Labkotec SET/V Specification sheet

Labkotec Oy
Myllyhaantie 6
FI-33960 PIRKKALA
Tel. [phone]
Fax [phone]
Internet: www.labkotec.fi 18.5.2010
D27093_e
We reserve the right to any changes. Copyright © 2010, Labkotec Oy
1(4)
SET/V
High level sensor
OPERATION AND INSTALLATION MANUAL

SET/V D27093_e
Operation and installation manual
We reserve the right to any changes. Copyright © 2010, Labkotec Oy
2(4)
SYMBOLS
To be considered in installations in
potentially explosive atmospheres.
Warning/Attention
1. GENERAL
SET/V is a level switch sensor that is to be
connected to analogical and digital SET control
units of Labkotec. Operating principle of the sensor
is based on the measurement of the vibration of
the sensor.
Sensor is suitable to be used as a high level alarm
for liquid tanks, for example. Typical applications of
SET/V sensor include oil and grease separators.
The SET/V has been certified according to the
ATEX Directive (94/9/EC) in equipment category 1
and it can be installed in potentially explosive
atmospheres in zoned areas 0, 1, and 2.
Figure 1. Dimensional drawing of the SET/V
sensor
Figure 2. Application: high level alarm for an oil
separator
2. TECHNICAL DATA
Control unit LevelSET S and SET control
units by Labkotec Oy
Signal
Operating voltage
Digital and
analogical 7mA/13mA
8V…16V (DC)
Cable Shielded oil-proof cable 2 x 0.75
mm2. Standard length 5 m. Other
lengths optional. The max. length
of the fixed cable is 15 m. Can be
extended with a shielded cable.
The recommended maximum
cable loop resistance is 75 Ω.
Materials PA, PVC, aluminum, NBR
Temperature
range
Operation: 0…+60°C
Safety: -30…+60°C
EMC
Emissions EN 61000-6-3
Immunity EN 61000-6-2
IP-classification IP68
Ex-classification II 1 G Ex ia IIB T5 Ga
VTT 09 ATEX 025X
IECEx VTT 10.0006X
Ui = 16 V
Pi = 400 mW
Ii = 80 mA
Ci = 3500 pF Li = 85 μH
Operating
principle
Vibration
Manufacturing
year:
Please see the
serial number on
the type plate.
xxx x xxxxx xx YY x
where YY = manufacturing year
(e.g. 10 = 2010)
The sensor may be installed in potentially
explosive atmospheres of zones 0, 1, and 2 with
the following special conditions (X):
– The ambient temperature is –30…+60°C.
– The risk of electrostatic charge must be observed!
Standards to be considered in the installation:
IEC/EN 60079-25 Intrinsically-safe electrical systems
"i", and/or IEC/EN 60079-14 Electrical installations in
hazardous areas. If the cabling is voltage-tested, the
sensor must be detached from the system.

SET/V D27093_e
Operation and installation manual
We reserve the right to any changes. Copyright © 2010, Labkotec Oy
3(4)
3. CONNECTIONS AND INSTALLATION
Figure 3. Connection example 1
Figure 4. Connection example 2
The SET/V sensor is equipped with a shielded 2-
wire cable. The numbered wires 1 and 2 of the
cable are connected to the corresponding
connectors (1 = +, 2 = – ) in the control unit.
Always check the connections from the installation
and operation manual of the control unit as well.
In the example shown in figure 3, an LJB2-78-83
junction box has been used to connect the cabling
to the equipotential bonding.
In figure 4, equipotential bonding is not available.
The shield is connected to the appropriate
connector in the supply device.
In these kinds of arrangements, it must be
ensured that the electrostatic charges do not
cause a hazard. Make sure in the installation that
the device and cabling are not close to a strong
current or other installations and that they are not
exposed to strong stream flows, mechanical
abrasions, or impacts.
The cable may be shortened or extended with a
junction box, if necessary.
The sensor is installed by hanging it from its cable
at a suitable height so that the switch data is
received as the surface level reaches the sensing
element.
The example in figure 5 shows an oil separator
application.
4. OPERATION
This chapter provides a general description of the
operation of the alarm in different situations. For a
more detailed description, please refer to the
manual of the control unit in use.
Write down the 5 digit address from the
Code field of the sensor type plate in the
installation phase for later use. This address is
required if the sensor has to be re-connected to
the LevelSET S system or another control unit.
Normal
mode The SET/V high level sensor is entirely in
the air.
The alarm indicator lights are off.
The relays are energized.
Tank full The sensing element of the SET/V sensor
is immersed in liquid.
The Overfill indicator is on.
The buzzer sounds
The relays are de-energized.
Once the alarm is off, the alarm indicator
lights switch off, the buzzer stops, and the
relays are energized.

SET/V D27093_e
Operation and installation manual
We reserve the right to any changes. Copyright © 2010, Labkotec Oy
4(4)
5. OPERATION TEST
Always check the correct operation of the alarm
after the installation and after making the
connections. You should also check the operation
every time the separator is emptied or at least
once a year.
Testing the
operation 1. The sensor is in the air. The device should be in normal mode
(see chapter 4).
2. Lower the sensing element of the
sensor into the water or oil. The
“Tank full” alarm should be issued
(see chapter 4).
3. Lift the sensor in the air. The
alarm should stop after a while.
Clean the sensor before installing
it into the separator.
If the sensor does not function as described, check
the device settings from the control unit manual or
contact the representative of the manufacturer.
6. SERVICE AND REPAIR
The sensor must be cleaned and tested when
emptying the storage chamber and in connection
with the annual maintenance. A mild detergent
(e.g. washing-up liquid) and a scrubbing brush can
be used for cleaning the sensor, if necessary.
During maintenance procedures (such as
servicing the oil/fuel separator systems), the
sensor should not be lifted out of the
separator tank or installed back until there is
water in the tank.
The instructions concerning the inspection
and maintenance of Ex equipment contained
in standards IEC/EN 60079-17 and IEC/EN
60079-19 should be observed when
executing service, inspection, or repair
procedures.
Fault
alarm The sensor is broken, there is a sensor
cable break or a short circuit, or the
sensor signal current is not recognized
(digital system).
The sensor circuit Fault indicator is on.
The buzzer sounds
The relays are de-energized.
Fi
g
ure 5. Installation exam
p
le in an oil se
p
arator.