note of the assembled fixture to make sure you reassemble it the same way. Otherwise, the transducer
spacing will be incorrect.
3. Position the clamping fixture as close as possible to the horizontal plane. The fixture should be positioned so the
transducers will be located on the opposite sides of the pipe 180o apart, ideally at the 3 and 9 o’clock positions.
IMPORTANT: Do not place the fixture on the pipe so that the transducers are at the top or bottom of the pipe.
Note:
Make sure you reassemble the fixture properly to ensure the correct transducer spacing. If the fixture has
rulers on the rails, make sure the zero points on each ruler are at the same end of the fixture as shown below.
Top View
Remove 4 places

10 Model C-RL Installation Guide
4. Install the four nuts onto the threaded rods with the convex side of the nut facing the fixture. Hand tighten each
nut evenly as shown below. Do not use a cross-tightening pattern.
Top View
Mating Half
Top View
Zero on Each
Measuring Scales

Model C-RL Installation Guide 11
Nuts
(2 places)
Nuts
(2 places)
Top View
Side View
1
23
4
Tightening Pattern of Bolts
Tighten equally first Tighten equally second

12 Model C-RL Installation Guide
4.3.4 Preparing the Pipe
1. Using a permanent marker, mark the inside edges of the fixture. These lines indicate where to clean the pipe and
then apply the dampening material. Make sure you mark both sides of the fixture.
2. Remove the fixture.
3. Clean the area between the marks. Remove any loose paint or rust with sandpaper or emery cloth. Make sure to
preserve the original curvature of the pipe. If the finish is mirror-smooth, use the file to roughen the surface.
TIP:
If you are concerned about removing the reference lines during cleaning, use a tape measure and measure
2 ft (60 cm) from one of the reference lines and mark another line (temporary or permanent). This line can be
used as a reference point later.
Make marks here
Top View
and here
Marks
Top View