Flowline LU29-1 EchoSonic II - Manual (Page 17)

23 MAR 11 EchoSonic II 17 of 24
Rev B MN300610
Installation in existing fittings
If the existing fitting is larger than the threads of the EchoSonic II, select a reducer bushing such as
the LM52-1400 (2” thread x 1” thread) or LM52-2400 (3” thread x 2” thread).
Metal Tanks (LU27 series)
Flowline ultrasonic transmitters have been optimized for use in non-metallic fittings.
1. For best performance, avoid the use of metallic fittings.
a. Use a plastic 2” x 1” reducer bushing, such as the LM52-1400 or a plastic 1” flange,
such as the LM52-1850 for metallic tanks.
2. While installations directly into a 1” metal fitting are not recommended, acceptable results
may be obtained if the 1” fitting is a half coupling in form and the outer diameter of the
coupling is tightly wrapped in vinyl tape to dampen vibrations.
Fitting Selection:
Check the part number to determine the required fitting mount size and thread type. EchoSonic II
is commonly installed in tank adapters, flanges, brackets or standpipes. Note: Always include the
gasket when installing the EchoSonic II.
1. Tank Adapter: Select a tank adapter fitting, such as the LM52-1890 for the LU27 series
or the LM52-2890 for the LU23, LU28 & LU29 series.
a. For best results, select a 2” tank adapter and add a reducer bushing such as the
LM52-1400, thread x thread, reducer bushing.
b. Avoid tank adapter (thread x thread) styles and/or pipe stops forward of the
installed transducer.
2” Tank Adapter
Socket x Thread
Tank Adapter
w/ 2”x1” Reducer Bushing
Tank Adapter
Thread x Thread
Do not use thread x thread
2. Riser: Installations with tall, narrow risers can impede the acoustic signal.
a. LU23, LU28 & LU29 Series: 2” (5 cm) diameter risers should be no taller than 5”
(12.7 cm). Larger diameter risers should be no taller than 12” (30.5 cm).
b. LU27 Series: