Endress+Hauser Micropilot FMR20 - Page 20

Installation Micropilot FMR20 Modbus RS485
20 Endress+Hauser
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 11 Function of flooding protection tube
1 Empty space
2 O-ring (EPDM) seal
3 Blocking distance
4 Max. level
The tube is screwed directly onto the sensor and seals off the system by means of an O-ring
making it air-tight. In the event of flooding, the empty space that develops in the tube ensures
a defined detection of the maximum level directly at the end of the tube. Due to the fact that
the Blocking distance is inside the tube, multiple echoes are not analyzed.
Configuration parameters for flooding protection tube
Configuring the blocking distance when using the flooding protection tube
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Navigate to: Main menu → Setup → Advanced setup → Blocking distance
 Enter 100 mm (4 in).
Perform a mapping after the flooding protection tube has been installed and the
blocking distance has been configured
1. Navigate to: Setup → Confirm distance
 Compare the distance displayed with the actual value in order to start the recording
of an interference echo map.