Siemens HydroRanger 200 HMI Operating Instructions Manual page 183

2.11.3.8. TVT ms
2.11.3.9. TVT Slope Minimum
2.11.4. TVT Shaper
Allows the manual adjustment of the TVT curve. Use this parameter in
conjunction with SIMATIC PDM.
Index
Values
Related
Use this feature to bias the shape of the TVT curve to avoid selecting false
echoes from fixed objects.
Adjustment to this parameter is best done while viewing the echo profile with
SIMATIC PDM.
The TVT curve is divided into 40 breakpoints, accessible by enabling the point
number as the breakpoint index field. Each breakpoint is normalized to a value
of 0, as displayed in the parameter value field. By changing the breakpoint
value, up or down, the intensity of the bias applied to that breakpoint of the
curve is respectively changed. By changing the value of adjacent breakpoints,
the effective bias to the shaper can be broadened to suit the desired
correction. In the case of multiple false echoes, shaping can be applied along
A5E36281317
Sets the device to ignore false echoes (or pick up true echoes) near
the start of the Echo Profile, in conjunction with 2. 1 1.3.7. TVT dB.
Single-point model
Index
Global
Range: 0 to 9999 milliseconds
Values
Preset: 30 milliseconds
•
Related
•
Enter the time (in ms) for the TVT Curve to decrease from the
TVT dB
point to the TVT Curve baseline.
Enters the minimum slope (in dB/s) for the middle of the TVT Curve.
Single-point model
Index
Global
Range: 0 to 9999 dB/s
Values
Preset: 200 dB/s
•
Related
•
Use this feature to adjust the slope declination, and use it in
2.11.3.8. TVT ms
conjunction with
is selected) to ensure the TVT Curve remains above the false echoes
in the middle of the Echo Profile. Alternatively, if
Slopes, preset is 2000.
Single-point model
Global
Range: -50 to 50
Preset: 0
2. 1 1.3.5. Shaper Mode
HydroRanger 200 HMI – OPERATING INSTRUCTIONS
2. 1 1.3.7. TVT dB
2. 1 1.3.9. TVT Slope Minimum
2. 1 1.3.6. TVT Type
2. 1 1.3.8. TVT ms
(when a Long Flat
Dual-point model
Transducer
Dual-point model
Transducer
2.11.3.7.
Dual-point model
Transducer
2.11.3.6. TVT Type
2.11.3.6. TVT Type
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