Dinel CLM-36 Manuale utente

Before level meters usage please read instructions in this service manual and keep it for further use. Service

manual is for all types of level meters series CLM-36. Producer reserves the right to make changes without any

previous announcement.

INSTRUCTIONS MANUAL

průmyslová elektronika

CapaCitive level meters Clm – 36

Obsah

1 . Measuring principle .................................................................................................................3

2 . Range of applications..............................................................................................................3

3 . Features of variants .................................................................................................................4

4 . Dimensions drawings ..............................................................................................................5

5 . Inuence of the tank shape on a linearity of measurement.................................................7

6 . Installation and putting into operation...................................................................................8

7 . Installation ................................................................................................................................8

8. Electrical connection ...............................................................................................................11

9. Preparing of level meter for measuring..................................................................................12

10. Setting .....................................................................................................................................13

11 . Use, manipulation and maintenance....................................................................................15

12 . Order code ..............................................................................................................................16

13 . Correct specication examples ............................................................................................16

14 . Accessories ............................................................................................................................16

15 . Safety, protections, compatibility and explosion proof .....................................................17

16 . Marking of labels....................................................................................................................18

17 . Specication...........................................................................................................................20

18 . Table of relative permittivity .................................................................................................24

CLM–36 © Dinel, s.r.o.

1 . Measuring principle

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 stainless

steel housing with electronic module and the measuring electrode. Type of measuring electrode is

dened by kind of use and type of measured media. 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. CLMs are offered in version (N) for non-hazardous

environments or (Xi) version to explosive areas up to zone 0 or zone 20, high temperature performance

and several types of process coupling are also available.

2 . range of applications

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). It is also partially resistant to the formation of foam on the surface.

All operations described in this instruction manual have to be carried out only by trained

personnel or an accredited person. Warranty and post warranty service must be exclusively

carried out by the manufacturer.

Improper use, installation or set-up of the level meter can result in crashes in the application

(overlling of the tank or damage of system components).

The manufacturer is not responsible for improper use, losses of work caused by either direct

or indirect damage, and for expenses incurred during installation or use of the level meter.

safety

used syMbols

To ensure maximum safety of control processes, we have dened the following safety instructions

and information. Each instruction is labeled 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 installa-

tion and operation. Not observing these instructions may cause disturbance, dam-

age or destruction of equipment or may cause injury

Information

This symbol indicates particularly important characteristics of the device.

Note

This symbol indicates helpful additional information.

Valid for:

In the border are the types CLM, for which is intended the chapter.

all types

3 . features of variants

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.). Max. length 5m.

CLM –36_–11 With fully (PFA) coated rod electrode for level measurement of water and

conductive liquids incl. wasted liquids in metallic vessels, concrete sumps,

reservoirs, etc., better behaviour against aggressive media, lower adhesion

to some complicated media, chemical resistance. Max. length 3m.

CLM –36_–12 With fully (FEP) coated rod electrode for level measurement of water and

conductive liquids incl. wasted liquids in metallic vessels, concrete sumps,

reservoirs, etc., better behaviour against aggressive media, lower adhesion

to some complicated media, chemical resistance. Max. length 3m.

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

urement of clean non-conductive liquids (oils, diesel, petrol). By means of

reference tube the output signal does not depend on the dimensions and

shapes of a vessel. Max. length 3m.

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

measurement of conductive liquids. Main use is for measurement in plastic

vessels or tanks. Impossible to use for waste and high viscosity liquids and

bulk-solid materials. Max. length 3m.

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

for level measurement of bulk-solid materials (grains, sand, our, cement,

etc.). Max. length 20m.

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

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

Max. length 20m.

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. Max. length 20m.

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

level measurement of aggressive liquids. Performance for non-explosive

areas only. Max. length 2m.

CLM–36 © Dinel, s.r.o.

CLM–36_–30

4 . diMensions drawings

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

Thread*

* Threads : M36x2; G1"

Fig. 1: Dimensional drawings of the capacitive level meters

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

CLM–36 © Dinel, s.r.o.

5 . influence of the tank shape on a linearity of MeasureMent

• In a curved tanks (most frequently

horizontal cylinder) capacity change

during measuring of electrically

non-conductive material is non-linear.

• 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-36_-40

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

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:

• installation

• electrical connection

• preparing of level Meter for Measuring

6 . installation and putting into operation

7 . installation

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

• setting

CLM–36 © Dinel, s.r.o.

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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