Siemens SITRANS LR200 Instruction Manual page 104

2.6.4. Echo Sampling
2.6.4.1. Sampling up
Once echo is outside the window, a specified number of consecutive
echoes must appear above the echo locked onto, before measurement is
accepted as valid.
2.6.4.2. Sampling down
Once echo is outside the window, a specified number of consecutive
echoes must appear below the echo locked onto, before measurement is
accepted as valid.
2.6.4.3. Window
A "distance window" centered on the echo, used to derive the reading.
When a new measurement is in the window, the window is re-centered
and the reading is calculated (see Display before Auto False Echo
Suppression, page 101 for an illustration).
When the value is 0, the window is automatically calculated after each
measurement.
• For slower Measurement Response values, the window is narrow.
• For faster Measurement Response values, the window becomes
2.6.4.4. Window Used
2.6.5. Range
2.6.5.1. Near Range (LOW RANGE)
The range in front of the device (measured from the reference point
within which any echoes will be ignored. (This is sometimes referred to as
"Blanking" or "Dead Zone".)
1.
This parameter is for use only by Siemens Milltronics service technicians.
2.
For the standard configuration reference point, see
page 13. For other configurations, see
onwards.
Page 98 SITRANS LR 200 (PROFIBUS PA) – INSTRUCTION MANUAL
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progressively wider.
Note:
The echo lock window is stored as standard sample, but
displayed in the engineering units selected to display level. Any value
entered for the echo lock window will be rounded to the nearest
sample.
1
Range: 0 to 20 m
Values
Default: 0.4 m
SITRANS LR 200 Dimensions
Appendix D: Flange Adapter Versions
2
)
on
, page 44
7ML19985HP01