Dinel CLM-36 Manual de usuario

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.

INSTRUCTIONS MANUAL

průmyslová elektronika

Capacitive level meters CLM – 36

1. Basic description.......................................................................................................................4

2. Range of application .................................................................................................................4

3. Variants of sensors ...................................................................................................................5

4. Dimensional drawings...............................................................................................................6

5. Inuence of the tank shape on a linearity of measurement ......................................................8

6. Installation and putting into operation .......................................................................................9

7. Installation instructions .............................................................................................................9

8. Electrical connection...............................................................................................................12

9. Preparing of level meter for measuring...................................................................................14

10. Setting.....................................................................................................................................15

11. Use, manipulation and maintenance ......................................................................................17

12. Order code..............................................................................................................................18

13. Correct specication examples...............................................................................................19

14. Accessories ............................................................................................................................19

15. Safety, protections, compatibility and explosion proof............................................................19

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

17. Technical specications..........................................................................................................22

18. Table of relative permittivity ....................................................................................................26

19. General, conditions and warranty ...........................................................................................28

20. Packaging, shipping and storage............................................................................................28

Notes ..............................................................................................................................................29



Capacitive level meters CLM® are designed for continuous level measurement of liquids, powders

and bulk-solid materials in vessels, tanks, sumps, containers, silos, etc. CLM consists of the stain-

less steel housing with electronic module and the measuring electrode. The electronic part converts

the capacity into the current signal (4 ... 20 mA) or voltage signal (0 ... 10 V). Sensitivity (SPAN) and

initial capacity compensation (ZERO) can be uently set.

Level meters are produced in the following performances: N– for non-explosive areas,

NT – high temperature for non-explosive areas, Xi – Explosion proof – intrinsically safe for hazard-

ous (explosive) areas and XiT - high-temperature conf. for explosive environments. CLM are of-

fered in variants with various types of process connection (thread, Tri-clamp).

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.

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.

Alert, warning, danger

This symbol informs you about particularly important instructions for installation and operati-

on 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.





Capacitive level meters are suitable for continuous level measurement of liquid and bulk-solid

materials. CLMs are resistant to any changes in the atmosphere above the surface (vacuum,

pressure, vapours, dust).

 

 

CLM–36 © Dinel, s.r.o.

• CLM–36_–10 With uncoated rod electrode for level measurement of non-conductive

liquids (oils, diesel, petrol) and powder or bulk-solid materials (our, sand,

cement, plastic granulates, etc.).

Electrode length from 0.2 m to 5 m (for materials with a low permittivity

εr <10, the minimum electrode length is 0.5m).

• CLM –36_ –11 With fully (PFA) coated rod electrode suitable for surface level measurement

of water and other electrically conductive liquids. Also suitable for polluted

liquids in metallic storage tanks, concrete sumps, etc.

Electrode length from 0.2 m to 3 m.

• CLM–36_–12 With fully (FEP) coated rod electrode suitable for surface level measurement

of water and other electrically conductive liquids. Also suitable for polluted

liquids in metallic storage tanks, concrete sumps, etc.

Electrode length from 0.2 m to 3 m.

• CLM–36_–20 With uncoated rod electrode and reference tube for accurate level mea-

surement of clean non-conductive liquids (oils, diesel, petrol).

Electrode length from 0.2 m to 3 m.

• CLM–36_–22 With fully FEP coated rod electrode and reference tube for surface level

measurement of electrically conductive liquids, (e.g. in plastic or glass sto-

rage tanks) and where greater measurement accuracy is required. Electrode

insulation from FEP material.

Electrode length from 0.2 m to 3 m.

• CLM–36_–30 With uncoated stainless steel rope electrode and uncoated weight for

level measurement of bulk-solid materials (grains, sand, our, cement, etc.)

Shortened cable option.

Electrode length from 1 m to 20 m.

• CLM–36_–31 With uncoated stainless steel rope electrode and coated dynamic

anchorage for level measurement of bulk-solid materials in higher silos.

Electrode length from 1 m to 20 m.

• CLM–36_–32 With fully coated rope electrode and coated weight (rope insulation FEP,

weight insulation PTFE), for level measurement of electrically conductive

and non-conductive liquids.

Electrode length from 1 m to 20 m.

• CLM–36N–40 With two coated electrodes (rode insulation FEP, head fully PTFE), for

level measurement of aggressive liquids. Performance for non-explosive

areas only.

Electrode length from 0,2 m to 2 m.

 

CLM–36_–30

 

CLM–36_–10, 11, 12 CLM–36_–20, 22 CLM–36_–32 CLM–36N–40

* type threads: M36x2; G1"

Fig. 1: Dimensional drawings of the capacitive level meters

** for materials with a low permittivity (εr <10) the

minimum electrode length is E500.

thread *

CLM–36 © Dinel, s.r.o.

High temperature variants

CLM–36_T

CLM–36_–31

Rope electrode

Wall of container

(KV–31, PR–31)**

Spring

Anchor with

spherical joint

** Anchor welding cylinder KV–31 or Dust-tight

bushing PR–31 (see accessories)

Housing with

Tri-clamp coupling

Fig. 2: Dimensional drawings of the capacitive level meters

• In a curved tanks (most frequently hori-

zontal cylinder) capacity change during

measuring of electrically non-conductive

material is non-linear. Linearity is done by

theuse of referencetube(CLM–36_–20,22).

Linearization can be done also by reference

electrode (CLM–36_–40).

• Linearity is done by reference tube

(CLM – 36_–20, 22), or by reference

electrode (CLM – 36_–40).

• In the tank with straight wall (for example

vertical cylinder) and with the sensor

placed parallely with the wall capacity

change is linear.

• For sensors with two electrodes (in the

tank with straight or curved wall) is the

capacity change linear.

CLM-36_-10, 11, 12

CLM-36_-30, 31, 32

CLM-36_-20, 22, 40

all types

CLM-36N-40

Fig. 3: Inuence of the tank shape on a linearity of

measurement

 

CLM–36 © Dinel, s.r.o.

BASIC INFORMATION

• Level meters with coated electrode have protection cover at the end of electrode, which is

necessary take down before mounting.

• Level meters mount in vertical position to upper lid of tank or reservoir by steel welding ange

ON-36x2 (steel 11375), stainless steel welding ange NN-36x2 (stainless steel 1.4301), xing

nut UM-36x2 (stainless steel 1.4301) or Clamp ange.

• For mounting level meter to the metal tank or reservoir is not necessary to ground housing again.

• In case of installation in concrete sumps or silos it is properly to install level meter at metallic

auxiliary construction (console, lid, etc.) and then connect with metal all the time submerged

object, eventually with steel armouring.

• For measuring of material in plastic and glass vessels by level meter without reference tube

is necessary to connect grounding screw at housing with auxiliary electrode which is xed by

the appropriate method to the outer casing of vessels (or at inner wall). Material of auxiliary

electrode is necessary to choose with consideration to the working environment and properties

of measured material.

Please follow next 4 steps:

• 

• 

•     



CLM-36_-10, 11, 12

METAL AND NON-METAL VESSESLS

E- the length of electrode [mm] - the end of the electrode has to be dipped min. 20 mm below the lowest measured level

h- the distance from the bottom - min. 50 mm

a- the distance from the wall - min. approx. E/20

d- the diameter of auxiliary tube vessel - min. 40 + E/20 (smaller dimension has to be discussed with producer)

auxiliary electrode

width = min. 30 mm

(necessary only for

non-metal vessels)

Fig. 4: Installation of level meter with rod electrode

• 

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

 

VARIANTS WITH REFERENCE TUBE

CLM-36_-20, 22

h- the distance from the bottom - min. 50 mm with respect on possibility of presence of heavy fraction (water) in oil products

k - the distance from the wall - optional

DEEP VESSELS, CONTAINERS AND SILOS

CLM-36_-30, 32

connection to the

armouring

E- The length of electrode - the lower end of the electrode has to be dipped - min. 20 mm below the lowest measured level

h- The distance from the bottom - min. 100 mm

a- The distance from the wall - at least E/20, as far as possible from the walls, to the middle between the wall and the

vertical inlet

concrete silo

metal tank

Fig. 5: Installation of level meter with reference tube

Fig. 6: Installation of level meter with rope electrode

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