Panametrics C-ET, Installation Manual

Page: 9 / 50

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