Ran into a situation last week that taught me an important lesson.

A customer took a tank out of service for major repairs, so they moved the Siemens radar level transmitter to a different tank.   Even though the radar unit performed flawlessly on the first tank, they ran into difficulty getting the correct level readout in its new installation.  

The mechanical guy had moved and remounted the transmitter.   The I&E tech had wired it correctly, and then did a master reset before starting a fresh configuration.  After going through the configuration, he couldn’t get a valid level readings in the upper fourth of the tank level.

The second tank was near its full level and the technician (properly) wanted to wait to do an Auto-Learn scan until the tank level approached empty.  In the meantime, we were all scratching our heads trying to figure out why the upper level readings were not correct.  

In frustration, I finally resorted to pulling out a manual . . . Read the rest of this entry »