Panametrics C-RL, Instruction Manual

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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 180
o
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.
Transduc e r
Pip e
Signal Path
End Vi e w