Reference Manual
00809-0200-4841, Rev BA
December 2014
Section 3: Installation
10
4.
To avoid detecting unwanted objects in the tank or well, it is advisable to maintain a
distance of at least 1.3 in. from the center line of the transmitter for every foot (11 cm
per meter) range to the obstruction.
5.
No false echoes are generated if the transmitter is located near the side of the tank or
well, and the wall is smooth and free of protrusions. However, there will still be a
reduction in the echo size. It is recommended that the transmitter be mounted no
closer than 12 in. (0,3 m) to the wall to avoid a large reduction in the echo size.
6.
If the transmitter is mounted in an enclosed tank with a domed top, avoid mounting
the transmitter in the center of the tank roof because this could act as a parabolic
reflector and create unwanted echoes.
7.
Avoid applications where heavy condensation could form on the transmitter face.
8.
If the transmitter is mounted in a stand-off or nozzle, the transmitter face should
protrude at least 0.2 in. (5 mm) into the tank.
9.
If the transmitter is used in environments where direct sunlight can cause high surface
temperatures on exposed instruments, a sun-shade is recommended.
Figure 3-2. Considerations when installing in a tank
A. Transmitter is mounted vertically (maximum deviation of 3°).
B. 6° beam half angle.
C. 1.3 in./ft. (11 cm/m). Minimum of 12 in. (0.3 m).
A
C
B
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