Siemens LR 460 사용자 설명서

7ML19985JM01

SITRANS LR 460 – INSTRUCTION MANUAL

Page 55

3.5.2.4. Narrow Echo Filter (default 0)

Filters out echoes of a specific width. 

To remove a false echo from the Echo Profile, take its width in mm and 
multiply it by 0.014. Enter the result.
For example, to filter out a spike with 500 mm width enter 7 (the sum of 500 
x 0.014).
When a value is keyed in, the nearest acceptable value is entered.

3.5.2.5. Reform Echo (default 0)

Smooths jagged peaks in the echo profile. Reforms fragmented echoes 

into one echo.

Use this feature when monitoring solids, if the reported level fluctuates 

slightly even though the monitored surface is still. 
Enter the amount of smoothing required. When a value is keyed in, the 

nearest acceptable value is entered.

3.5.2.6. Echo detection position 

The point on the selected echo from which the measured value is taken. 

3.5.3. Echo Sampling

3.5.3.1. 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 . 

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 

progressively wider.

0 = OFF 
greater = wider

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0 = OFF 
Greater = Wider
Recommended range 10 to 20: higher is not recommended.

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