Dinel CLS-23 User manual

Read carefully the instructions published in this manual before the rst use of the level meter. Keep the manual
at a safe place. The manufacturer reserves the right to implement changes without prior notice.
průmyslová elektronika



1 . Basic description .......................................................................................................................4
2 . Variants of sensors ....................................................................................................................5
3 . Dimensional drawing ..................................................................................................................5
4 . Installation and putting into operation ........................................................................................6
5 . Mechanical mounting .................................................................................................................6
6 . Electrical connection ..................................................................................................................9
7 . Settings ......................................................................................................................................11
8 . Function and status indication (only with LED state indicator variant) .......................................12
9 . Order code .................................................................................................................................13
10 . Correct specication examples ................................................................................................13
11 . Accessories ..............................................................................................................................14
12 . Safety, protection, compatibility and explosion proof ...............................................................14
13 . Functional safety ......................................................................................................................15
14 . Use, manipulation and maintenance ........................................................................................15
15. Putting out of operation or disposal ..........................................................................................16
16 . General conditions and warranty .............................................................................................16
17 . Marking of labels ......................................................................................................................17
18. Technical specications............................................................................................................18
19 . Packing, shipping and storage .................................................................................................21


4
© Dinel, s.r.o. CLS–23
Capacitive level sensors (switches) CLS–23 are designed for limit level detection of electrically
conductive and non-conductive uids in vessels, reservoirs, sumps, pipes, tanks, etc. The
sensitivity of the sensor can be easily set by placing magnetic pen on sensitive spot.
The process coupling at the housing can be with metric thread (M18x1.5 ; M20x1.5), pipe thread
(G3/8” ; G1/2”) or sealing thread (NPT 1/2–14). Output performances – transistor output with
open collector (PNP), two wire electronic switch (S) and NAMUR output for intrinsically safe
connection.
There are next performances available: N – Normal for non-explosive areas, E – Extended
temperature range for non-explosives areas, Xi – Explosion proof (intrinsically safe for explosive
areas), NT – High temperature variant for non-explosives areas and XiT – High temperature
variant for explosive areas.
CLS-23 capacitive level sensors meet the safety integrity level requirements according to
standard EN 61508 at level SIL 1.
 
* Variant „E“ without LED state indicator
To ensure maximum safety of control processes, we have dened the following safety instructions
and information. Each instruction is labelled with the appropriate pictogram.

This symbol informs you about particularly important instructions for installation and operation of
equipment or dangerous situations that may occur during the installation and operation. Not observing
these instructions may cause disturbance, damage or destruction of equipment or may cause injury.

This symbol indicates particularly important characteristics of the device.

This symbol indicates helpful additional information.


All operations described in this instruction manual have to be carried out by trained personnel
or by an accredited person only. Warranty and post warranty service must be exclusively
carried out by the manufacturer.
Improper use, installation or set-up of the sensor can lead to crashes in the application.
The manufacturer is not responsible for improper use, loss of work caused by either direct
or indirect damage, and for expenses incurred at the time of installation or during the period
of use of the level sensors.

CLS–23 © Dinel, s.r.o.
5
 
• CLS–23_–10 Uncoated short bar electrode, for sensing the level of electrically non-con-
ductive liquids (oil, crude oil products). Assembly into a side wall of vessel or
into a pipe. Electrode length 30 mm.
• CLS–23_–11 Fully coated short bar electrode, for sensing the level of non-aggressive
electrically conductive liquids (water, water solutions). Electrode insulation
from PP material, assembly into a side wall of vessel or into a pipe. Electrode
length 30 mm.
• CLS–23_–12 Fully coated short bar electrode, for sensing the level of electrically conductive
liquids (various chemicals, moderately aggressive water solutions). Higher
temperature resistance compared to variant "11". Electrode insulation from FEP
material. Assembly into a side wall of vessel or into a pipe. Electrode length
30 mm.
• CLS–23_–20 Partially coated rod electrode, for sensing the level of electrically conductive
and non-conductive liquids, partially resistant against fume condensation in
the sensed area. Electrode insulation from FEP material. Installation from
above, on shorter electrodes (max. 200 mm) also from the side. Electrode
length from 50 mm to 1 m.
• CLS–23_–21 Fully coated rod electrode, universal use, for sensing the level of electrically
conductive liquids. Resistant against fume condensation and partially resistant
against spraying media. Electrode insulation from FEP material. Installation
from above, on shorter electrodes (max. 200 mm) also from the side. Electrode
length from 50 mm to 1 m.
• CLS–23_–30 Dismountable uncoated rod electrode for sensing the level of conductive
or non-conductive liquids. Installation from above, on shorter electrodes (max.
200 mm) also from the side. Electrode length from 50 mm to 1 m.
 
CLS – 23_ – 10
Thread
Types of threads:
G 3/8''
M18x1,5
M20x1,5
1/2–14 NPT
LED *
CLS – 23_– 11(12) CLS – 23_ –21CLS – 23_ –20
PP (var.:11)
FEP (var.:12)

6
© Dinel, s.r.o. CLS–23
CLS – 23_ – 30
Variant „A“
with cable outlet
Variant „C“ with connector
(outside CLS–23E*)
Magnetic pen MP–8
Electrode type
according to
specic variants
High temperature variants
(CLS–23_T–10; 12; 20; 21; 30)
 
 
* Variant „E“ without LED state indicator
• DLS® level sensors can be xed in a vertical, horizontal or slanted position into the wall of
a vessel, storage tank or on a xation console in a sump by screwing into the welding ange,
using a xing nut.
• Basic application recommendations are mentioned below.
During assembly into the metal tank or the storage tank, it is not necessary to separately ground
the base of the level sensor. In case of installation in concrete sumps or silos, it is appropriate to
install the level sensor onto a metallic auxiliary construction (console, lid, etc.), and then connect to
ametallic,constantlysubmerged object, orwithsteelwith steel reinforcementsinconcrete(armouring).
In the case of the reading of an aggressive medium, we recommend that the producer be consulted
If the sensors are tted with protective caps at the ends of the electrodes, remove the caps
before commissioning.
Please follow next 3 steps:
 
 
 

CLS–23 © Dinel, s.r.o.
7
In case of vertical mounting, sensors
can be mounted into open, closed and
pressurized tanks. The stated distanc-
es relate to the electrode length (longer
electrode).
E – Electrode length in mm
Fig. 1: Vertical mounting
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
30
E
30a
EEp
20
E
40b
50
E
10c
40
E
40d
20
E
20k
+≈
>
+≥=
+≥=
+≥=
+≥=

30
E
30a
EEp
20
E
40b
50
E
10c
40
E
40d
20
E
20k
+≈
>
+≥=
+≥=
+≥=
+≥=

30
E
30a
EEp
20
E
40b
50
E
10
c
40
E
40d
20
E
20k
+≈
>
+≥=
+≥=
+≥=
+≥=

30
E
30a
EEp
20
E
40b
50
E
10c
40
E
40d
20
E
20k
+≈
>
+≥=
+≥=
+≥=
+≥=

Mounting in a bypass measuring tube.
We recommend upholding the tube di-
ameter.
E – Electrode length in mm
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
Fig. 2: Bypass measuring tube
Fig. 3: Mounting in the pipe
In the case of mounting in the pipe it
is necessary to provide the minimum
distance of the inner walls from the
electrode at 5 mm. In some cases
(sticky liquids, low permittivity liquids) it
is better to mount the sensor into a pipe
bend. Be careful of possible formation
of air pockets.
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
VERTICAL MOUNTING FOR TYPE: All vertically mounted sensors
MOUNTING IN THE PIPE FOR TYPE: CLS–23_–10, 11, 12, 20, 21
BYPASS MEASURING TUBE FOR TYPE: CLS–23_–20, 21, 30

8
© Dinel, s.r.o. CLS–23
In case of vertical mounting, it is
possible to use the sensor for simple
two-state regulation of the level height
between a min. and max. value. The
position of the minimum and maximum
level can be changed by setting the
sensor. Upon a change in the measured
medium, it is necessary to perform new
limit settings.
E – Electrode length in mm
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
Fig. 4: Two state regulation by hysteresis setting
Fig. 5: Long tting tubes in side wall mounting
The installation of the sensor near the inlet, in the narrow neck or using an unsuitable welding
ange may cause the incorrect sensor function.
Suitable welding anges can be found in the Dinel assortment, types ON, NN – see Accessories.
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
WRONG CORRECT
WRONG
CORRECT
WRONG CORRECT
TWO STATE REGULATION BY
HYSTERESIS SETTING
FOR TYPE: CLS–23_–20, 30 (only for electrically
non-conductive liquids)
CLS–23_–21 (for electrically conductive liquids)
LONG FITTING TUBES IN SIDE
WALL MOUNTING FOR TYPE: All variants

CLS–23 © Dinel, s.r.o.
9
Fig. 6: Auxiliary electrode in non-conductive tanks
At sensors with the length of electrodes greater than 300 mm it is necessary to use an auxiliary
probe (e.g. conductive probe) when installing from above on non-conductive containers for the
maximum detection reliability. The auxiliary electrode is connected electrically with the housing of
the sensor. The recommended length of the auxiliary electrode and the distance from the sensors
are shown in the picture.
Suitable types of auxiliary electrodes are for example: Dinel CNP–18F–30 probes with an M18
thread or a PDE–18 plate electrode (see Accessories).
max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
Electrical connection to the
sensor housing
Conductive probe
CNP–18F–30
Non-conductive tank
30
E
30a
EEp
20
E
40b
50
E
10c
40
E
40d
20
E
20k
+≈
>
+≥=
+≥=
+≥=
+≥=

E – Electrode length in mm
30
E
30a
EEp
20
E
40b
50
E
10c
40
E
40d
20
E
20k
+≈
>
+≥=
+≥=
+≥=
+≥=

max.
min.
E
b
E
E
k
c
d
>5
E
a
Ep
>5
>5
Auxiliary electrode PDE–18
AUXILIARY ELECTRODE IN NON-
-CONDUCTIVE TANKS
FOR TYPE: CLS–23_–20, 21, 30 (for electrode
length up to 300 mm)
 
For “A” variant with the xed cable, the individual color cores of the connecting cable are connected
to the respective terminals of the related equipment (supply unit).
For “C” variant with the connector, the cable can be supplied with the sensor (length 2 or 5 m),
tted with the pressed connector socket or dismountable connector socket without the cable (see
accessories), the connector is not part of the sensor. In this case the cable is connected to the
inside pins of the socket according to Fig. 10.
The sensor with related equipment is interconnected by a suitable three-core (P variation) or two-
core (S and R variations) cable. The length of the cable for the Xi and XiT variations must be
selected with respect to the maximum permitted parameters (usually inductance and capacity) of
the outside intrinsically safe circuit of supply units (NSSU, NDSU, NLCU). If using a dismountable
connector socket, the outside diameter of the cable is a maximum of 6 mm
Type CLS–23_–_–_–S–_
The positive power terminal +U is con-
nected via a load (e.g. a relay) to the
brown wire, or connector pin no.1, the
negative terminal to the white wire (con-
guration "N" and "NT") or to the blue
wire (conguration "E") or to connector
pin No.3.
+U
0V
BN (1)
WH, BU (3)
+U
0V
BN (1)
BU (3)
BK (4)
Fig. 7: “S“ type sensors connection
(2 - wire electronic switch)

10
© Dinel, s.r.o. CLS–23
Type CLS–23_–_–_–P–_
Positive pole (+ U) of power supply is
connected to brown wire or pin connec-
tor No. 1, negative pole is connected to
blue wire or pin connector No. 3. Load
(relay) is connected to black wire or pin
connector No. 4.
+U
0V
BN (1)
WH, BU (3)
+U
0V
BN (1)
BU (3)
BK (4)
Type CLS–23_–_–_–R–_
Brown wire or pin connector No. 1 is
connected to positive pole (+U) of Intrin-
sically safe supply unit. Blue wire or pin.
connector No. 3 is connected to nega-
tive pole of Intrinsically safe supply unit.
Fig. 8: “P“ (PNP) type sensors connection
Fig. 9: “R“ (NAMUR) type sensors connection
Legend:
(1...4) – terminals number for
variants with connector
BN – brown
WH – white
BK – black
BU – blue
output (BK)
0V (BU)
+U (BN)
Fig. 10: Inside of the connector socket
Electrical connection can only be made when de-energized!
The source of the power voltage must comprise of a stabilised safe low power source with
galvanic separation. In the event that a switch-mode power supply is used, it is essential that
its construction effectively suppresses common mode interference on the secondary side. In
the event that the switch-mode power supply is equipped with a PE safety terminal, it must
be unconditionally grounded! Spark-safe devices type CLS–23Xi (XiT) must be powered from
a spark-safe power source meeting the above-mentioned requirements.
Due to the possible occurrence of an electrostatic charge on the non-conductive parts of
the sensor, it is necessary to ground all sensors intended for use in environments with an
explosion hazard CLS–23Xi (XiT). This can be performed by grounding el. conductive tanks
or el. conductive tank lids, and in the case of el. non-conductive tanks using and grounding
an auxiliary plate electrode PDE-27.
In the event that the level meter (sensor) is installed in an outdoor environment at a distance
greater than 20 m from the outdoor switchboard, or from an enclosed building, it is necessary
to supplement the electrical cable leading to the level meter (sensor) with suitable overvoltage
protection.
In the event of strong ambient electromagnetic interference, paralleling of conductors with
power distribution, or for distribution to distances over 30 m, we recommend using a shielded
cable and grounding the shielding on the side of the power source.

CLS–23 © Dinel, s.r.o.
11
 
On installations from above, it is necessary during detection of non-conductive liquids using sen-
sors CLS–23_–20; –30 and during detection of conductive and non-conductive liquids using
sensor CLS–23_–21 to set the limits for closing and opening with the electrode submerged in the
medium.
The closing and opening limits are shifted closer to the state with a submerged electrode.
The CLS–23E range of sensors is made without a signal LED indicator. To check the correctness of
settings, it is necessary to connect a connected device or a load and to use it to receive information
about the opened / closed status of the sensor.
The settings are done by touching a magnetic pen MP – 8 on
the sensitive spot M located on the front-side of the sensor. By
touching with the magnetic pen for a short time (max. 2 sec) on
the sensitive spot M, the sensor will open, holding down the
magnetic pen for longer (min. 4 sec) the sensor will close. In this
way, the sensitivity to the measured medium and the switching
modes (O, C) are set.
Sensitive spot
On an empty or partially lled tank (level below the bottom edge of the sen-
sor), touch the sensitive area M for 5 sec with the magnetic pen (the sensor
will close). When the tank lls up above the top edge of the sensor, touch the
sensitive area M for 1 sec. with the magnetic pen (the sensor will open).
On an empty or partially lled tank (level below the bottom edge of the sen-
sor), touch the sensitive area M for 1 sec with the magnetic pen (the sensor
will open). When the tank lls up above the top edge of the sensor, touch the
sensitive area M for 5 sec. with the magnetic pen (the sensor will close).
mode O
(switches when
submerged)
mode C
(unswitches when
submerged)

Sensors CLS–23_–10; –20; –30 have factory default settings for detecting mineral oils,
CLS – 23_– 11; –12; –21 for detecting drinking water. Switching is set to mode "O" (the sensor will
close when submerged).

12
© Dinel, s.r.o. CLS–23
 (o n l y w i t h L E D s t a t e i n d i c at o r va r i a n t )
In the following table are the types of inputs and the respective statuses (ON/ OFF) in the case of a
maximum and minimum level sensing. The signalling of the status of the sensor is indicated by the
orange LED located on the upper area of the sensor beside the connector (cable).
* Limit setting for closing (opening) on the same level or impossibility of differentiate between closing level and open-
ing level (low permittivity of the medium).
Indicator Function
Orange
LED
Continuous light – Sensor is closed (switched ON)
Dark – Sensor is open (switched OFF)
Rapid ashing (period 0.2 s) – error setting *
Slow ashing (period 0.8 s) – short circuit at sensor output
Sensor with type output „S“ and „R“ for each ash of the LED switches its output on for approx. 3
ms. This period is sufciently short to avoid unwanted switching of relay contacts. For binary inputs,
we recommend to set the lter so as not to respond to pulses shorter than 3 ms.
Units Dinel NSSU, NDSU a NLCU with transistor switch („T“) detects and transmitts these pulses
to the output.
For security reasons, we recommend to set the mode O (normally open, sensor closes when
immersed) for minimum level detection. Any failure of the sensor or wiring is equally apparent as
the emergency level state. Analogously – for the maximum level detection is recommended to set
the mode C (normally closed, sensor opens when immersed).
Level state Mode Type of sensor Output state LED indicator *
Minimum level sensing
O
CLS–23_–_ _– _ –P–_
CLS–23_–_ _– _ –S–_ CLOSED
(Shine)
CLS–23Xi–_ _– _ –R–_
CLS–23XiT–_ _– _ –R–_
HIGHER
CURRENT
O
CLS–23_–_ _– _ –P–_
CLS–23_–_ _– _ –S–_ OPEN
(Dark)
CLS–23Xi–_ _– _ –R–_
CLS–23XiT–_ _– _ –R–_
LOWER
CURRENT
Maximum level sensing
C
CLS–23_–_ _– _ –P–_
CLS–23_–_ _– _ –S–_ CLOSED
(Shine)
CLS–23Xi–_ _– _ –R–_
CLS–23XiT–_ _– _ –R–_
HIGHER
CURRENT
C
CLS–23_–_ _– _ –P–_
CLS–23_–_ _– _ –S–_ OPEN
(Dark)
CLS–23Xi–_ _– _ –R–_
CLS–23XiT–_ _– _ –R–_
LOWER
CURRENT
* Variant „E“ without LED state indicator

CLS–23 © Dinel, s.r.o.
13
 
 
CLS–23N–10–A–S–G3/8 cable 5 m
(N) performance for non-explosive areas; (10) uncoated short bar electrode 30 mm; (A) cable outlet with 5 m xed
cable; (S) 2-wire electronic switch; (G3/8) process connection with pipe thread G3/8”.
CLS–23E–30–A–S–G1/2 E450 cable 10 m
(E) performance for extended temperature range performance for non-explosive areas; (30) uncoated removable
rod electrode; (A) cable outlet with 10 m xed cable; (S) 2-wire electronic switch; (G1/2) process connection with
pipe thread G1/2”; (E450) electrode length 450 mm.
CLS–23NT–20–C–S–M18 E320
(NT) performance for high temperature performance; (20) partly insulated rod electrode (FEP); (C) electrically con-
nection with connector; (S) 2-wire electronic switch; (M18) process connection with metric thread M18x1.5; (E320)
electrode length 320 mm.
CLS–23Xi–11–C–R–NPT
(N) performance for non-explosive areas; (11) insulated (coated) short bar (PP) electrode 30 mm; (C) electrically
connection with connector; (R) NAMUR output type; (NPT) process connection with sealing thread 1/2 – 14 NPT.
process connection:
type of output: P –PNP (Open collector)
S –2-wire electronic switch
R –NAMUR (Changing the supply current)
connection method: A – cable outlet (+ cable length)
C – connector – except variant „E“. (socket not included
with sensor, recommended type - see accessories.)
type and performance
of electrode:
mech. performance: N– non-explosive areas
E– extended temperature range (without LED)
NT – high temperature performance
Xi – for explosive environments
XiT – high-temperature conf. for explosive environments
10 – uncoated short bar, length 30 mm
11 – insulated (coated) short bar (PP), length 30 mm (only for N and Xi)
12 – insulated (coated) short bar (FEP), length 30 mm
20 – partly insulated rod (FEP), length 50 ... 1000 mm
21 – fully insulated rod (FEP), length 50 ... 1000 mm
30 – uncoated removable rod, length 50 ... 1000 mm
G3/8 – pipe thread G 3/8"
G1/2 – pipe thread G 1/2"
M18 – metric thread M 18x1,5
M20 – metric thread M 20x1,5
NPT – sealing thread NPT 1/2–14
CLS – 23 – – – – E Cable Length of cable in meters
(only variant “A“)
electrode length in mm

14
© Dinel, s.r.o. CLS–23
optional – for a surcharge
(see catalogue sheet of accessories)
• cable (over the standard length 2m)
• non-detachable connector M12 (variants
N, NT) with cable length 2 or 5 m.
• detachable connector M12 with outlet
PG7 (variants N, NT)
• normal steel (ON) or stainless steel (NN)
welding ange
• stainless steel xing nut UM–18x1,5
• various types of seals (PTFE, Al, etc.)
 
standard – included in the level sensor price
• 1 pcs. magnetic pen MP-8
• 1 pcs. seal (asbestos free) (Klingerit) *
 
The level sensor is equipped with protection against electric shock on the electrode, reverse polarity,
output current overload, short circuit and against current overload on output.
Protection against dangerous contact is provided by low safety voltage according to 33 2000-4-41.
Electromagnetic compatibility is provided by conformity with standards EN 55011 / B, EN 61326-1,
EN 61000-4-2 (8 kV), -4-3 (10 V/m), -4-4 (2 kV), -4-5 (1 kV) and -4-6 (10 V).
Explosion proof CLS–23Xi and XiT is provided by conformity with standards
EN 60079- 0:2013+A11:2014, EN 60079-0:2012.
Explosion proof CLS–23Xi and XiT is veried FTZÚ – AO 210 Ostrava – Radvanice: FTZÚ 12 ATEX
0106X.
A declaration of conformity was issued for this device in the wording of Act No. 90/2016 Coll., as
amended. Supplied electrical equipment matches the requirements of valid European directives for
safety and electromagnetic compatibility.

If the apparatus is used as device of Group II and with using of an approved power supply device,
which output parameters comply with required input parameters, it is necessary to have an galvanic
separation or in case of apparatus without galvanic separation (Zener barriers) it is necessary to
provide equipotential equalizing between sensor and barrier earthing point.
Design CLS–23Xi-11 (12, 20, 21) can be used in zone 0. Other design DLS–23Xi can be used in
zone 0 only electrode part and head with electronics can be used only in zone 1.
Ambient temperature: Tamb = - 20°C ... +75°C
Temperature of measured medium according to design variant:
Xi type 10, 12: (- 25°C to + 105°C)
Xi type 11: (- 10°C to + 105°C)
Xi type 20, 21, 30, XiT: (- 30°C to + 150°C)
Maximum temperature of electrodes is equal to temperature of measured medium.
* Pressure resistance - see the table in
the accessories datasheet in the "seals
and gaskets".

CLS–23 © Dinel, s.r.o.
15
The CLS-23 capacitive level sensors meet the safety integrity level requirements according to stan-
dard EN 61508. The sensors are intended for level height detection applications of liquids with
increased safety demands in modes:
• Overll protection
• Dry run protection
In both modes, the sensors meet the requirements for functional safety at level SIL 1.
The sensor electronics have 1oo1 architecture (single-channel without diagnostics).
It is recommended to perform a function test of the sensor's safety function 1 per year.
 
 
The level meter does not require any personnel for its operation. Maintenance of this equipment
consists in verication of integrity of the level meter and of the supply cable.
It is forbidden to make any changes or interventions to the CLS-23 sensor without the consent of the
manufacturer. Any repairs must only be carried out by the manufacturer or by a service organiza-
tions authorised by the manufacturer.
Assembly, installation, commissioning, service and maintenance of the CLS-23 level sensor must
be carried out in accordance with the manual and the provisions of valid standards for the installa-
tion of electrical equipment must be complied with.
Activity during the operation:
• If the sensor is connected to the automatic control system or to emergency signalling, it must
not be infringed in its setting during the operation.
• If a change of the sensor settings is necessary, the whole system must be temporarily switched
o󰀨 and the process held in a safe condition using other means and measures.
• Signalling of failure conditions is described in chapter 8. Status and failure signalization
Activity in case of a failure:
• In the event of detected faults or fault signals, the whole system must be shut down and the
process held in a safe condition using other means and measures.
• If the replacement of the sensor is needed due to the fault, it is necessary to notify the manu-
facturer (including a description of the fault).
Repairs of the sensors:
If you need to send the sensor for repair, proceed as follows:
• Remove and clean the sensor or perform its decontamination and wrap it well.
• Write a description of the fault as detailed as possible, attach also a detailed description of the
application and of the installation location and everything together with the sensor send please
to the address of Dinel s.r.o. company.
• Please provide maximum synergy in nding the root cause of the fault. Your satisfaction is our
top priority!

16
© Dinel, s.r.o. CLS–23
 
Dinel, s.r.o. guarantees for the period of three (3) years that the product has the characteristics as
mentioned in the technical specication.
Dinel, s.r.o. is liable for defects ascertained within the warranty period and were claimed in writing.
This guarantee does not cover the damages resulting from misuse, improper installation or incorrect
maintenance.
This guarantee ceases when the user or the other person makes any changes on the product or the
product is mechanically or chemically damaged, or the serial number is not readable.
The warranty certicate must be presented to exercise a claim.
In the case of a rightful complaint, we will replace the product or its defective part. In both cases, the
warranty period is extended by the period of repair.
Disassembly:
Before commencing disassembly, consider possible risks, such as for example pressure in the tank,
high temperatures, corrosive properties or toxicity of products, etc.
Carefully read the product manual chapter "Installation instructions" and "Electrical connection" and
perform the described steps in reverse sequence.
Disposal:
Capacitative limit sensors CLS-23 are made from materials that can be recycled by specialised
companies. Mark the device as waste and dispose of it according to the respective government
directive for handling electronic waste. Materials: see "Technical specications".
 

CLS–23 © Dinel, s.r.o.
17
Symbol of producer: logo Dinel®
Internet address: www.dinel.cz
Level sensor type and electrode length: CLS–23Xi(XiT)–_ _–_–R–_ _ Exxxx
Serial number: Ser. No.: ______ – (from the left: production year, serial production number)
Mark of non-explosive device: , Performance II 1/2G Ex ia IIC T6 Ga/Gb
Limit parameters: Ui = 12 V =, Ii = 15 mA; Pi = 45 mW; Ci = 15 nF; Li = 10 μH
Ambient temperature range: ta= -20 ... +75 °C
Number of certicate of intrinsic safety: FTZÚ 12 ATEX 0106X
Compliance mark:
Protection class: IP68; Electro-waste take-back system mark:
Size of labels 81 x 9 mm, the size shown does not correspond to reality.
Labels for device of the type CLS–23Xi(T)–10; CLS–23Xi(T)–30:
 
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
a
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1G Ex ia IIB T6 Ga
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIB T6 Ga/Gb
i
a
a
a
1026
1026
1026
1026
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
a
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1G Ex ia IIB T6 Ga
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIB T6 Ga/Gb
i
a
a
a
1026
1026
1026
1026
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
a
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1G Ex ia IIB T6 Ga
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIB T6 Ga/Gb
i
a
a
a
1026
1026
1026
1026
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
a
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-10(30)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIC T6 Ga/Gb
i
CLS-23Xi-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23Xi-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1G Ex ia IIB T6 Ga
i
CLS-23XiT-__-_-R-____ E____ No.:______
IP68
Štítek pro CLS-23XiT-11(12, 20, 21)-
FTZÚ 12 ATEX 0106X
U = 12 V I = 15 mA
P = 45 mW C = 15nF
L = 10uH t = - 20 . .. +75 °C
i
i
i
i
II 1/2G Ex ia IIB T6 Ga/Gb
i
a
a
a
1026
1026
1026
1026
Labels for device of the type CLS–23Xi(T)–11, 12, 20, 21:
Symbol of producer: logo Dinel®
Internet address: www.dinel.cz
Level sensor type and electrode length: CLS–23Xi(XiT)–_ _–_–R–_ _ Exxxx
Serial number: Ser. No.: ______ – (from the left: production year, serial production number)
Mark of non-explosive device: , Performance II 1G Ex ia IIB T6 Ga or II 1/2G Ex ia IIB T6 Ga/Gb
Limit parameters: Ui = 12 V =, Ii = 15 mA; Pi = 45 mW; Ci = 15 nF; Li = 10 μH
Ambient temperature range: ta= -20 ... +75 °C
Number of certicate of intrinsic safety: FTZÚ 12 ATEX 0106X
Compliance mark:
Protection class: IP68, Electro-waste take-back system mark:

18
© Dinel, s.r.o. CLS–23
 

Supply voltage 6 ... 30 V DC
Supply current – output type P
– output type S
max. 0,6 / 7 mA (OFF / ON state)
max. 0,6 mA (OFF state)
Switched current – output type P
– output type S
max. 100 mA
3,3 mA / 40 mA (min. / max.)
Remanent voltage - ON state – output type P
– output type S
1,8 V
6,0 V
Output time delay 0,1 s
Protection class IP68 (0,1 MPa)
Safety integrity level SIL 1
Cable
(for cable outlet performance)
CLS–23N, NT, Xi, XiT
CLS–23E
PVC 2x 0,34 mm2 (3x 0,34 mm2 – output P)
silicone 2x 0,5 mm2
Weight
(with 2 m cable and 30 mm electrode)
CLS–23N, E, Xi
CLS–23NT, XiT
cca. 45 g
cca. 190 g
– variants Xi, XiT
Supply voltage 8 ... 9 V DC
Current supply (state OFF / ON) – NAMUR ≤ 1 mA / ≥ 2,2 mA
Max. internal values Ui = 12 V DC; Ii = 15 mA; Pi = 45 mW; Ci = 15 nF;
Li = 10 µH
Coupling capacity / Electric strength 44 nF / 250 V AC
Reference value of LC parameters of used cable Typical C < 150 pF/m
Typical L < 0,8 µH /m

Type Size Marking
Metric thread M18 x 1,5 M18
Metric thread M20 x 1,5 M20
Pipe thread (BSP) G 3/8'' G3/8
Pipe thread (BSP) G 1/2'' G1/2
Sealing thread 1/2–14 NPT

Output Variants
S („S“) N, E, NT
PNP („P“) N, E, NT
NAMUR („R“) Xi, XiT

CLS–23 © Dinel, s.r.o.
19

Sensor part Variants Material
Housing All variants Plastic PP
Process coupling All variants Stainless steel W.Nr. 1.4305 (AISI 303)
Electrode All variants Stainless steel W.Nr. 1.4305 (AISI 303)
Electrode insulation CLS–23_–11 Plastic PP
Electrode insulation CLS–23_–12, 20, 21 Plastic FEP
 (EN 60079-10–1)
CLS – 23N Basic performance for non-explosive areas.
CLS – 23E Extended temperature performance for non-explosive areas.
CLS – 23NT High-temperature basic performance for non-explosive areas.
CLS – 23Xi (XiT)–10
CLS–23Xi (XiT)–30
Intrinsically safe explosion-proof (XiT - high-temperature) performance for use in
hazardous areas (explosive gas atmospheres or explosive atmospheres with dust)
II 1/2 G Ex ia IIC T6 Ga/Gb with intrinsically safe supply units, electrode part
zone 0, head zone 1.
CLS – 23Xi–11, 12,
20, 21
Intrinsically safe explosion-proof performance for use in hazardous areas
(explosive gas atmospheres or explosive atmospheres with dust) II 1 G Ex ia IIB
T6 Ga with intrinsically safe supply units, whole sensor zone 0.
CLS – 23XiT–12,
20, 21
Intrinsically safe high-temperature explosion-proof performance for use in
hazardous areas (explosive gas atmospheres or explosive atmospheres with dust)
II 1/2 G Ex ia IIB T6 Ga/Gb swith intrinsically safe supply units, electrode part
zone 0, head zone 1.
– variants Xi, XiT
Variant
(Performance) Temperature tp Temperature tm Temperature ta
Max. operating pressure for temperature tp
to 30°C to 85°C to
105°C
to
130°C
to
150°C
CLS–23Xi–10 -25°C ... +105°C -25°C ... +105°C -20°C ... +75°C 8 MPa 6 MPa 5 MPa – –
CLS–23XiT–10 -30°C ... +150°C -30°C ... +150°C -20°C ... +75°C 8 MPa 6 MPa 5 MPa 4 MPa 3 MPa
CLS–23Xi–11 -10°C ... +105°C -10°C ... +105°C -10°C ... +75°C 7 MPa 5 MPa 4 MPa – –
CLS–23Xi–12 -25°C ... +105°C -25°C ... +105°C -20°C ... +75°C 8 MPa 6 MPa 5 MPa – –
CLS–23XiT–12 -30°C ... +150°C -30°C ... +150°C -20°C ... +75°C 8 MPa 6 MPa 5 MPa 4 MPa 3 MPa
CLS–23Xi–20 -25°C ... +105°C -30°C ... +150°C* -20°C ... +75°C 3 MPa 2,5 MPa 2 MPa – –
CLS–23XiT–20 -30°C ... +150°C -30°C ... +150°C -20°C ... +75°C 3 MPa 2,5 MPa 2 MPa 1,5 MPa 1 MPa
CLS–23Xi–21 -25°C ... +105°C -30°C ... +150°C* -20°C ... +75°C 3 MPa 2,5 MPa 2 MPa – –
CLS–23XiT–21 -30°C ... +150°C -30°C ... +150°C -20°C ... +75°C 3 MPa 2,5 MPa 2 MPa 1,5 MPa 1 MPa
CLS–23Xi–30 -25°C ... +105°C -30°C ... +150°C* -20°C ... +75°C 8 MPa 6 MPa 5 MPa – –
CLS–23XiT–30 -30°C ... +150°C -30°C ... +150°C -20°C ... +75°C 8 MPa 6 MPa 5 MPa 4 MPa 3 MPa
* Valid for top mounting (in vertical position)

20
© Dinel, s.r.o. CLS–23
 – variants N, E, NT
Variant
(Performance) Temperature tp Temperature tm Temperature ta
Max. operating pressure for temperature tp
to
30°C to 85°C to 105°C
to
130°C
to
150°C
CLS–23N–10 -25°C ... +105°C -25°C ... +105°C -20°C ... +80°C 8 MPa 6 MPa 5 MPa – –
CLS–23E–10 -25°C ... +120°C -25°C ... +120°C -25°C ... +105°C 8 MPa 6 MPa 5 MPa – –
CLS–23NT–10 -30°C ... +150°C -30°C ... +150°C -20°C ... +80°C 8 MPa 6 MPa 5 MPa 4 MPa 3 MPa
CLS–23N–11 -10°C ... +105°C -10°C ... +105°C -10°C ... +80°C 7 MPa 5 MPa 4 MPa – –
CLS–23E–11 -10°C ... +105°C -10°C ... +105°C -10°C ... +105°C 7 MPa 5 MPa 4 MPa – –
CLS–23N–12 -25°C ... +105°C -25°C ... +105°C -20°C ... +80°C 8 MPa 6 MPa 5 MPa – –
CLS–23E–12 -25°C ... +120°C -25°C ... +120°C -25°C ... +105°C 8 MPa 6 MPa 5 MPa – –
CLS–23NT–12 -30°C ... +150°C -30°C ... +150°C -20°C ... +80°C 8 MPa 6 MPa 5 MPa 4 MPa 3 MPa
CLS–23N–20 -25°C ... +105°C -30°C ... +150°C* -20°C ... +80°C 3 MPa 2,5 MPa 2 MPa – –
CLS–23E–20 -25°C ... +120°C -30°C ... +150°C* -25°C ... +105°C 3 MPa 2,5 MPa 2 MPa – –
CLS–23NT–20 -30°C ... +150°C -30°C ... +150°C -20°C ... +80°C 3 MPa 2,5 MPa 2 MPa 1,5 MPa 1 MPa
CLS–23N–21 -25°C ... +105°C -30°C ... +150°C* -20°C ... +80°C 3 MPa 2,5 MPa 2 MPa – –
CLS–23E–21 -25°C ... +120°C -30°C ... +150°C* -25°C ... +105°C 3 MPa 2,5 MPa 2 MPa – –
CLS–23NT–21 -30°C ... +150°C -30°C ... +150°C -20°C ... +80°C 3 MPa 2,5 MPa 2 MPa 1,5 MPa 1 MPa
CLS–23N–30 -25°C ... +105°C -30°C ... +150°C* -20°C ... +80°C 8 MPa 6 MPa 5 MPa – –
CLS–23E–30 -25°C ... +120°C -30°C ... +150°C* -25°C ... +105°C 8 MPa 6 MPa 5 MPa – –
CLS–23NT–30 -30°C ... +150°C -30°C ... +150°C -20°C ... +80°C 8 MPa 6 MPa 5 MPa 4 MPa 3 MPa
* Valid for top mounting (in vertical position)
tm – Medium
operating temp)
tp – Temp. in process
connection place
ta – Ambient temperature
range (on housing)
Variants:
N; E; Xi;
Variants:
NT; XiT;

CLS–23 © Dinel, s.r.o.
21
 
Equipment CLS–23 is packed in a polyethylene bag and the whole consignment is placed in a cardboard
box. The cardboard box is suitably lled to prevent mechanical damage during transport. Let the device
packed up till the use to prevent possible damage.
Transport to the customer is realized by forwarding company. Upon receipt, please check whether the
shipment is complete and corresponds to the extent of the order, or whether during the transport did
not occurred the damage of the packaging or the equipment. The device apparently damaged during
transport do not use and contact the manufacturer to resolve the situation.
If the device is transported further, then only wrapped in the original packaging and protected against
shocks and weather. Store the device in its original packaging in a dry place, sheltered from the weather,
with humidity up to 85% without the e󰀨ects of chemically active substances. Storage temperature range
is from -10 °C to +50 °C.
Sensor variants CLS–23_–20, 21 and 30 with the electrodes longer than 100 mm are tted
with protective caps at the ends of the electrodes to prevent damage of the electrodes,
box rupture or injury of handling persons. Before commissioning, remove the caps.