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5. Installing the Universal Clamping Fixture and Transducers - UCF
The Universal Clamping Fixture (UCF) acts as a spacing device and a transducer holder. The UCF is available in two
lengths and includes several components. Before you begin the installation, you should verify that your fixture is the
correct length and familiarize yourself with the fixture components.
To maintain ATEX certification the transducer face must be protected against impact. Protection is
IMPORTANT:
provided by properly installing the transducer into the clamping fixture. Care must be taken during
installation to ensure that protection is provided.
5.1 Verify Fixture Length
The UCF is available in 12 in. (30 cm) and 24-in. (60 cm) lengths. Each size fixture can be used for either the single- or
double-traverse method. However, the pipe size ranges listed in Table 2 below must be followed for each method.
Note: The mounting chain or strap provided by GE with your UCF is the one best suited for your application.
5.2 Identifying the UCF Components
The UCF includes the following components (see Figure 4 on page 7):
•
Two adjustable short blocks for use in the double-traverse method
•
Two slide tracks that connect the two blocks
•
A ruler attached to one of the slide tracks to help set the transducer spacing
•
A long block for use in the single-traverse method
The UCF is chained or strapped to the pipe. Two blocks, which are positioned using the transducer spacing calculated
by the flowmeter, are used to hold the transducers in the proper location on the pipe.
6
Table 2: UCF Pipe Size Ranges
Clamping Fixture
Length
12-in.
(30 cm)
24-in.
(60 cm)
Single-Traverse
Double-Traverse
Pipe Diameter
2 to 24 in.
(5 to 60 cm)
2 to 48 in.
(5 to 120 cm)
C-RS Ultrasonic Flow Transducer Installation Guide
Pipe Diameter
2 to 12 in.
(5 to 30 cm)
2 to 24 in.
(5 to 60 cm)
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