Camlogic PFG-LP Instruction Manual

Installation and Maintenance Rules for:
PFG-LP - PFG-LP-C
STANDARD FEATURES
DESCRIPTION
OPERATION
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Use contact capacity:
Fig.1
Operating temperature:
Parts in contact with the products are made of stainless steel.
PFG-LP
PFG-LP float level gauges for liquids
Die-cast aluminium casing UNI 5076. IP65 protection.
PFG-LP-C
Maximum working pressure:
PFG-LP is a float level gauge used to detected the level of liquids in tanks.
Its operates by means of a float centered to the fixed support on the flange of the gauge. The float moves as the level
of the liquid increases and this movement is transmitted to a microswitch housed in the body of the gauge, causing
its electric contact to change status.
The instrument consist of a die-cast aluminium casing housing a precision microswitch and a rocker device controlled
by magnetic induction that activates the microswitch. This casing is enbloc with the flange that fixes the instrument
which in turn supports the float that tests the liquid.
The centering articulation of the float is protected by an elastic casing in
When it is not operating, the float assumes a negatively slanting position of
about 10° in relation to its horizontal axis.
As the level of the liquid rises, the float is influenced by the movement
and shifts from its initial position until it slants positively by about 10° in
relation to its horizontal axis ( Fig.1 ).
This movement is transmitted by magnetic induction by the magnet fixed to
the float, to the rocker device in the body of the instrument which activates
the microswitch.
There is no more or less protected passage between the liquid in the
tank and the interior part of the level gauge since magnetic induction is
transmitted to a lowered part of the stainless steel flange, thus guaranteing
100% impermeability. The microswitch is a switch contact type.
00956 19.10 - Rev. 00
SAFETY RULES
articulation itself, since this could hamper its movement.
All parts in contact with the liquid ( flange, articulation and float ) are made
of stainless steel to prevent problems if the treated liquid is aggressive.
Neoprene which prevents sticky substances from accumulating within the
All the appropriate safety precautions must be taken when electrically operated equipment is used, in order to reduce
the risk of fire outbreaks, electric shock and injuries to persons.
- Keep the work zone clean and orderly. Accidents are more likely to occur in untidy areas and environments.
- Before beginning work, make sure that the level gauge is in a perfect condition. Damaged or broken parts must be
repaired or replaced by competent personnel authorized by the Manufacturer.
- All verifications, inspections, cleaning and maintenance operations, part changes and replacement must be carried
out with the level gauge disconnected.
- It is absolutely forbidden for children, unauthorized and/or inexpert persons to touch or use the level gauge.
- Make sure that the earthing is efficiently connected when the instrument is installed.
- Periodically check to be sure that the cable is in a perfect condition and replace it if is damaged. This operation must
only be carried out by competent and authorized persons. Only use extension cables of the permitted type and marked.
- Protect the cable against high temperatures, lubricants and sharp edges. Do not twist or knot the cable.
- Do not allow children or unauthorized persons to touch the cable.
The float level gauge PFG-LP is made in compliance with the regulations in
force in the European Union and specifically with:
INSTALLATION
The gauge is mounted on the external wall of the tank by means of a counterflange sized as shown in the drawing
( see REFERENCE FIGURES ).
The horizontal axis of the float must be perpendicular to the tank wall, thus parallel to the surface of the still liquid.
Equipped with a float with a curved stem, gauge PFG-LP-C can be mounted on tank walls slanting 45° at most,
since the curved stem achieves optimum operating conditions just as through the float was parallel to the surface
of the liquid ( Fig.2 ).
10 A at 250 V.AC.
from -20 to +120 °C.
25 bar.
standard.
with curved float.
Serial Number: 00.112.0000
Via dell'Industria 12 - 42025 CAVRIAGO RE - Italy
Production Year 0000
FLOAT LEVEL GAUGE
II 2GD Ex d IIB T4 Ex tD A21 IP65 T135°C - TÜV 08 ATEX 362388 X
Ex d IIB T4 Gb - Ex tD A21 IIIC T135°C Db Ip65 - IECEx QAR TUN 08.0033
0948
PFG-LP
Ambient temperature range -10 to +100°C
Max. temperature inside storage bin 100°C
R
S.n.c. di Guazzetti Giovanni & C.
COSTRUZIONI MECCANICHE ELETTRICHE
Via dell'Industria 12 - 12/A - 42025 CAVRIAGO - RE - Italy
Tel.: [phone]
www.camlogic.it e-mail: [email protected]

00956 19.10 - Rev. 00SGC2008
MAINTENANCE
ELECTRICAL WIRING
WARRANTY
Fig.2
Fig.3
Instructions Manual No. 00956 19.10 - Rev. 00
The conductors forming the signal carrying cable connected to the microswitch
( Fig.3 ) must have an adequate cross-section so that the current density,
in each conductor, is no higher than 4 A/mm². One of these is used only
The cross-section of the conductors must also be adequate in relation to the
the values prescribed by the regulations on the subject.
diameter for the fair-leads used ( not supplied ) to ensure a perfect seal of
the cable clamp on the signal carrying cable. Use exclusively cable entries
CAUTION: In the terminal board compartment, the connection for Faston type terminal whose position is marked
conductor ( green only for the USA ) of the signal carrying cable must be
connected to this terminal. The ground connection of the float level gauge,
through the yellow-green conductor, is compulsory.
CAMLOGIC float level gauges for liquids need no
routine maintenance. Take care the external cleaning
CAMLOGIC S.n.c., in addition to the terms of the
supply contract, guarantees its products for a
period of twenty-four ( 24 ) months from the date
of shipment.
This warranty is expressed only in the repair or
replacement free of charge of parts that, after
careful examination by the Manufacturer, turn out
to be difective.
Warranty, excluding all liability for direct or indirect
damage, is considered to be restricted to only
defects in materials and has no effect if the parts
returned turn out to have been anyhow dismantled,
tampered with or repaired by anyone other than
the Manufacturer.
Warranty likewise excludes damage deriving from
negligence, carelessness, bad or improper use of
the level gauge, or from bad handling by the
operator and faulty installation.
Warranty is moreover forfeit if non-genuine spare
parts have been used. A returned level gauge, even
if under warranty, must be shipped carriage free.
All the information contained in this manual is confidential and no
part of it may be disclosed without written authorization from CAMLOGIC S.n.c.
This manual, even after the sale of level gauge, is lent and remains the property of the Manufacturer.
for the earthing of the level gauge.
length of the cable used to avoid a drop in voltage along the cable over
It is likewise reccomended to use flexible cables with an adequate outside
by the ground symbol on the printed circuit ( Fig.3 ) is used for the earthing the level gauge. The yellow-green
On the external level gauge casing side, placed side by side to the cable
inlet, a second connection point is present for the external ground connection
executable with a screw M5 and an eyelet cable terminal.
-The external earthing has to be carried out by the installator.
-The equipment has to be protected against impact and electrostatic inside
-The user has to protect the equipment circuits with fuses against short circuit.
-The max. surface temperature is without dust and not safety distance.
the tank.
UE DECLARATION OF CONFORMITY
The manufacturer CAMLOGIC Snc declares under its own responsability that the product PFG-LP answers to the requisites
of the European Directive 2014/34/EU in consideration of the standards : IEC EN 60079-0 IEC EN 60079-1 IEC EN 61241-0 IEC EN 61241-1.
Marking: II 2GD Ex d IIB T4 Ex tD A21 IP65 T135 °C Marking IECEx: Ex d IIB T4 Gb - Ex tD A21 IIIC T135 °C Db IP65.
Notified corporate body that releases the examination TÜV NORD. Crt. number: TÜV 08 ATEX 362388 X - IECEx QAR TUN 08.0033.
Corporate body entrusted of the periodic overseeing TÜV ITALIA.
The permitted range ambient temperature is
REFERENCE FIGURES
ø 110
ø 150
4 holes ø 18 to 90° DN40 COUNTERFLANGE
ø 66
45°
45°
45°
45°
ø 150
170 ~
10°
10°
35° ~
Float ø 52 x150
18 60
137 255 ~
392 ~
47
M16 x 1.5
PFG-LP-C
Outside casing ground
10°
10°
ø 52
47
M16 x 1.5
18 60
137
45 150
255
392
3
ø 66 PFG-LP
Use Faston cable terminals ( 6.3 x 0.8 mm. ) to connect the microswitch terminals and the ground connection.
certified ATEX Exd IP65 or IECEx Exd IP65 M16x1.5.
of the level gauge, the dust accumulation doesn't
have to exceed a thickness of 5 mm.
Inside casing ground
1- N.o. contact
3- N.C. contact
2- Com. contact
123
Faston
6.3x0.8mm.