Noise Or Weak Surface Echoes; Power Module Replacement - Emerson Rosemount 3308A Reference Manual

Service and Troubleshooting
August 2017
6.5.4 Noise or weak surface
In difficult applications where the surface echo peak is low compared to the noise, it is recommended to
set the Performance Mode to High Performance. A low surface peak compared to the noise might be
caused by a turbulent surface, foam, low dielectric constant, plastic tanks, and so on.
If the Performance Mode is set to High Performance, each update is based on an increased number of
measurements (radar sweeps), which gives improved accuracy and robustness, as well as decreased
noise in the output value. However, the battery life is significantly reduced (between 40-60 percent).
1. Select Service Tools > Echo Tuning > Advanced.
2. Under Performance Mode, select High Performance, and then select Send.
6.6

Power module replacement

Replace the power module with a new Black Power Module, SmartPower
701PBKKF.
1. Replace the power module.
1.
2. In AMS Wireless Configurator or Field Communicator, run Install New Power Module setup.
a. Select Service Tools > Maintenance > Routine Maintenance.
b. Select Install New Power Module and follow the on-screen instructions.
1. The High Performance mode is not supported on all models.
106
PRELIMINARY
echoes
2. 3.
Dispose of in accordance with
Government regulations
Reference Manual
00809-0100-4308, Rev CA
(1)
™
Solutions model number
Keep cover tight
4.
Service and Troubleshooting