Dinel DLS-27 Series Manuel utilisateur

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 ..................................................................................................................... 3

2 . Variants of sensors .................................................................................................................. 4

3 . Dimensional drawing ................................................................................................................ 5

5 . Mechanical mounting ............................................................................................................... 6

4 . Installation and putting into operation ...................................................................................... 6

6 . Range of application and installation of individual variants ...................................................... 12

7 . Electrical connection ................................................................................................................ 13

8 . Settings .................................................................................................................................... 15

9 . Function and status indication .................................................................................................. 16

10 . Order code ............................................................................................................................. 17

11 . Correct specication examples .............................................................................................. 17

12 . Accessories ............................................................................................................................ 18

13 . Safety, protections, compatibility and explosion proof ........................................................... 18

14 . Use, manipulation and maintenance ...................................................................................... 19

15 . General, conditions and warranty .......................................................................................... 20

16 . Marking of labels .................................................................................................................... 20

17. Technical specications.......................................................................................................... 23

18 . Packings, shipping and storage ............................................................................................. 26

19 . FAQ (Frequently asked questions) ........................................................................................ 27



DLS–27 © Dinel, s.r.o.

3

Capacitive level sensors DLS® are designed for limit sensing of the level of liquid and bulk

solids in tanks, sumps, tubes or, hoppers, silos, etc. The sensors are manufactured in several

modications of sensing electrodes (rod and rope). The electrodes can be given an insulating

coating, a useful feature in case of adhesive, aggressive or conductive media sensing. Rod

electrodes are also available in a version with reference tube for measuring uids in tanks made

from non-conductive material.

Sensors are manufactured in the following congurations: N – for non-explosive areas, Xd –

For use in ammable dust atmospheres; Xi – Explosion proof – intrinsically safe for hazardous

(explosive) areas and XiM – Explosion proof – intrinsically safe for use in mines with methane

or ammable dust presence danger (see technical specications). There are high temperature

performance NT, XiT, XiMT available and various types of process connection (metric and pipe

thread, jointless connection Tri-clamp).

 

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.





Alloperationsdescribed in this instructionmanualhave to becarriedout 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.

4

 

• DLS–27_–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–27_–11 Fully coated short bar electrode, for sensing conductive liquids (water).

Horizontal mounting into tanks and tubes.

Electrode length 30 mm.

• DLS–27_–20 Semi-coated rod electrode for sensing slightly adhesive bulk solids

(cement, our) and non-conductive liquids (plant oils), horizontal, slant or

vertical mounting.

Electrode length from 0.1 m to 1 m.

• DLS–27_–21 Fully coated rod electrode (FEP insulation) for sensing conductive liquids

(water solutions, water), adhesive and aggressive materials, horizontal or ver-

tical mounting.

Electrode length from 0.1 m to 1 m.

• DLS–27_–22 Fully coated rod electrode (PFA insulation) with enhanced resistance,

for sensing aggressive conductive liquids and materials. Horizontal or vertical

mounting.

Electrode length from 0,1 m ... 1 m.

• DLS–27_–30 Dismountable uncoated rod electrode for sensing bulk solids and conduc-

tive or non-conductive liquids. Vertical or horizontal slant mounting.

Electrode length 0.1 m ... 3 m.

• DLS–27_–31 Fully coated rod electrode, for sensing aggressive conductive liquids (water,

various chemicals). Vertical mounting.

Electrode length from 0.1 m to 2 m.

• DLS–27_–40 Uncoated rope electrode and weight, for general purpose use in deeper

silos (bulk solids sensing – sand, gravel, cement) or sumps (sensing liquids).

Vertical mounting.

Electrode length from 1 m to 6 m.

DLS–27 © Dinel, s.r.o.

5

 

DLS – 27_ – 10 DLS – 27_ – 11 DLS – 27_ – 20 DLS – 27_ – 21, 22 DLS – 27_ – 30

DLS – 27_ – 31 DLS – 27_ – 40 High tempera-

tures variants

Tri-clamp

thread *

* Type of threads: G 3/4''

M27x2

M30x1,5

connection **

** connection:

Tri-Clamp CI34 (ø 34 mm)

6

Variants “C” with

connector

Variants “D” with

cable outlets

Variants “B” with cable

outlets

 



• 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

ametallic, constantly submergedobject,or withsteelwith steelreinforcementsin 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.

 

Please follow next 3 steps:

 

 

 

DLS–27 © Dinel, s.r.o.

7

Fig. 1: Vertical mounting

In case of vertical mounting, sensors can be mounted

into open, closed and pressurized tanks. The stated dis-

tances relate to the electrode length (longer electrode).

mm20050h

E

3

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40b

50

E

10c

40

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40d

20

E

20k









mm20050h

E

3

2

m

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4

3

p

E

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4

s

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1

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a

20

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40b

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10c

40

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40d

20

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20k





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

mm20050h

E

3

2

m

E

4

3

p

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4

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1

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10

1

a

20

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40b

50

E

10c

40

E

40d

20

E

20k









E– Electrode length in mm

In case of side wall mounting (Fig.

3), place the sensor outside the ow

of bulk solids or liquids.

Fig. 3: Correct and incorrect installation

into storage tank side wall

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 elec-

trode and insulation is inside the storage

tank (Figure 2 – on left).

Fig. 2: Correct and incorrect installation

with a long tube

VERTICAL MOUNTING FOR TYPE: All vertically mounted

sensors

CORRECT AND INCORRECT INSTALLATION

WITH A LONG TUBE

FOR TYPE: All from side mounted

sensors

CORRECT AND INCORRECT INSTALLATION

INTO STORAGE TANK SIDE WALL

FOR TYPE: All side mounted sen-

sors

8

mm20050h

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3

2

m

E

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p

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3

4

s

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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









Protective roof cover is recommended to

prevent mechanical damage of the sensor

electrode when vertical movement of ma-

terial could damage the sensing electrode

(abrasive materials, bulk-solid materials

forming blocks, piece goods).

Fig. 4: Protective roof mounting

E– Electrode length in mm

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–27_–10 type, which do not mechanically damage the electrode

and do not form separate blocks.

DLS–27_–10

!

Fig. 5: Slant wall mounting

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.

When weather conditions (wind, rain, snow)

clearly inuence the electrode (open sumps),

we recommend using types with an insulated

electrode (DLS-27_-21, 31).

h = 50 to 200 mm

Fig. 6: Bending of the electrode end to sense

unknown uids

PROTECTIVE ROOF MOUNTING FOR TYPE: DLS–27_–10 and DLS–

27_–20

SLANT WALL MOUNTING FOR TYPE: DLS–27_–10 and DLS–

27_–20

BENDING OF THE ELECTRODE END TO SENSE

UNKNOWN FLUIDS FOR TYPE: DLS–27_–30

9

max.

min.

E

 a

b

k

d

m

p

s

E

h

> 5

E1

E

c

E2

Conductive probe

CNP–18

Electrically connect

Auxiliary plate

electrode PDE-27

E2 = E1+50

E1, E2 – Electrode length in mm

Fig. 7: Auxiliary electrode in non-conductive tanks

In the case of the application of the sensor in an electrically non-conductive (e.g. plastic) vessel

in the vertical position, then for the correct function, it is recommended to connect the housing of

the level sensor with an auxiliary electrode. The auxiliary electrode can consist of a bar which is

permanently dipped into the medium (e.g. conductive probe CNP–18), or can be use the auxiliary

plate electrode (PDE-27), where the rst part has thread for install of the sensor and the second part

is installed from the side on the wall into the area for the expected switching of the level sensor. Both

parts of PDE-27 are connected by steel wire. The area of the plate auxiliary electrode is a minimum

200 cm2. For non-conductive liquids, the only variation possible is with the plate auxiliary electrode

and in this case it is necessary to place the level sensor to prevent the movement of electrodes and

the axis is at the distance of lmax = E1/10, lmin = 20 mm.

The level meter must not be installed in locations exposed

to direct solar radiation and must be protected against

the e󰀨ects of weather. In the event that installation in a

location with direct solar radiation is unavoidable, it is

necessary to install a shielding cover above the level

meter.

Fig. 8: Solar radiation shielding cover

AUXILIARY ELECTRODE IN NON-CONDUCTIVE

TANKS

FOR TYPE: DLS–27_–20, 21, 22,

30, 31

SOLAR RADIATION SHIELDING COVER FOR TYPE: All type

10

Cable

PVC hose

Hose clip

Fig. 10: Protective hose install

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 rec-

ommend upholding the tube diameter.

E– Electrode length in mm

Fig. 9: Bypass measuring tube

In the case of mounting in the pipe it is nec-

essary 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.

Fig. 11: Sensor mounting in a tube

If the sensor is placed vertically in an outdoor

environment or in the event of increased mechanical

stress, it is recommended to install a 15/10 mm PVC

protective hose on the "B" cable.

BYPASS MEASURING TUBE FOR TYPE: DLS–27_–20, 21, 22,

30, 31

PROTECTIVE HOSE INSTALL FOR TYPE: All sensors with cable

outlets

SENSOR MOUNTING IN A TUBE FOR TYPE: DLS–27_–10, 11, 21, 22

Dinel DLS-27 Series Manuel utilisateur

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