Figure 6-4: Surface Threshold Is Too Low
0
A. Amplitude
B. Distance
C. Disturbing echo misinterpreted as product surface
D. Actual product surface
By adjusting the Surface Threshold the product surface is properly detected as illustrated
in
Figure 6-5: Echo Curve Plot after Surface Threshold Was Adjusted
A. Amplitude
B. Distance
C. After Surface Threshold is adjusted the product surface is correctly detected.
Example 2: Interface peak not found
In interface applications where the bottom product has a relatively low dielectric constant
(<40), or if the signal is attenuated in the upper product, the amplitude of the reflected
signal from the interface is relatively low and difficult for the transmitter to detect. In such
a case it may be possible to detect the reflected signal from the interface if the Interface
Threshold is adjusted.
Service and troubleshooting
Reference Manual
February 2020
00809-0100-4308
124
Rosemount 3308 Series
Summary of Contents for Rosemount 3308A
Page 8: ...Contents Reference Manual February 2020 00809 0100 4308 viii Rosemount 3308 Series ...
Page 10: ...Introduction Reference Manual February 2020 00809 0100 4308 10 Rosemount 3308 Series ...
Page 22: ...Transmitter overview Reference Manual February 2020 00809 0100 4308 22 Rosemount 3308 Series ...
Page 74: ...Installation Reference Manual February 2020 00809 0100 4308 74 Rosemount 3308 Series ...
Page 96: ...Configuration Reference Manual February 2020 00809 0100 4308 96 Rosemount 3308 Series ...