Siemens HydroRanger 200 HMI, Руководство по эксплуатации

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Parameter reference
8.6 Setup (2.)
HydroRanger 200 HMI
Operating Instructions, 06/2018, A5E36281317-AC
231
TVT ms (2.11.3.8)
Sets the device to ignore false echoes (or pick up true echoes) near the start of the Echo
Profile, in conjunction with TVT dB (2.11.3.7.) (Page 230).
Index Single-point model Dual-point model
Global Transducer
Values Range: 0 ... 9999 milliseconds
Preset: 30 milliseconds
Related
•
TVT dB (2.11.3.7.) (Page 230)
• TVT slope minimum (2.11.3.9.) (Page 231)
Enter the time (in ms) for the TVT Curve to decrease from the TVT dB (2.11.3.7.) (Page 230)
point to the TVT Curve baseline.
TVT slope minimum (2.11.3.9.)
Enters the minimum slope (in dB/s) for the middle of the TVT Curve.
Index Single-point model Dual-point model
Global Transducer
Values Range: 0 ... 9999 dB/s
Preset: 200 dB/s
Related
•
TVT type (2.11.3.6.) (Page 230)
• TVT ms (2.11.3.8) (Page 231)
Use this feature to adjust the slope declination, and use it in conjunction with TVT ms
(2.11.3.8.) (Page 231) [when a Long Flat TVT Type (2.11.3.6.) (Page 230) is selected] to
ensure the TVT Curve remains above the false echoes in the middle of the Echo Profile.
Alternatively, if TVT Type (2.11.3.6.) (Page 230) = Slopes, preset is 2000.
8.6.11.4 TVT Shaper (2.11.4.)
Allows the manual adjustment of the TVT curve. Use this parameter in conjunction with
SIMATIC PDM.
Index Single-point model Dual-point model
Global Transducer
Values Range: -50 ... 50
Preset: 0
Related
• Shaper mode (2.11.3.5.) (Page 229)
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.