Commissioning The Lfp - Sick Lfp Inox Betriebsanleitung

LFP Inox
The liquid to be measured has a DK value of < 5 (see chapter 14 "Medium list")
■
There are tank components which can interfere with the measurement signal
■
There is extensive rippling on the surface of the liquid
■
There are variations in the installation conditions (see chapter 1.4 "Installation conditions")
■
Commissioning
1. Mount the sensor according to the installation conditions (see chapter 1.4 "Installation conditions"
and 1.7 "Mounting the coaxial tube")
2. Log in to expert mode (Please see „5.1 Expert Mode" auf Seite 75)
3. Select the measuring mode
Access the EXPRT-CONFIG-MeasMd menu using the arrow and Set pushbuttons
○
HiSpd: max. Length = 2,005 mm, response time < 400 ms
○
HiAcc: max. Length = 6,005 mm, response time < 2,800 ms, more stable measured values,
○
recommended for liquids with low DKs and where TrsHld is < 70
4. Static sources of interference in the tank
Static sources of interference in the tank generated by tubes, beams, couplings or a cleaning
○
ball can be normally filtered.
Access the EXPRT-CONFIG-CalRng menu using the arrow and Set pushbuttons.
○
The following information applies:
○
The teach-in depth starts from the LFP process connection.
▫
The teach-in depth should cover all interference signals.
▫
Max. teach-in depth (recommended) = probe length
▫
AutCal function must be launched afterwards (see chapter 2.1 "Quick commissioning")
▫
Set the value range between 95 and 6,005 mm
○
If the tank cannot be emptied, the CalRng must be changed accordingly. (please see step 5)
○
The liquid level must be located at least 200mm below the CalLen or probe end.
○
5. Launch the AutCal menu
Access AutCal with arrow and Set pushbutton.
○
Use the Set pushbutton to confirm the AutCal menu item and then use it again to confirm the
○
security question Ok?.
The AutCal function is confirmed with !CalOK.
○
The following information applies: It isn´t allowed that the probe is covered with medium in the
○
calibration range. The minimum value is set at calibration range (CalRng see step 4) plus
200 mm.
6. Analyze signal quality
See chapter „5.6 Evaluating the signal quality"
○
In the event of problems:
○
Reduce value in the EXPRT-CONFIG-TrsHld menu
▫
Set parameter to HiAcc in the EXPRT-CONFIG-MeasMd menu
▫
Switch on filters in the Set filters menu
▫
Reduce parameters in the EXPRT-CONFIG-MaxCol menu
▫
7. Configure filters (see chapter 5.1 "Filtering the measured values")
8014485/YE12/2014-08-20 © SICK AG • Level sensors • Germany • Subject to change without notice

2 Commissioning the LFP

EN
Operating instructions
65