Connecting
5.5 Sensor Installation
FUS1010 IP65 NEMA 4X & IP66 NEMA 7
54 Operating Instructions, 01/2013, A5E02951520-AC
Clamp-on Sensor Mounting Modes
The transmitter recommends a mounting mode after analyzing your pipe and liquid data
entries. However, you can install clamp-on sensors in the way that best suits your application
and the sensor type you have purchased.
① ④ Upstream Sensor Sonic Path
② Flow Direction ⑤ Pipe
③ Downstream Sensor
Figure 5-6 Reflect Mount (Pipe shown from above in 12 o'clock position)
Reflect mount is recommended whenever possible. This is the simplest way to mount the
sensors. Also, Reflect mount resists abnormal flow profile conditions such as cross-flow
within the flow stream. Reflect mount supports the AutoZero function, which zeroes the flow
meter automatically without user-participation. In addition, Reflect mount may be the only
possibility if conditions do not allow access to the opposite side of the pipe.
Direct mount provides a shorter sonic beam path. This usually improves performance with
sonically attenuative liquids or pipe materials. Direct mount is recommended for plastic
pipes. Compared to Direct mounting, Reflect mount requires almost double the amount of
mounting length. Therefore, Direct mount may be the only option if the availability of
mounting space is limited.
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