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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de
Level Monitors Type NS
Insulated screw-in electrodes for mounting in walls of
tanks. The electrodes are made of stainless steel (V2A),
the material of the insulation is Teon.
The electrode NE2 with its ½"
thread can directly be screwed
into the wall of a tank. The two
electrodes (stainless steel V4A)
are ush cast in a plastic housing
(Polypropylen, PP) with cast re-
sin. The electrode can be used in
a temperature-range -5…105 °C
and is pressure-resistant up to 6
bar. The ingrained cable with 2
strands, each 0,25 mm2, is 2000
mm long, Ø 4 mm.
For one level only one NE2 is sucient. For use with
a level-monitor for more levels, normally one NE2 per
level is required.
Schraube
M4x20 V2A
2 Scheiben
2 Muttern
Behälterwandung
1/2"
14
SW 27
2000
±10
rt / RD
rt / RD
Ø 4
10
43
20
Maße in mm
General
Function
Niveauelectrodes
Electrode NE1
The NS level monitor is an elec-
tronical device for monitoring
liquid levels. They can be used as
limit monitor or minimal-maximal
control.
The monitoring of liquid levels is
eected via electrodes.
Application:
The NS units protect aggregates and plants against dry
running, overow, leakage damages and unnecessary
lost of liquids. Characteristical applications are swim-
ming pools, groundwater endangered buildings, oillled
under-water-pumps as well as whereever a certain level
should be maintained resp. dosed.
The level monitor operates as conductivity measuring
device and guarantees a perfect level capture at a
resistance of up to 250 kΩ, measured between the
electrodes. ZIEHL level monitors are also available with
adjustable time delay in order to avoid a too high relay
switching frequency in case of a moving water surface.
As electrodes any conductors, that jut into the tank down
to the required level, can be used. At metal tanks the
wall of the tank can be used as basic electrode.
The level capture is eected
through resistance measurement
via an AC voltage measuring
path, operating completely DC
voltage-free. Hereby, the resis-
tance between two (resp. three)
electrodes is measured.
When the level increases, the
electrodes are bridged and an
integrated relay switches.
2014-04-30
Electrode NE2
Part number: V223430
Part number: V223429
Filling level probe
