Commissioning; Installation And Function Check; Commissioning The Electronic Inserts Fei51, Fei52, Fei54 And Fei55; Setting The Measuring Range - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Commissioning

40
7 Commissioning
7.1

Installation and function check

Make sure that the post-installation check and final check have been completed before you
start your measuring point:
• see the chapter "Post-installation check" →  23
• see the chapter "Post-connection check" →  35
7.2 Commissioning the electronic inserts FEI51, FEI52,
FEI54 and FEI55
Due to the first start-up of the device the output is in a safe status. This is signaled by
the flashing yellow LED.
The device is not operational until you have carried out a calibration. To attain
maximum operational safety, carry out an empty and full calibration. This is strongly
recommended for critical applications.
Refer to the following subchapters for information on how to carry out the calibration.
Setting the measuring range →  40.
Carrying out empty calibration →  41.
Carrying out full calibration →  42.
Carrying out empty and full calibration →  43.
Operation options →  36.
The yellow LED 7:
• flashes fast if a calibration or switching point are not set
• shows the switching status according to the selected application and the fail-safe
mode
7.2.1

Setting the measuring range

The choice of measuring range (0 to 500 pF and 0 to 1 600 pF) depends on the
function of the probe.
• If the probe is used as a point level switch, it is possible to retain the factory setting
of 0 to 500 pF
• If the probe is used for two-point control, the following settings are recommended
for vertical installation:
• measuring range from 0 to 500 pF for probe lengths up to 1 m (3.3 ft)
• measuring range from 0 to 1 600 pF for probe lengths up to 10 m (33 ft)
Partially insulated probes are only suitable for nonconductive bulk solids.
Liquicap M FTI51
Endress+Hauser