Endress+Hauser Liquicap M FTI51, Руководство по эксплуатации

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Commissioning Liquicap M FTI51, FTI52
58 Hauser
6.2.3 Carrying out empty calibration
!
Note!
• The empty calibration stores the capacitance value of the probe when the tank is empty. If the
measured capacitance value is, for example, 50 pF (empty calibration), a switching threshold of
2 pF is added to this value. The capacitance value of the switch point would, in this case, be 52 pF.
• The switching threshold depends on the value set for the switch point adjustment (for more
information, see Page 62).
To carry out an empty calibration, proceed as follows:
1. Check to make sure that the probe is not covered with product.
2. Turn the function switch to position 2.
3. Press the "–" key for at least two seconds.
4. Release the "–" key when the green LED 1 starts to flash.
The process of saving the empty calibration is finished when the green LED 1 lights up continuously.
You can turn the function switch back to position 1 to return to operation.
Function switch
position Function – key + key Light emitting diodes (LED signals)
A B C 1 (green) 2 (green) 3 (red) 4 (green) 5 (green) 6 (yellow)
2
Empty calibration Press On
(present)
**
** Switch status signaling (on/off/flashing) depends on the mounting location selected and the failsafe mode (MIN/MAX) set.
The LED flashes if a calibration has not yet been carried out.
1
7
3
5
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