Proline Prosonic Flow 91 Installation
Endress+Hauser 13
3.2.5 Sensor selection and arrangement
The sensors can be arranged differently:
• Mounting arrangement for measurement via one traverse: the sensors are located on opposite
sides of the pipe.
• Mounting arrangement for measurement via two traverses: the sensors are located on the same
side of the pipe.
A0005728
Fig. 8: Sensor mounting arrangement (top view)
1 Mounting arrangement for measurement via one traverse
2 Mounting arrangement for measurement via two traverses
Recommendations
Due to their design and properties, the Prosonic Flow sensors are particularly suited to certain
nominal diameter ranges and pipe wall thicknesses. For this reason, various sensor types are offered
for these different applications for Prosonic Flow W.
Recommendations for sensor type and installation can be found in the following table.
12
Sensor type Nominal diameter Sensor Frequency Sensor ID Type of mounting
1)
Prosonic Flow W
DN 50 to 60 (2" to 2½") 2 MHz W-CL-2F* 2 (or 1) traverses
2)
DN 80 (3") 2 MHz W-CL-2F* 2 traverses
DN 100 to 300 (4" to 12") 2 MHz (or 1 MHz)
W-CL-1F*
W-CL-2F*
2 traverses
3)
DN 300 to 600 (12" to 24") 1 MHz (or 2 MHz)
W-CL-1F*
W-CL-2F*
2 traverses
3)
DN 650 to 4000 (26" to 160") 1 MHz (or 0.5 MHz)
W-CL-1F*
W-CL-05F*
1 traverses
3)
1)
The installation of clamp-on sensors is principally recommended in the 2 traverse type installation. This type of
installation allows the easiest and most comfortable type of mounting and means that a system can also be mounted even
if the pipe can only be accessed from one side. However, in certain applications a 1 traverse installation may be preferred.
These include:
• Certain plastic pipes with wall thickness >4 mm
• Pipes made of composite materials such as GRP
• Lined pipes
• Applications with fluids with high acoustic damping
2)
If pipe nominal diameter is small (DN 60, 2½ " and smaller), the sensor spacing with Prosonic Flow W can be too small
for a two traverse installation. In the case, the 1 traverse type of installation must be used.
3)
0.5 MHz sensors are also recommended for applications with composite material pipes such as GRP and may be
recommended for certain lined pipes, pipes with wall thickness >10 mm, or applications with media with high acoustic
damping. In addition, for these applications we principally recommend mounting the W sensors in a 1 traverse
configuration.
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