Troubleshooting guide

96
Reference Manual
00809-0100-4308, Rev BA
Section 6: Service and Troubleshooting
December 2014
Service and Troubleshooting
6.5.3 Interface measurements with fully submerged probes
The Measurement Mode Interface Level with Submerged Probe is used to handle interface
measurements when the product level is not visible, for example in a full chamber pipe as
illustrated in Figure 6-17. In this case the probe is fully submerged into the upper product, and
only the interface level is detected by the transmitter.
Even if the upper product level drops, it is ignored by the transmitter which continues to
measure only the interface level. If the product level drops, the air filled region in the upper part
of the pipe will slightly reduce the measurement accuracy of the interface level. To achieve high
accuracy in this Measurement Mode the probe must be fully submerged.
To set the Measurement Mode to Interface Level with Submerged Probe, do the following:
1. From the Home Screen, go to Configure > Manual Setup > Level Setup >
Environment.
2. Under Measurement Mode, select Interface Level with Submerged Probe
(Interface Only in Field Communicator) and then click Send.
Note
Do not set Measurement Mode to Interface Level with Submerged Probe in “standard”
applications when both Product Level and Interface Level are measured.
Figure 6-17. Interface Level Measurements in a Full Chamber
Note
Adjust Interface Threshold if the interface level pulse is not detected.
Interface Distance
Interface Level
Product Level is ignored
Interface Level is measured