7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL Page 63
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Parameters
If a stillpipe is being used, the setting for CLEF Range will be
determined by the horn size. See Propagation Factor (2.2.1.1.) for a
table of values.
2.2.3.5. Range
2.2.3.5.1. Near Range
The range in front of the device (measured from the sensor reference
point
1)
) within which any echoes will be ignored. (This is sometimes
referred to as "Blanking" or "Dead Zone".)
2.2.3.5.2. Far Range
Maximum distance from the reference point
1)
, within which an echo
should be considered valid.
2.2.3.5.3. Min. Sensor Value
The minimum recorded Sensor value in Sensor units.
Open the menu View – Peak Values and click on the Sensor tab.
2.2.3.5.4. Max. Sensor Value
The maximum recorded Sensor value in Sensor units.
Open the menu View – Peak Values and click on the Sensor tab.
Values
Range: 0 to 20 m (0 to 65.6 ft)
Default: 0.0 m
Related
parameters
Position (2.2.3.1.3.)
1)
See
Flat Face Flange
on page 10 and
Flanged Horn
on page 9,
Values
Range: 0 to 20 m
Nominal Horn size Horn length Defaults
1.5" (threaded) 100 mm 185 mm
2.0" (threaded) 131.5 mm 217 mm
2.0" (flanged SS) 131.5 mm 185 mm
3.0" (flanged SS) 164.5 mm 219 mm
4.0" (flanged SS) 219.5 mm 274 mm
Note: Far Range can extend beyond the bottom of the vessel.
Values
Range: min. = Low Calibration Point
max. = 23 m
Default: Low Calibration Point + 1 m
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