Emerson Rosemount 3814 - Page 11

1.3.2 Pipeline cleaning maintenance
WARNING
BURST HAZARD
Before pipeline cleaning and maintenance (“pigging operations”), remove
straightening vanes or flow conditioners. Failure to do so may cause excessive
pressure in the meter system, resulting in serious injury/death or equipment
damage.
Straightening vanes or flow profilers must be removed during pipeline cleaning
maintenance operations (“pigging operation”). If the meter run is pigged with a
flow conditioner in line, pressure may build up and cause the pipes and flanges
to burst and severely injure personnel. The excessive pressure may damage
the meter or the transducer ports may collect debris which may impede data
acquisition and flow measurement.
1.3.3
High Viscosity piping requirements
The piping requirements for High Viscosity meter applications are shown in
Figure 1-5.
Maintenance and Troubleshooting Manual Routine Maintenance
00809-0100-3814 January2023
Rosemount 3814 Liquid Ultrasonic Flow Meter 11