Panametrics CTF878, Руководство для стартапов

Страница: 32 / 108

Chapter 2.
24 Model CTF878 Startup Guide
Figure 12: Pipe Damping Jacket (cutouts not shown)
3. Install the jacket on the pipe as shown in Figure 13 below. Align the cutouts with the previously marked transducer
locations. Then tighten the clamping screws until some fluid drips from the bottom of the jacket.
WARNING!
The pipe and the dripping fluid will cause severe burns upon contact with bare skin. Also, be sure not
to inhale the fumes generated during the DMP-3 curing cycle.
As the damping material dries (over several hours), its effectiveness increases. Proceed to
Installing Transducers on
page 24.
Figure 13: Pipe Damping Jacket Installed
2.1.11 Installing Transducers
For a given gas and pipe, the CTF878’s accuracy depends primarily on the location and alignment of the transducers.
Now that the clamping fixture is in place, use the following guidelines to install the four transducers. For detailed
instructions on installing clamp-on transducers, refer to the supplied drawings and the Panametrics Sensing Gas
Transducer Installation Guide. For CFT-V clamping fixtures, follow the steps below. For CFT-PI clamping fixtures,
proceed to Mounting Transducers on page 26.
2.1.11.1 Preparing for Installation with a CFT-V Clamping Fixture
Before the transducers can be mounted on the pipe to transmit and receive signals effectively, a hole must be cut in
the damping material at each transducer location. To complete this important step, proceed as follows:
1. Place a transducer in one of the sliders and tighten it down until it rests flat on the damping material.
2. Using a felt-tipped ink marker, draw the contour of the transducer's footprint on the damping material.