TD80™ Level Gauging and Overfill Prevention System Product Manual
Page 24 TD80 Installation/ Rev. 2, August 4, 2015
2.3 TD80 Probe and Transmitter Location
2.3.1 Locating the Probe
Before beginning the installation of the probe, consider the location carefully. The nature
of Guided Wave RADAR requires a 4” minimum diameter around the dual rod probe to
be free of metal. The coaxial probe does not have this restriction. The dual rod probe
must be mounted at least 2” away from any internal pipes, fittings, and structural
members. Infeeds, weirs, drains and agitators may cause mechanical damage to the
probe. They will also create turbulence that causes incorrect level measurements. The
dual rod and coaxial probes must be mounted as far as possible from turbulent areas of
the tank. An anchor at the bottom of the probe is also required to prevent probe damage
due to sloshing liquids.
1 Probe is too close to the side of the tank (or other fittings)
2 Probe is too close to the tank infeed
3 Preferred placement. No interference within 2” of the probe
Figure 2-2: Locating the Probe
- - - - - - - - -
Indicates the 4"
diameter which
the probe uses
to measure.
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