Panametrics C-ET User manual

panametrics.com
Flow
916-083 B
August 2021
Model C-ET
Ultrasonic Flow Transducer System
Installation Guide

Flow
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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.
Model C-ET
Ultrasonic Flow Transducer System
Installation Guide
916-083 Rev. B
August 2021

ii
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Model C-ET Installation Guide iii
Contents
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Transducer Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2.1 Solid Sheet Couplants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.3 Installing the C-ET Transducer System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3.1 Choosing an Installation Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.1.1 Application Guide - Wall Thickness (in inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3.1.2 Application Guide - Wall Thickness (in millimeters). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.1.3 Application Guide — Cryo Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3.2 Obtaining the Transducer Spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.2.1 Determining Special Transducer Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.2.2 Pipe Survey to Determine OD and Wall Thickness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
1.3.2.3 Fluid Soundspeed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.3 Installing the V Clamping Fixtures and Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.3.1 Tools and Equipment Needed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.3.2 Setting the Transducer Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.3.3.3 Installing the Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
1.3.3.4 Preparing the Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
1.3.3.5 Mounting the Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1.3.4 Installing the PI Fixture and Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.3.4.1 Tools and Equipment Needed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.3.4.2 Preparing the Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
1.3.4.3 Surveying the Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.3.4.4 Installing the First Mounting Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.3.4.5 Installing the Second Mounting Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
1.3.4.6 Mounting the Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
1.4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
1.5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Contents
iv Model C-ET Installation Guide

Model C-ET Installation Guide vii
Preface
Information Paragraphs
•Note paragraphs provide information that provides a deeper understanding of the situation, but is not essential
to the proper completion of the instructions.
•Important 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! paragraphs provide information that alerts the operator to a hazardous situation that can cause
damaPanametrics to property or equipment.
•Warning! paragraphs provide information that alerts the operator to a hazardous situation that can cause injury
to personnel. Cautionary information is also included, when applicable.
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.
Auxiliary Equipment
Local Safety Standards
The user must make sure that he operates all auxiliary equipment in accordance with local codes, standards,
regulations, or laws applicable to safety.
Working Area
WARNING! Auxiliary equipment may have both manual and automatic modes of operation. As equipment can
move suddenly and without warning, do not enter the work cell of this equipment during automatic
operation, and do not enter the work envelope of this equipment during manual operation. If you do,
serious injury can result.
WARNING! Make sure that power to the auxiliary equipment is turned OFF and locked out before you perform
maintenance procedures on the equipment.
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.

Preface
viii Model C-ET Installation Guide
Environmental Compliance
Waste Electrical and Electronic Equipment (WEEE) Directive
Baker Hughes is an active participant in Europe’s Waste Electrical and Electronic Equipment (WEEE) take-back
initiative, directive 2002/96/EC.
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-ET Installation Guide 1
1.1 Introduction
The clamp-on extended temperature (C-ET) range transducer system provides liquid flow measurement in very
low- or very high-temperature applications. It represents Panametrics’s latest generation of non-contact,
demanding measurement transducers and capitalizes on more than 20 years of experience from the OKS
transducer system.
The C-ET system is designed to isolate the transducer from the extreme process conditions, enabling it to measure
high temperature hydrocarbon liquids, superheated water, heat transfer oils and cryogenic liquids. In addition, the
C-ET system retains all of the characteristics that make ultrasonic technology best for critical process
measurements under harsh conditions.
The C-ET clamp-on ultrasonic flow transducers are used exclusively with the Panametrics line of ultrasonic
flowmeters. These transducers are used to measure the flow of various liquids through pipes having diameters from
3 in. (75 mm) to 24 in. (600 mm). This document provides details on the following topics:
• Transducer Construction
• Installation
• Maintenance
• Specifications
1.2 Transducer Construction
The C-ET transducer consists of a C-RS transducer, a waveguide, and a holder pre-assembled from the factory.
The transducer assembly includes a 316 stainless steel housing with a plastic wedge attached and a BNC-type
electrical connector. The transducer features integral 3/4” NPT-M threads for mounting a junction box and integral
5/8-24 threads for mounting a submersible connector if desired (see Figure 1).
Figure 1: Transducer Assembly
1.2.1 Solid Sheet Couplants
Panametrics supplies a solid sheet couplant for C-ET transducer installations. The purpose of the couplant is to
provide reliable transmission of ultrasound between two adjacent solid surfaces. Generally speaking, couplants
perform this task by excluding air from between the adjacent surfaces. Therefore, the C-ET transducers should be
pressed tightly against the pipe surface.
BNC Connector
5/8” UNF Thread
3/4” NPT Thread
Holder
Waveguide

2 Model C-ET Installation Guide
Panametrics provides a variety of solid sheet couplants for extremely high- and low-temperature applications.
Standard Panametrics couplants are listed in Table 0.
Part No. Type Temp. Range Use
CPL-12 Standard –20° to +400°C (-4° to +752°F) Permanent
CPL-13 Cryogenics –250° to 100°C (-418° to +212°F) Permanent
CPL-14 Gold Only Applications –20° to +400°C (-4° to +752°F) Permanent
CPL-15 Zinc Only Applications –20° to +400°C (-4° to +752°F) Permanent
CPL-S Special As required Difficult Applications*
*Installations where gold or zinc cannot be used. Consult Panametrics for these applications.