
105
Reference Manual
00809-0100-4811, Rev DA
Section 6: Service and Troubleshooting
January 2015
Service and Troubleshooting
By adjusting the amplitude threshold T2, the product surface is detected correctly, as illustrated
in Figure 6-12.
Figure 6-12. Waveform Plot after Threshold T2 was Adjusted
To adjust the amplitude thresholds, select HART command [1, 4, 5, 3]
or
1. Start RCT.
2. Select the Device Commands option from the View menu.
3. Open the Details folder.
4. Select the Set Nominal Thresholds option.
The thresholds T2 and T3 should be set to about 50% of the measured signal amplitude for the
product surface and the interface peaks, respectively.
Note
Amplitude thresholds should not be set to values less than 3.
Note
Check that the dielectric constant parameter setting is reasonably close to the actual dielectric
constant value of the upper product before changing the amplitude thresholds.
Note
Default amplitude thresholds can be set by typing 0 as the new threshold value.
P1
P2
T1
T2
T3
Amplitude
100
80
60
-60
40
-40
20
-20
0
100
50
0
150
200
250
After T2 is adjusted, the product surface
is correctly detected
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