Siemens LU01 Advanced TVT Adjustment P830 to P835, P825 Echo Marker Trigger, P830 TVT Type

Use this feature, when monitoring solids (P002 = 2), if the reported level fluctuates slightly, though the monitored surface is still. Enter the amount (in ms) of long shot Echo Profile smoothing required. When a value is keyed in, the nearest acceptable value is entered.

P825 Echo Marker Trigger

The point on the primary echo on which the measured value is based.

Values	Range: 5 to 95%
	Preset: 90% when P002=1 (Liquid) or 50% when P002=2 (Solid)
	•	P817 Profile Pointer Time
	•	P818	Profile Pointer Distance
	•	P819	Profile Pointer Amplitude
Related	•	P820	Algorithm
	•	P821	Spike Filter
	•	P822	Narrow Echo Filter
	•	P823 Reform Echo

Use this feature if the reported material level fluctuates slightly, due to a variable rise in the leading edge of the true echo on the Echo Profile.

Enter the value (in percent of echo height) to ensure the Echo Lock Window intersects the Echo Profile at the sharpest rising portion of the Echo Profile representing the true echo. This value is preset to 90% when P002=1 (Liquid) or 50% when P002=2 (Solid).

Advanced TVT Adjustment (P830 to P835)

Note: The following parameters are for authorized Siemens Milltronics Service personnel or technicians familiar with Siemens Milltronics echo processing techniques.

Advanced TVT control applies to long shots only.

P830 TVT Type

Selects the TVT Curve used.

	1		TVT Short Curved
	2		TVT Short Flat
Values	3		TVT Long Flat
	4		TVT Long Smooth Front
	5		TVT Long Smooth
	6		TVT Slopes
Altered By	•	P002 Material
Related	•	P805 Echo Confidence
	•	P835 TVT Slope Min

Parameters

7ML19985BE02 SITRANS LU01 – INSTRUCTION MANUAL Page 75