7ML19985AN02 SITRANS LU10 – INSTRUCTION MANUAL Page 101
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Troubleshooting Guide
If the "Area" algorithm is used and narrow noise spikes are evident on the (long shot)
Echo Profile, turn the Spike Filter (P821) on and / or widen the Narrow Echo Filter (P822).
Also, if the true echo has jagged peaks, use Reform Echo (P823).
If multiple echoes appear on the Echo Profile, typical of a flat material profile (especially if
the vessel top is domed), use the "first" Algorithm.
If the Echo Profile repeatedly switches from short to long, adjust the Short Shot Range
(P852) to stabilize the "shot" mode used for the echo evaluation. Also, adjust the Short
Shot Bias to increase (or decrease) the amount of preference given to short shot echoes
over long shot echoes.
Should a stable measurement still not be attainable, contact Siemens Milltronics or your
local distributor.
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