of the structure in which the fluid is flowing. If the sensor
is too close to the wall, reflections may occur which could
cause inaccuracies in the level measurement. The beam
angle of the transmitted signal from the sensor face is a
maximum of 6 degrees. To determine the distance the
sensor must be mounted from the wall, multiply the Vcal
distance times 0.0524. This will give the distance required
from the wall to the sensor housing.
The exit hole for the sensor cable on the top of the
housing is a 3/4" NPT nipple which is used to mount the
sensor to the mounting bracket and connecting the
conduit for the cable.
The cable must be run in metallic
conduit to prevent any stray noise interference from
affecting the meter's operation.
The mounting bracket provided with the sensor can be
mounted directly to the wall for Vcal distances of 60
inches or less. An extension or mounting brace to the
mounting bracket will be required for Vcal distances
greater than 60 inches.
When installing the sensor, it is imperative that it be
level. A level should be placed on top of the sensor and
adjustments made to the mounting bracket to ensure the
sensor face is level to fluid.
This completes the FB-1 sensor installation procedure.
Refer to the Electronic Wiring Section for connecting the
sensor cable to the electronics.
