Flowline LU84-5161 EchoSpan - Manual (Page 17)

31 MAR 11 EchoSpan 17 of 22
Rev B MN301550
Installation
The EchoSpan should always be mounted perpendicular to the liquid surface and installed using the
provided Viton mounting gasket. Make sure that the fitting and transmitter threads are not damaged
or worn. Always hand-tighten the transmitter within the fitting. Perform an installed leak test under
normal process conditions prior to system start up. Note: The preferred mounting fitting for the LU80
series is the LM52-1400 (2” thread x 1” thread) reducer bushing.
Mounting Guide
1. Do not mount at an angle
2. Liquid should never enter the dead band
3. Side Wall:
a. For LU80 Series - mount at least 2” from the side wall
b. For LU81, LU83 & LU84 Series - mount at least 3” from the side wall
4. Do not mount where obstacles will intrude on sensor’s beam width
a. See Specifications on page 8
5. Do not mount in a vacuum
6. Avoid mounting in the center of a dome top tank.
7. In cone bottom tank, position the sensor over the deepest part of the tank.
Do not install at
angle relative to the
liquid.
Do not install within
3” of tank sidewall.
Do not install with
objects in the beam.
Do not install in
applications with
vacuum.
Installation in existing fittings
If the existing fitting is larger than the threads of the EchoSpan, select a reducer bushing such as the
LM52-1400 (2” thread x 1” thread) or LM52-2400 (3” thread x 2” thread).
Metal Tanks (LU80 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.