RST DLS-35 Series User manual
Read the instructions published in this manual carefully before the rst use of the sensor.
Keep the manual in a safe place. The manufacturer reserves the right to make changes without prior notice.
INSTRUCTION MaNUal
CapaCitive level sensors Dls–35
CONTENT
1. Brief ............................................................................................................................................4
2. Variants of sensors .....................................................................................................................5
3. Dimensional drawings ................................................................................................................6
4. Mounting recommendation.........................................................................................................8
5. Range of application...................................................................................................................12
6. Electrical connection...................................................................................................................13
7. Sensor settings...........................................................................................................................15
8. Function and status signalization ...............................................................................................17
9. Order code..................................................................................................................................18
10. Correct specication examples.................................................................................................18
11. Accessories...............................................................................................................................19
12. Safety, protections, compatibility and explosion proof..............................................................19
13. Use, manipulation and maintenance ........................................................................................19
14. General conditions and warranty..............................................................................................19
15. Marking of labels ......................................................................................................................20
16. Specications ...........................................................................................................................22
17. Packaging, shipping and storage .............................................................................................23
DLS–35 © Dinel, s.r.o.
4
All operations described in this instruction manual have to be carried out by trained person-
nel 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,
(overlling of the tank or damage of system components).
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.
Safety
USed SymbolS
To ensure maximum safety of control processes, we have dened the following safety instructions
and information. Each instruction is labelled with the appropriate pictogram.
Alert, warning, danger
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 equip-
ment or may cause injury.
Information
This symbol indicates particularly important characteristics of the device.
Note
This symbol indicates helpful additional information.
1 . brief
Capacitive level sensors DLS® are designed for limit sensing of the level of liquids and bulk solids in
tanks, tubes, hoppers, silos, sumps, etc. The sensors are made in several modication of sensing
electrodes (bar, rod and rope). The electrodes can be given an insulating coating, a useful feature
in case of adhesive, aggressive or conductive media sensing.
Sensors are manufactured in the following designs: N – for non-explosive areas, NT– high-temperature
design for non-explosive areas.
5
© Dinel, s.r.o. DLS–35
2 . VariantS of SenSorS
DLS–35_–10
Uncoated short bar electrode for sensing non-adhesive bulk solids (sand, sugar)
and non-conductive liquids (petroleum products, oils). Horizontal mounting.
Electrode length 50 mm or 100 mm.
DLS–35_–11 Fully coated short bar electrode, for sensing conductive liquids (water).
Horizontal mounting into tanks and tubes.
Electrode length 30 mm.
DLS–35_–14 like DLS-35_-10, but higher pressure resistance
DLS–35_–20
Semi-coated rod electrode for sensing slightly adhesive bulk solids (cement,
our) and non-conductive liquids. Horizontal, slant or vertical mounting.
Electrode length 0.1 m ... 1 m.
DLS–35_–21 Fully coated rod electrode (FEP insulation) for sensing conductive liquids
(water solutions, water), adhesive and aggressive materials. Horizontal or
vertical mounting.
Electrode length 0.1 m ... 1 m.
DLS–35_–22
Fully coated rod electrode (PFA insulation) with enhanced resistance to
permeation (diffusion) of vapours and gases. For measuring the level of water
and other conductive liquids in the food, pharmaceutical and chemical industries.
Suitable for high-temperature applications (hot steam), volatile aggressive
liquids, etc. Horizontal or vertical mounting. Electrode length 0.1 m ... 1 m.
DLS–35_–23 like DLS-35_-20, but higher pressure resistance
DLS–35_–24 like DLS-35_-21, but higher pressure resistance
DLS–35_–25 like DLS-35_-22, but higher pressure resistance
DLS–35_–30 Dismountable uncoated rod electrode for sensing bulk solids and conductive
or non-conductive liquids. Vertical or horizontal slant mounting.
Electrode length 0.1 m ... 3 m.
DLS–35_–31 Fully coated rod electrode for sensing aggressive conductive liquids (water,
chemicals). Vertical mounting.
Electrode length 0.1 m ... 3 m.
DLS–35_–40 Uncoated stainless steel rod electrode with reference tube, for sensing non-
conductive liquids (petroleum products, oil) in non-conductive tanks. Vertical
mounting. Maximum electrode length 1 m.
DLS–35_–41 Fully coated stainless steel rod electrode with reference tube, for sensing
conductive liquids in non-conductive tanks. Vertical mounting. Maximum
electrode length 1 m.
DLS–35_–43 like DLS-35_-40, but higher pressure resistance
DLS–35_–44 like DLS-35_-41, but higher pressure resistance
DLS–35_–50
Uncoated rope electrode and weight for general purpose in deeper storage
tanks (bulk solids sensing e.g. sand, gravel, cement) or sumps (sensing liquids).
Vertical mounting.
Maximum electrode length 6 m.
DLS–35 © Dinel, s.r.o.
6
3 . dimenSional drawingS
DLS – 35_ – 10, 14 DLS – 35_ – 11 DLS – 35_ – 20, 23 DLS – 35_ – 21, 22,
24, 25
thread *
* types of threads: G 3/4''
M27x2
M30x1.5
NPT 3/4
3510
13
10
42
E50 / E100
22
15
35
16
36
6,5
64
E100 - E1000
10
10
6
4646
E100 - E3000
E100 - E3000
8
DLS – 35_ – 30 DLS – 35_ – 31
13
30
E100 - E1000
E/3
10
8
Measuring electrode
Insulating bushing
Sensor housing
End of sensor
Cable gland
7
© Dinel, s.r.o. DLS–35
DLS – 35_ – 40, 43 DLS – 35_ – 41, 44 DLS – 35_ – 50
Design “A” with short stainless
steel gland Design "B" with plastic
threaded cable gland
Design "C"
with connector M12
+
-
6,5
12
18
12
20
+
-
15
20
+
-
M12
13
22
105
E500 - E6000
50 10
3
5
Design „H“ with cable gland for protected
hoses – for use in an outdoor environment
or in an area with increased moisture.
Design “V” with plastic cable gland
with spiral relief – in case of increased
mechanical wear on the cable.
spiral relief
protective hose
(ø 13 mm)
DLS–35 © Dinel, s.r.o.
8
4 . moUnting recommendationS
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 or TriClamp®process connection.
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 a metallic, constantly
submerged object, or with steel with steel reinforcements in concrete (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.
In case of vertical mounting, sensors can be mounted into open,
closed and pressurized tanks. The stated distances relate to the
electrode length (longer electrode).
All vertically mounted sensors
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
E– Electrode length in mm
Figure 1: Vertical mounting
Figure 2: Correct and incorrect installation with a long tube
In the case of side wall mounting. it
is necessary to avoid long tting tubes,
where sensed medium could accumulate
(g. on right). We recommend mounting
the sensor so that the whole sensing
electrode and insulation is inside the
storage tank (Figure 2 – on left).
All from side mounted sensors
k
d
E
c
9
© Dinel, s.r.o. DLS–35
m
p
s
E
Figure 3: Correct and incorrect installation into storage tank side wall
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
E– Electrode length in mm
Figure 4: Protective roof mounting
Protective roof mounting is recommended to prevent
mechanical damage of the sensor electrode when
vertical movement of material could damage the
sensing electrode (abrasive materials, bulk-solid
materials forming blocks, piece goods).
For: DLS–35_–10, 14, 20, 23
All from side mounted sensors
In case of side wall mounting (Fig. 3), place the sensor
outside the ow of bulk solids or liquids.
In the case of slant wall mounting it is necessary to eliminate tting tubes, thereby reducing
medium sedimentation. The wrong example of mounting is shown in Figure 5 on the left. The ap-
propriate mounting on the auxiliary vertical plate is shown in the middle. In some cases the variant
is allowed as shown in Fig. 5 on the right. But this is recommended only for measuring bulk-solid
materials by a sensor of the DLS–35_–10 type, which do not mechanically damage the electrode
and do not form separate blocks.
For types: DLS–35_–10, 14, 20, 23
Figure 5: Slant wall mounting
DLS–35_–10
!
DLS–35 © Dinel, s.r.o.
10
h
In case of vertical installation for sensing the level
of unknown (conductive and non-conductive)
liquids in tanks or sumps, it is appropriate to bend
the electrode into a right angle. This will increase
the local sensitivity and accuracy of sensing the
level at the spot of the bend.
For: DLS–35_–30
h = 50 to 200 mm
Figure 7: Bending of the electrode end to sense
unknown uids
When weather conditions (wind, rain, snow) clearly
inuence the electrode (open sumps), we recom-
mend using types with an insulated electrode
(DLS-35_-21,22,24,25,31).
mm20050h
E
3
2
m
E
4
3
p
E
3
4
s
E
3
1
E
10
1
a
20
E
40b
50
E
10c
40
E
40d
20
E
20k
Mounting in a bypass measuring tube. We recommend upholding the tube diameter.
For types: DLS–35_–20,21,22,23,24,25, 30, 31
E– Electrode length in mm
Figure 8: Bypass measuring tube
b
E
11
© Dinel, s.r.o. DLS–35
max.
min.
E
a
> 5
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.
For types: DLS–35_–10,14,11,21,22,24,25
In case of vertical mounting, it is possible to
use the sensor for simple two-state regula-
tion 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.
For types: DLS–35_–20,21,22,23,24,25,30,31
E– Electrode length in mm
Figure 10: Sensor mounting in a tube
Figure 11: Two-state level regulation by
hysteresis setting
In the case of vertical mounting especially on
existing tanks, it is necessary to select the pipe
length as short as possible to avoid vapour
condensation, or sedimentation of impurities.
A similar situation occurs when the sensing
electrode goes through the concrete ceiling of
the silo. The hole diameter should be at least
50 mm (based on ceiling thickness).
All vertically mounted sensors
Figure 12: Long tting tubes in vertical mounting
> 5
> 5
DLS–35 © Dinel, s.r.o.
12
5 . range of application and inStallation of indiVidUal VariantS
DLS–35_–10, 14
Is produced in two versions – with 50 mm or 100 mm electrode. The shorter version (E50) is suitable
for clean non-conductive liquids level sensing (oils, diesel, petrol, etc.). The longer version (E100) is
designed for non-adhesive bulk solid or non-adhesive powder materials (plastic granulates, sand,
sugar, grains, detergents, etc.) and other slightly impure, non-conductive liquids (lubricants, plant
oils). The sensor mounts directly into a vessel or storage tank wall (ideally in the horizontal position)
by means of a welding ange or stainless steel xing nuts. In case of level sensing of low-permittivity
media in non-metal storage tanks, we recommend mounting the sensor on an auxiliary metal-plate
electrode with min. area of 200 cm2. Variant "14" has higher pressure resistance.
DLS–35_–11
Specied for level sensing of conductive liquids (water and water solutions). It can be used to identify
the boundary between different permittivity of uids (e.g. water – oil). The sensor is mounted directly
into the side wall of a tank or in a pipe (horizontal position) by means of a steel or stainless steel
welding ange.
DLS–35_–20, 23
Designed for limit level detection of bulk solids with low specic weight and permittivity (cement,
hydrated lime, our), and for materials expected to have changing properties (y ash, sawdust, feed
mixtures, etc.). It is possible to use it for sensing non-conductive uids containing a small amount
of water (up to 2%) or other impurities (plant oils, liquid propane, etc.). The sensor is mounted di-
rectly into the wall of a vessel or storage tank using steel welding anges or xing nuts horizontally,
slanted from the side or vertically. It is recommended to mount a sensor with an electrode longer than
300 mm only in the vertical position. Hollow spaces should be minimized between the electrode and
the wall where the sensed material can accumulate (see application notes). In case of level sensing
of low-permittivity media in non-metal storage tanks, it is recommended to mount the sensor on an
auxiliary metal-plate electrode with min. area of 400 cm
2
. Variant "23" has higher pressure resistance.
DLS–35_–21, 22, 24, 25
Specied for conductive liquids level sensing (water, water solutions, mud, etc.). It reacts to partial
or full immersion of the electrode (depending on the adjusted sensitivity). The lower the sensitivity,
the higher the sensor's resistance to impurities and clinging remnants of material. The sensor with
electrode length of up to 200 mm can be desensitized to complete water immersion, so it can be
operated in the horizontal position. The sensor can be operated in the vertical position with any length
up to 1 m. The sensor is mounted directly into the wall of the tank in horizontal or vertical position
by applying a steel or stainless steel welding ange. For variant "22", the material PFA is used to
insulate the electrode. This variant is more resistant to aggressive uids. Variants "24" and "25" have
higher pressure resistance.
DLS–35_–30
Designed for sensing conductive and non-conductive liquids and bulk solids. It is not recommended
to install the sensor into closed vessels (storage tanks) where intensive water vapour condensation
occurs. The sensor reacts to electrically conductive liquids just by touch of the end of electrode. To
react to a non-conductive liquid (bulk solid), it is necessary to have 5 ÷ 20% immersion of the electrode
according to the sensor's adjusted sensitivity and permittivity of the sensed material. The sensor
is mounted directly into the wall of a tank, vessel or sump in slant or vertical position by means of
a welding ange or xing nut. In non-metal storage tanks, we recommend mounting the sensor on
an auxiliary metal-plate electrode with min. area of 500 cm2.
13
© Dinel, s.r.o. DLS–35
DLS–35_–31
Designed for limit level detection of conductive liquids (water and solutions of various chemicals).
It is possible to place the sensor electrode into closed vessels (storage tanks), open canals and
sumps. The sensor reacts to the conductive uid level after 2 ÷ 20% immersion of the electrode
based on the sensor's set sensitivity. The sensor is mounted vertically directly into a vessel, tank
or open (concrete, plastic) sumps by means of welding anges or xing nuts. When installing the
sensor into open sumps, it is necessary to secure conductive connection of the sensor housing with
the sensed liquid. It is possible to use a metal structure, armouring or another auxiliary electrode.
If you must sense an aggressive medium in a closed plastic container, contact the manufacturer.
DLS–35_–40, 43
Designed for sensing conductive and non-conductive liquids in non-metal storage tanks. It is not
recommended to install the sensor into closed vessels (storage tanks) where intensive water vapour
condensation occurs. The sensor reacts to electrically conductive liquids just by touch of the end of
electrode. To react to non-conductive liquid, it is necessary to have 5 ÷ 20% immersion into a medium
based on the sensitivity set on the sensor and the permittivity of the sensed material. The sensor is
mounted directly into a tank, hopper or sump in slant or vertical position by means of welding ange
or stainless steel xing nut. Variant “43” has higher pressure resistance.
DLS–35_–41, 44
Designed for sensing conductive liquids (water and water solutions of various chemicals) in non-metal
containers. The measuring part of the sensor can be installed into closed vessels (storage tanks),
open channels and sumps. The sensor reacts to the conductive liquid level after 2 ÷ 20% immersion
of the electrode based on the sensor's set sensitivity. The sensor is mounted vertically directly into
a vessel, tank or open (concrete, plastic) sumps by means of welding anges or xing nuts. If you
must sense an aggressive medium in a closed plastic container, contact the manufacturer. Variant
"44" has higher pressure resistance.
DLS–35_–50
For sensing conductive and non-conductive liquids and bulk solids at greater depths (sewerage
sumps, shafts, wells, cement storage tanks, sand, gravel, etc.). It is not appropriate to place the sen-
sor electrode into closed containers (storage tanks) where intensive condensation of water vapour
occurs. The sensor reacts to electrically conductive liquids just by touch of the end of electrode. To
react to non-conductive liquid or bulk solids, a 5 ÷ 20% immersion into the material is necessary
based on the sensitivity set on the sensor and the permittivity of the sensed material. The sensor
is mounted vertically directly into the wall of a storage tank or sump. For open (concrete) sumps, it
can be mounted on an auxiliary metal structure conductively connected with the sensed material.
For mounting, you can use supplied welding anges or xing nuts.
DLS–35 © Dinel, s.r.o.
14
Figure 13: NPN output type sensor connection
Legend:
(1,...) – numbers of terminals inside
the connector socket
BK – Black
BN – Brown
BU – Blue
output (BK)
0V (BU)
+U (BN)
Figure 14: PNP output type sensor connection
Figure 15: Inside of the connector socket
Electrical connection can only be made when de-energized!
For switching supply sources, it is necessary to check that the input is galvanically separated
from the network side and that they are tted with a lter suppressing the conforming inter-
ference (terminals + a – collectively oscillate against ground potential), or the interference
is removed in another manner.
In case of strong ambient electromagnetic interference, paralleling of conductors with power distribution,
or for distribution to distances over 30 m, we recommend using shielded cable.
Note: In case of strong ambient electromagnetic interference, paralleling of conductors with power
distribution, or for the distribution to distance over 30 m, we recommend using shielded cable.
Sensors DLS-35 with type of cable outlet A, B, V or H are connected to assessing units perma-
nently connected by PVC cable. Design diagrams are provided on page 7.
Sensors DLS-35 with connection method type C (see page 7) are connected to assessing units
by means of a connector socket with compression cable (length 2 or 5 m), or by means of a con-
nector socket without cable (see accessories). In this case the cable is connected to the inside
pins of the socket according to Figure 15. The recommended diameter of this cable is 4 to 6 mm
(the recommended cross-sectional area is 0.5 to 0.75 mm2).
6 . electrical connection
A sensor with NPN or PNP output can be loaded only by resistive or inductive load. The positive
pole of the supply voltage (+U) is connected to the brown wire BN or pin connector no.1, the nega-
tive pole (0 V) is connected to the blue wire BU or pin connector no. 3 and load on the black wire
BK or pin connector no. 4. The capacitative loads and low resistance loads (bulb) is evaluated by
the sensor as a short circuit.
Connection diagrams are listed in Figures 13 and 14.
15
© Dinel, s.r.o. DLS–35
+-
7 . SenSor SettingS
cable gland
or connector
Figure 16: Top view of sensor control
elements
orange LED
sensitive spot +sensitive spot -
green LED
Settings are performed by touching a magnetic pen on
sensitive spots indicated as "+" or "
–
" located on the end
of sensor in 4 possible modes:
1. QUICK SETTING
1.
2.
The tank is empty or the level of measured medium in the tank is in a state where the sensor
electrode is no longer submerged.
Place the magnetic pen for at least 5 seconds* on the sensitive spot "
–
" of the sensor (rst
both LEDs illuminate, after approx. 3 s the orange LED will ash 3 times, and after another ap-
prox. 2 seconds the orange LED ashes again 3 times- now you can remove the magnetic pen).
The sensor is now set to the basic mode O without the presence of medium.
a) Setting the mode O (It is closed when submerged)
This function can be used for quick setting of the sensor, or in case it is not possible (or is very
complicated) to change the level of the medium for setting the sensor. Suitable also for putting
into operation.
1.
2.
The tank is empty or the level of measured medium in the tank is in a state where the sensor
electrode is no longer submerged.
Place the magnetic pen for at least 5 seconds* on the sensitive spot "
+
" of the sensor (rst both
LEDs illuminate, after approx. 3 s the orange LED will ash 3 times, and after another approx.
2 seconds the orange LED ashes again 3 times - now you can remove the magnetic pen).
The sensor is now set to the basic mode O without the presence of medium.
b) Setting the mode C (It is open when submerged)
If no other agreement the mode "O" is set on all sensors straight from the factory.
*) Maximum 10 seconds.
1. Quick setting - the user does not know precisely
to what medium the sensor should be set, he only
wants to put the sensor into operation (usually
upon receiving it) and check to see if the sensor is
generally functional
2. Basic setting - the user has the medium available
and can perform on the sensor its ooding and
drainage (lling and emptying)
3. Setting of sensitivity - for additional correction of set
limits - e.g. very high sensitivity can be set
4. Hysteresis setting - if the user wants to use distan-
cing of the point of closing and opening - e.g. for
two-state level regulation by using one vertically
installed sensor
DLS–35 © Dinel, s.r.o.
16
If the orange LED is illuminated and the green LED is ashing, the sensor is correctly set.
If alternating ashing of the orange and green LED occurs, the sensor did not recognize
the limits for closing and opening. In this case, nd out whether the minimum and maximum
levels are not set too close to one another.
-
-
3.
4.
5.
Increase the level of the measured medium in the tank up to a level where you want the sensor
to detect the presence of the medium.
Place the magnetic pen for at least 2 seconds** on the sensitive spot "+" of the sensor (until
both LEDs illuminate) and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
Check the state of indicators:
For safety reasons, we recommend setting the mode "O" for level sensing (the sensor is closed
upon immersion). It is for failure safety reasons – eventual failure of sensor behaves similarly as
an exceeding of the limit state. Analogically, for the maximum level it is recommended to set the
mode "C" (the sensor is open upon immersion).
b) Setting the mode C (It is open when submerged)
1.
2.
3.
4.
5.
Bring the level of the measured medium in the tank to a state so that the sensor electrode would
be uncovered.
Place the magnetic pen for at least 2 seconds** on the sensitive spot "
+
"of the sensor (until
both LEDs illuminate) and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
Increase the level of the measured medium in the tank up to a level where you want the sen-
sor to detect the presence of the medium.
Place the magnetic pen for at least 2 seconds** on the sensitive spot "
–
" of the sensor (until
both LEDs illuminate) and then remove the magnetic pen. Settings are conrmed by three ashes
of the orange LED.
Check the state of indicators:
If the orange LED is not illuminated and the green LED is ashing, the sensor is correctly set.
If alternating ashing of the orange and green LED occurs, the sensor did not recognize
the limits for closing and opening. In this case, nd out whether the minimum and maximum
levels are not set too close to one another and possible repeat the settings.
-
-
**) Maximum 4 seconds.
a) Setting the mode O (It is closed when submerged)
2. BASIC SETTING
Bring the level of the measured medium in the tank to a state so that the sensor electrode would
be uncovered.
Place the magnetic pen for at least 2 seconds** on the sensitive spot "
–
" of the sensor until
both LEDs illuminate and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
1.
2.
For setting sensitivity and switching mode, in case it is possible to change the level of the
medium for setting the sensor.
17
© Dinel, s.r.o. DLS–35
3. SETTING OF SENSITIVITY
By the procedure stated in the previous chapter, limits are set for closing and opening (sensi-
tivity of the sensor). If you want to simply increase or decrease this set sensitivity (if medium
adheres to the electrode), it can be done in the following manner:
a) Increasing sensitivity
1.
2.
Place the magnetic pen for longer than 0.2 seconds but for shorter than 2 seconds on the
sensitive spot "+" of the sensor. Settings are conrmed by three ashes of the orange LED.
Increasing sensitivity this way can be performed repeatedly.
b) Decreasing sensitivity
1.
2.
Place the magnetic pen for longer than 0.2 seconds but for shorter than 2 seconds on the
sensitive spot "
–
"of the sensor. Settings are conrmed by three ashes of the orange LED.
Decreasing sensitivity this way can be performed repeatedly.
Sensitivity can be decreased if the medium sticks to the electrode
a) Setting the mode Draining the level
(If the medium level reaches its maximum level, the sensor output closes. After draining
the medium, when the level drops to the minimum level, the sensor output opens.)
4. HYSTERESIS SETTING
This function can be used for simple control of replenishing (draining) the level by means of a
single sensor. The sensor must be placed in the vertical position and the end of the electrode
must at least reach the minimum level.
If the orange LED is illuminated and the green LED is ashing, the sensor is correctly set.
If alternating ashing of the orange and green LED occurs, the sensor did not recognize
the limits for closing and opening. In this case, nd out whether the minimum and maximum
levels are not set too close to one another.
-
-
3.
4.
5.
Increase the level of the measured medium in the tank up to maximum level.
Place the magnetic pen for at least 20 seconds** on the sensitive spot "+" of the sensor until
both LEDs illuminate and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
Check the state of indicators:
Bring the level of the measured medium in the tank to minimum level.
Place the magnetic pen for at least 20 seconds** on the sensitive spot "
–
" of the sensor until
both LEDs illuminate and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
1.
2.
DLS–35 © Dinel, s.r.o.
18
Figure 17: Time intervals for touching the magnetic pen on the sensitive
spots for individual functions of the sensor
1. QUICK SETTING
2. BASIC SETTING
3. SETTING OF
SENSITIVITY
4. HYSTERESIS
SETTING
b) Setting the mode Replenishing the level
(If the medium level drops to its minimum level, the sensor output closes. After replenishing the
medium, when the level rises to the maximum level, the sensor outpu opens.)
If the orange LED is illuminated and the green LED is ashing, the sensor is correctly set.
If alternating ashing of the orange and green LED occurs, the sensor did not recognize
the limits for closing and opening. In this case, nd out whether the minimum and maximum
levels are not set too close to one another.
-
-
3.
4.
5.
Increase the level of the measured medium in the tank up to maximum level.
Place the magnetic pen for at least 20 seconds** on the sensitive spot "
–
" of the sensor (un-
til both LEDs illuminate) and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
Check the state of indicators:
Bring the level of the measured medium in the tank to minimum level.
Place the magnetic pen for at least 20 seconds** on the sensitive spot "
+
" of the sensor
until both LEDs illuminate and then remove the magnetic pen. Settings are conrmed by three
ashes of the orange LED.
1.
2.
19
© Dinel, s.r.o. DLS–35
level state mode output state LED indicator "STATE"
minimum level sensing
OCLOSED
(illuminated)
OOPEN
(not illuminated)
LED indicator colour function
"RUN" green
Measuring function indication
ashing – (repeats according to the period of measuring approx.
0.5 s) – correct function of level detection
dark – incorrect installation or malfunction.
alternating ashing of the green and orange LED – error in settings
(the sensor did not recognize states for open and closed)
"STATE" orange
Settings indication
permanent shine – the sensor is closed
dark – the sensor is open
3 short ashes – settings conrmed
simultaneous shine of green and orange LED – when applying the
mag. pen, when the setting is conrmed
8 . fUnction and StatUS Signalization
level state mode output state LED indicator "STATE"
maximum level sensing
CCLOSED
(illuminated)
COPEN
(not illuminated)
DLS–35 © Dinel, s.r.o.
20
9 . order code
10 . correct Specification exampleS
process connection:
DLS –35
10 – short bar, uncoated, lengths 50 or 100mm
11 – short bar, fully coated, xed length 30 mm
14 – like 10, but higher pressure resistance
20 – rod, partially coated, length 0.1 ... 1 m
21 – rod, fully coated (FEP), length 0.1 ... 1 m
22 – rod, fully coated (PFA), length 0.1 ... 1 m
23 – like 20, but higher pressure resistance
24 – like 21, but higher pressure resistance
25 – like 22, but higher pressure resistance
30 – rod, uncoated (dismountable), length 0.1 ... 3 m
31 – rod, fully coated, length 0.1 ... 3 m
40 – rod, uncoated with ref. tube, length 0.1 ... 1 m
41 – rod, fully coated (FEP) with ref. tube, length 0.1 ... 1 m
43 – like 40, but higher pressure resistance
44 – like 41, but higher pressure resistance
50 – rope with weight, uncoated, length 1 ... 6 m
electrode length in mm
– – –– E
type of output:
N – NPN (open collector)
P – PNP (open collector)
connection method: A – stainless steel compression
gland (+ cable length)
B – plastic threaded cable gland
(+ cable length)
C – connector (socket not included
with sensor, recommended
type - see accessories.
V – plastic cable gland with spiral
(+ cable length)
H – plastic cable gland for protec-
tive hose (+ cable length)
type and design of electrode:
mech. design:
G– pipe thread G 3/4"
M27 – metric thread M 27x2
M30 – metric thread M 30x1.5
NPT – pressure thread NPT 3/4
cable – cable length in m
N– non-explosive areas
NT - high-pressure design
DLS–35N–10– M27–N– B E100 cable 5 m
(N) designed for use in normal areas; (10) uncoated short bar electrode, (M27) process connection by thread M27;
(N) output type NPN; (B) plastic cable gland; (E100) electrode length 100 mm
DLS–35N–21–G–P–C E580
(N) designed for use in normal areas; (21) rod fully coated electrode; (G) process connection by thread G3/4"; (P) output type PNP;
(C) connector; (E580) electrode length 580 mm.
DLS–35N–30–M30–P–C E1420
(N) designed for use in normal areas; (40) rod uncoated electrode with reference tube; (M30) process connection by thread M30,
(P) output type PNP; (C) connector; (E1420) electrode length 1420 mm.
This manual suits for next models
15
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