Tecfluid LC-40 ADF User Manual

Level Detector

Series

instrumentación

para fluidos

LC-40 ADF

Instructions Manual

Technical Data

• Mounting: Vertical / Side mounting.

• Fittings: EN 1092-1 DN-65 Flanges

Others on demand

• Minimum liquid density: 0.45 kg/l

• Liquid viscosity: maximum 3.000 mPa.s

• Repeatability: ±3 mm of the level .

• Materials: EN 1.4404 (AISI-316L)

On demand: PTFE, PVC, PP, PVDF

• Electrical housing: Metal alloy aluminium
without copper

• Pressure: PN-16

On demand: PN-40 ... PN-400

• Liquid temperature:

Depends on the material, see page 3

• Ambient temperature range: -20…+40 ºC

• Degree of protection: IP67

• Complies with 97/23/EC Directive

for pressure vessels.

R-MI-LC40ADF Rev.:0 English Version

This equipment is considered as being a

!

pressure accessory and NOT a safety
accessory as defined in the 97/23/EC
directive, Article 1, paragraph 2.1.3.

Operation

The changes in level are followed by the float
mounted on a pivoted arm.

On the opposite end from the float there is a
sealed permanent magnet which acts on
another magnet, situated in the inside of the
electrical housing, that acts on the limit
switches.

Applications:

• Liquid storage tanks

• Hot water storage.

• Control of steam condensates storage

tanks .

• On-Off of pumps.

• Maximum and minimum level control.

RECEPTION

The LC-40 level detectors are supplied individually packed for protection d uring transport .
On reception of the level detector, check:

− That the float pivots freely in the fork that supports it.

− That the pivot shaft has the two split pins, one on each end.

Important:

!

If the operation of the limit switches is checked before installation, this must be done in a non
hazardous area.

To check the limit switch, unscrew the electrical housing cover to gain access to the electrical
connections.

Move manually the float from the bottom stop to the top stop of the fork.
The signal at the electrical connection terminals will vary according to the float’s position (with the

AMM and AMR this can be checked using a multimeter).
Once the correct working of the complete s ystem has been checked, mount the level detector as

described below.

MOUNTING

The models designed to be mounted in the side of the tank should be installed in a position so that
the float can move freely in a vertical plane.

The LC-40V y LC-40VR models require installation in the top of the tank.

!

Important:

Check that the working pressure is not above that specified on the instrument’s identification label.
Check that the ambient and liquid temperatures are within the limits specified on pages 2 & 3.

Limit switch characteristics and connections.

Maximum ambient temperature: 40 ºC

AMM: Vmax: 250 V
Imax: 3 A

1. Earth

2. Common

3. Normally closed

4. Normally open
AMD: Vnom: 8.2 VDC

Max. level I > 2.2 mA
Min. level I < 1.1 mA

1. Earth

2. Positive

3. Negative

4. Not connected
AMR: Vmax: 250 V

Imax: 0.5 A
Pmax: 60 VA

1. Earth

2. Common

3. Normally closed

4. Normally open

1
2
3
4

2

MAINTENANCE

Mechanical:
Maintain the pivot shaft clean and remove dirt from the fork.
There is no preventive maintenance for the electrical part.

WORKING TEMPERATURES RANGES FOR THE DIFFERENT MATERIALS

MATERIALS

EN 1.4404 (AISI-316L) -50 ºC…...150 ºC

PVC 0 ºC…...50 ºC

PP -20 ºC…...90 ºC
PTFE -20 ºC…...150 ºC

PVDF -20 ºC......150 ºC

The liquid working temperatures are given for an ambient temperature of 20ºC.

5. CHARACTERISTICS WITH REGARDS TO SAFETY

Equipment conforms to the following directives and norms.
97/23/CE Pressure Equipment
73/23/EEC Low voltage.
89/336/EEC Electromagnetic compatibility
94/9/EC (ATEX) Equipment & protective systems intended for use in potentially explosive

atmospheres

EN 50014 Electrical apparatus for potentially explosive atmospheres. General

requirements.

EN 50018 Electrical apparatus for potentially explosive atmospheres. Flameproof

enclosures “d”.

EN 50281-1-1 Electrical apparatus for use in the presence of combustible dust. Part 1-1

electrical apparatus protected by enclosures.

This instrument, since it belongs to Group II, is destinated to be used in areas where there is a
hazard of explosive atmospheres forming, except for mining installations.
Since it is category 2G it can be used in ambients where there is a probability of formation of
explosive atmospheres due to gases, vapours, mists or powder in suspension.

LIQUID TEMPERATURE

RANGE

!

IMPORTANT

• The respective national regulations, as well as the general engineering rules that apply to the
installation and operation of apparatus in explosive atmospheres must be observed .

• The end user is responsible for the safe use of this equipment.

• Modification or reparation of the flameproof housing is not permitted.

• The opening of the housing always shall be done without voltage. The housing is considered

to be closed when the lid is c ompletely screwed down and the grub screw in its locking
position.

• Only approved EExd IIC cable glands with the same thread as the housing should be used.

• The flameproof seals of the housing should kept greased to avoid corrosion, water ingress

and seizing. Clean rests of grease and corrosion, do not use sharp objects that can damage
the surface of the seal, and grease using a che mically and thermally stable grease with a
drip point > 200ºC.

3

• In applications with combustible dust, make sure that layers of more than 5 mm do not form.

• For the models with non-metallic float, the occurrence of electrostatic risks, must be taken

into account. They should not be used in locations where formation of electrostatic charge
can occur. During maintenance, these parts should always be cleaned using a damp cloth.

Important: The instrument can be installed in a tank in which the inside is considered to be zone
0, because the part that is inside the tank (the float mechanism) is a simple Non electrical
equipment without ignition sources.

MARKING

The marking of the equipment shows the
following characteristics:

LC40 … ADF

II 2 GD

0163

LOM 05ATEXxxxx

Narcís Monturiol 33

St. Just Desvern

08960

S.A.

N. EXAANNN
EEx d IIC T6
IP67 T 85º

Barcelona (Spain)

- Manufacturer

- Model

- EC marking

- Serial Number (year of
construction and number)

- Notified body

- Flameproof marking

- Address of manufacturer

WARRANTY
Tecfluid S.A. GUARANTEES ALL ITS PRODUCTS FOR A PERIOD OF 24 MONTHS, after

consignment, against all defects in materials and workmanship.
This warranty does not cover failures which can be imputed to misuse, use in an application different

to that specified in the order, the resu lt of service or modification by un-authorized perso ns, bad
handling or accident.

This warranty is limited to cover the repair or replacement defective parts which have not been
damaged by misuse.

This warranty is limited to the repair of the equipment and all further and eventually following
damages are not covered by this warranty.

Any consignment of equipment to our factory or distributor must be previously authorised. The
consignment should be done with the equipment well packed, clean of any liquids, grease or
hazardous materials. Tecfluid S.A. will not accept any responsibility for damage done during
transport.

Together with the equip ment, a note should be enclos ed indicating the failure observed, the name,
address and telephone number of the sender.

TECFLUID, S.A.
Narcís Monturiol, 33
E-08960 Sant Just Desvern
Tel. + 34 933 724 511 - Fax + 34 934 734 449
E-mail: [email protected]
Internet: www.tecfluid.com

The technical data in this pamphlet is subject to modification without notification, if the technical innovations in the product or
manufacturing processes so require.