Flowline LU78 EchoSwitch - Manual (Page 27)

Rev A MN300282 27 of 34
INSTALLATION (cont.) Step Seven
Fitting Selection: Check the part number to determine the required fitting mount size and thread type.
EchoSwitch® is commonly installed in tank adapters, flanges, brackets or standpipes. Note: Always include the
gasket when installing the EchoSwitch®.
1. Tank Adapter: Select a tank adapter fitting, such as the LM52‐1890 for the LU74 Series or the LM52‐
2890 for the LU74 & LU78 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.
c. Always mount the tank adapter so the majority of the fitting is outside the tank.
i. Never mount the tank adapter upside down or the bulk of the material is inside the
tank.
2” Tank Adapter
Socket x Thread
Tank Adapter
w/ 2”x 1” 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. Core Out Concrete: Applications where tank a concrete tank ceiling that has been cored out
can also be considered as a riser type application. In these applications a 2:1 ratio (Inner
Diameter to Core Height) for the diameter of the core.
b. LU74 & LU78 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).
c. LU77 Series:
Riser Specifications
Inner
Diameter
Maximum
Height
2” (5cm)
4” (10cm)
6” (15cm)
3” (7.6cm)
8” (20cm)
12” (30cm)
Note: Do not exceed the dimensions listed above.
Note: If attempting to raise the
sensor above the top of the tank
to allow for a higher fill capacity,
avoid the use of tall and narrow
risers. The example to the left
exceeds the dimensions listed in
the Riser Specifications chart.
Use a larger tank adapter which
takes into account the Riser
Specifications.