Flowline LU27 EchoSonic II - Manual (Page 9)

9
Mounting with a Stand‐Pipe:
A stand‐pipe may be used to dampen turbulence, separate surface foam from the point of
measurement or increase performance in heavy vapor. When mounting the sensor in a
stand‐pipe, the minimum diameter of the pipe is 2”. Larger diameter pipes can be used. The
pipe should be attached with a coupling and reducer bushing. The pipe length should run
the measurement span and the bottom of the pipe should remain submerged at all times to
prevent foam from entering the pipe. Cut the bottom end of the pipe at 45° and drill a
1/4”pressure equalization hole high in the dead band. The pumps should not drive liquid
past the open end of the standpipe which causes the liquid in the pipe to oscillate.
Stand‐Pipe Mounting
IMPORTANT MOUNTING GUIDELINES:
1) Never mount the sensor at an angle.
2) Liquid should never enter the dead band.
3) Mount at least 3” from the side wall.
4) Never mount in a vacuum.
5) Do not obstruct the sensor’s beam width.