Kessel Aqualift Comfort 400V Mono Installation And Operating Instructions Manual page 60

Level sensor Mono/Duo ATEX
Connect the cable ends of the level sensor to the terminals
(see "Fig. 8: Pegelsonde ATEX"). The connection of level
sensors is identical for both Mono and Duo systems.
WARNING
Only connect level sensors to the Zener barrier,
which fulfil the ATEX requirement.
Wire colour Designation
Red (plus) 3
Black (minus) 4
Yellow-green PE
(equipotential
bonding)
Use KESSEL junction box (art. no. 28799) to lengthen the
connection cable of the level sensor.
4.6 Further connection possibilities
TeleControl GSM modem
Mount the TeleControl modem (art. no. 28792) as described
in the corresponding installation instructions 434-033.
Diverse accessories - control units
60 / 124
Conversion float
switch to level
sensor
7
8
PE
External audible alarm art. no. 20162
Warning beacon art. no. 97715
Potential free contact art. no. 80072 (plug-on printed
board)
Installation and operating instructions
Fig. 8: Pegelsonde ATEX
010-532_02_SON