Sensor Positioning - Teledyne ADFM Pro20 Installation And Operation Manual

2.6.2 Sensor Positioning

Figure 2-24 Sensor positioning
Figure 2-25 Mount sensor flat on channel floor
Place the sensor in the straightest possible run, typically at a
minimum of 5 channel diameters downstream from a bend and 2
channel diameters upstream from a bend. The sensor should be
securely positioned, with minimal potential for fouling or
damage from sediment or debris. In installations where high
velocity/debris will be present, you may consider protecting the
entire cable length (i.e., with user-supplied rigid conduit or metal
framing).
In all installations, the sensor mounting must be firmly anchored
flat against the invert (center) of the channel (zero pitch, zero
roll).
Note
If debris and/or silt are expected, the sensor must be elevated
with the proper fairing/spacer combination to ensure proper
operation, as described in Section 2.6.7.
ADFM® Flow Meter
Section 2 Setup and Installation
FLOW
> 5 Channel > 2 Channel
= =
NO
NO
YES
2-27