Conductive Sensors
Level Probes
Types CLH
•
•
•
•
•
Flexible conductive level probe
1 to 5 electrodes
User defined electrode length
Isolated or unisolated electrodes
1 1/2” pipe thread according to ISO 228/1-G11/2A
Product Description
Ordering Key
A compact and flexible level
probe for measuring the level
of conductive liquids, i.e
overfill, dry run protection or
pump control.
A total measurements system
consist of a multiple probe-
Type
Head mounting
Number of electrodes
head, 1-5 electrodes and a
control unit.
The electrode length can be
freely defined be means of
electrode extention units with or without isolation.
CLH 5
Type Selection - Probe
Pipe thread
Housing
Material
Ordering no.
for 3 electrodes
Ordering no.
for 5 electrodes
1 1/2”
PP
CLH3
CLH5
Type Selection - Electrode
Type
Ordering no.
1000 mm Basic
Thread in one end
Ordering no.
2000 mm Extended
Ordering no.
Extension 1000 mm
Thread in both ends
Electrode without isolation
Electrode with isolation, Kynar (PVDF)
Electrode with isolation, Polyolefine (FR)
CLE1
CLE1K
CLE1P
CLE2
CLE2K
CLE2P
CLE1X
CLE1KX
CLE1PX
Description
1000 mm Basic
electrode for no
further extension
1000 mm Basic
electrode for extension
1000 mm extension
electrode
1 extension joint
1 isolation tube (not
CLE2)
1000 mm extension
electrode
1 extension joint
1 isolation tube (not
CLE1X)
Specifications
Probe Head
Material
No of electrodes
CLH3
CLH5
Electrode connection
Tightening torque
Cable connection
Electrodes
Material
Length
CLE1
CLE2
PP (Polypropylen)
3
5
M4
2.7 Nm by hand -K & -P
Screw terminals
Stainless steel
AISI316/DIN1.4401
1000 mm
2000 mm
Specifications are subject to change without notice (08.04.2011)
Diameter
Isolation
CLE.K.
CLE.P.
Environment
Overvoltage category
Degree of protection
Housing
Electrode connections
Pollution degree
Operating temperature
Storage temperature
Pressure
Ø 4 mm
Kynar (PVDF)
Polyolefine (FR)
III (IEC 60664)
IP 65
IP 68
2(IEC 60664/60664A, 60947-1)
-20° to +90ºC (-4º to +194ºF)
-40º to +100ºC (-40º to +212ºF)
5 bar at 60°C
1
Specifications (cont.)
Weight
Probe Head
Electrodes
CE marking
260 g
107 g
IEC 529
Mode of Operation
Electrodes
Cut or extend the electrodes
not to damage the isolation
material of the isolated electrodes.
Example
Probe
HiHi
Y1
Hi
Y3
Lo
12
Y5
Y2
Y4
REF
Control
Unit
LoLo
Functionality - example
The diagram shows the level
control system connected as
max. and min control, i.e. registration of 2 levels + 2 alarm
levels. The relays react to the
low alternating current created when the electrodes is in
contact with the liquid.
The reference (Ref) must be
connected to the container or
if the container are made of a
nonconductive material, to an
additional electrode. In the
diagram this electrode is
shown by the dotted line.
24
14
Pump on/off A1
Alarm on/off
A2
11 21
Power Supply
to the desirable length. If
using extended electrodes,
place the enclosed isolation
tube over the extension joint,
Dimensions
and heat it with a heat gun.
Mount the electrodes in the
probehead by means of the
M4 screw inserts. Take care
Connection cable
2, 3, 4 or 5 conductor PVC
cable, normally screened.
Cable length: max. 100 m.
The resistance between the
cores and the ground must
be at last 200k. In normal
cases it is recommended to
use screened cable between
probe and controller, e.g.
where the cable is placed in
parallel to the load cables
(mains). The screen has to be
connected to Y5 (reference).
Accessories
Extension joint Ø4
60 mm Kynar for isolation
60 mm Polyolefine for isolation
M12 Cable Gland
M20 Cable Gland
M12 x 1.5
VD
VDK
VDP
M12 Cable Gland
M20 Cable Gland
Delivery Contents
Probe Head
M20 Cable Gland
M12 Blind flange
Installation Instruction
M20 x 1.5
2
Specifications are subject to change without notice (08.04.2011)
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