If you want to continue measuring despite impending external radiation, then the “RID” version is the right choice. The measurement continues without interruption, even if external radiation is present. External radiation is detected because of its different energy. The detector changes over to a second measuring channel and continues the measurement without error. This patented process makes the system particularly reliable. RID has been field tested for many years. In the new LB 470 series, operation with RID has been made significantly more user-friendly, making system calibration fool-proof!
The level measurement system with RID consists of a Co-60 measuring source and the UniSENS rod detector or the high sensitive SuperSENS detector along with a separate evaluation unit for display and operation. The detector mounted at the measuring point is connected to the evaluation unit LB 470RID via a two-wire cable.
As the following figure shows, the LB 470RID can be used both as a level measurement and as a level switch measurement.