SICK LFP Inox, Operating Instructions Manual

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O P E R AT I N G I N S T R U C T I O N S | L F P I N OX 8019921/15H0 / 2019-09-30| S I C K A G
Irrtümer und Änderungen vorbehalten
3 7
8 OPERATION
8.4.8 Teaching in static interference signals
Static interference signals in the tank generated by pipes, struts, couplings, or cleaning
balls can be taught in. The probe length provides the value for the teach-in depth.
1. Log in to expert mode, see
“8.4.1 Expert mode” .
2. Access the EXPRT-Pulse-CalRng menu using the arrow and Set pushbuttons.
3. Set the value range: 95 mm … 6,005 mm.
Note:
• The value starts from the LFP process connection.
• The value should cover all interference signals
• Maximum value = probe length – 100 mm
• The AutCal function should then run, see “7 Commissioning” .
• The CalRng parameter should always match the probe length for LFPs with remote
amplifier.
8.4.9 Evaluating signal quality
Parameters describe the quality of the measuring signal.
b
Log in to expert mode, see “8.4.1 Expert mode” .
SigQa1
Characteristic for the robustness of the EXPRT-Pulse-TrsHld setting
Not active in foam mode. The displayed value is only valid if the sensor displays the
correct level value.
• Value range: 0 to 100%
• Good signal: > 40% (a high pulse reserve is provided with the current TrsHld
setting.)
b
Measures: Reduce EXPRT-Pulse-TrsHld to increase SigQa1.
Note:
• Changing TrsHld will have an impact on SigQa2 and SigQa3.
• If a satisfactory SigQa1 value cannot be achieved by adjusting TrsHld in conjunction
with the SigQa values, the installation condition must be checked. Using a coaxial
tube improves signal detection, particularly in media with low DK values (e.g., oil).