Labkotec OilSET-1000 User manual

Labkotec Oy
Myllyhaantie 6
FI-33960 PIRKKALA
FINLAND
Tel: [phone]
Fax: [phone].2019
Internet: www.labkotec.fi D15492AE-2
1/13
Copyright © 2019 Labkotec Oy We reserve the right for changes without notice
OilSET-1000
Oil Separator Alarm Device with SET/DM3AL sensor
Installation and Operating Instructions

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 2/13 We reserve the right for changes without notice
TABLE OF CONTENTS
1GENERAL............................................................................................................ 3
2INSTALLATION ................................................................................................... 4
2.1 OilSET-1000 control unit.............................................................................. 4
2.2 SET/DM3AL sensor ..................................................................................... 5
2.3 Cable joint .................................................................................................... 5
3OPERATION AND SETTINGS............................................................................ 6
3.1 Operation ..................................................................................................... 6
3.2 Factory settings............................................................................................ 7
4TROUBLE-SHOOTING ....................................................................................... 8
5REPAIR AND SERVICE...................................................................................... 9
SAFETY INSTRUCTIONS........................................................................................ 9
6TECHNICAL DATA............................................................................................ 10
DECLARATION OF CONFORMITY....................................................................... 11
DECLARATION OF CONFORMITY....................................................................... 12
DECLARATION OF CONFORMITY....................................................................... 13
SYMBOLS
Warning / Attention
Pay special attention to installations at explosive atmospheres
Device is protected by double or reinforced insulation

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 3/13 We reserve the right for changes without notice
1 GENERAL
OilSET-1000 is an alarm device for monitoring the thickness of the oil
layer accumulating in an oil separator. Depending on the order, the
delivery consists of OilSET-1000 control unit, SET/DM3AL sensor and
a cable joint.
Figure 1. Oil separator alarm system
SET/DM3AL sensor is installed into the light liquid storage chamber and
gives an alarm when the chamber is filled to a pre-determined degree.
The sensor is normally immersed in water.
The function is based on the measurement of the electrical conductivity
of the surrounding liquid –water conducts electricity much better than
oil.
Oil separator is regarded as potentially explosive (Ex) area.
SET/DM3AL sensor can be installed in a zone 0, 1 or 2 potentially
explosive area but the control unit must be mounted in a safe area.
The LED indicators, push buttons and interfaces of the OilSET-1000
control unit are described in figure 2.
Figure 2. OilSET-1000 control unit - features

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 4/13 We reserve the right for changes without notice
2 INSTALLATION
2.1 OilSET-1000 control unit
OilSET-1000 control unit can be wall-mounted. The mounting holes are
located in the base plate of the enclosure, beneath the mounting holes
of the front cover.
The connectors of the external conductors are isolated by separating
plates. The plates must not be removed. The plate covering the
connectors must be installed back after executing cable connections.
The cover of the enclosure must be tightened so, that the edges touch
the base frame. Only then do the push buttons function properly and
the enclosure is tight.
Before installation, please read the safety instructions in chapter 6 !
Figure 3. OilSET-1000 alarm device installation.

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 5/13 We reserve the right for changes without notice
2.2 SET/DM3AL sensor
SET/DM3AL sensor should be installed as described in figure 3.
The sensor gives an alarm when the upper electrode is in oil.
Please check the correct installation depth also from the instructions of
the oil separator.
2.3 Cable joint
Fig. 4. Cable joint
Connections of the sensor cable inside the cable joint are explained in
figure 3. Cable shields and possible excess wires need to be connected
to the same point in galvanic contact.
Please make sure, that the sensor and cable between OilSET-1000
control unit and the sensor do not exceed the maximum allowed
electrical parameters –see chapter 7 Technical data.
IP rating of the cable joint is IP68. Make sure, that the cable joint is
closed properly.
If the sensor cable must be extended and there is a need for
equipotential grounding, it should be done with the junction box LJB2.
The cabling between the OilSET-1000 control unit and the junction box
should be done with a shielded twisted pair instrument cable.
Fig. 5. Cable installation example
Fig. 6. Installation accessories

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 6/13 We reserve the right for changes without notice
3 OPERATION AND SETTINGS
The OilSET-1000 alarm device is initialized at the factory.
The operation of the alarm device should be checked always after the
installation.
Functionality test
1. Immerse the sensor into water. The device should be in normal mode.
2. Lift the sensor up in air or oil. An Oil alarm should be generated (see
chapter 3.1 for more detailed description).
3. Immerse the sensor back into water. The alarm should go off after a
delay of 5 sec. Clean up the sensor if necessary before placing it back
into the oil separator.
A more detailed description of the operation is provided in chapter 3.1.
If the operation is not as described here, check the factory settings
(chapter 3.2.) or contact a representative of the manufacturer.
3.1 Operation
The operation of a factory-initialized OilSET-1000 is described in this
chapter.
Normal mode –no alarms
SET/DM3AL sensor is totally immersed in water.
Mains LED indicator is on.
Other LED indicators are off.
Relays 1 and 2 are energized.
Oil alarm
SET/DM3AL sensor is immersed in oil. (The sensor gives an alarm when
the upper electrode is in oil.)
Mains LED indicator is on.
Oil Alarm LED indicator is on.
Buzzer on after 5 sec delay.
Relays de-energize after 5 sec delay.
(Note. The same alarm takes place when SET/DM3AL sensor is in the
air.)
After removal of an alarm, the Oil Alarm LED indicator and buzzer will be
off, and relays will be energized after a fixed delay of 5 sec.
Fault alarm
Sensor cable break, short circuit or a broken sensor, i.e. too low or too
high sensor signal current.
Mains LED indicator is on.
Sensor circuit Fault LED indicator is on after 5 sec delay.
Buzzer is on after 5 sec delay.
The relays de-energize after 5 sec delay.
Reset of an alarm
When pressing the Reset push button.
Buzzer will go off.
Relay 1 energizes.
Relay 2 will stay de-energized until the actual alarm or fault is off.
TEST FUNCTION
Test function provides an artificial alarm, which can be used to test the
function of the OilSET-1000 alarm device and the function of other
equipment, which are connected to OilSET-1000 via its relays.
Attention! Before pressing the Test button, make sure that the change
of relay status does not cause hazards elsewhere!
Normal situation
When pressing the Test push button:

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 7/13 We reserve the right for changes without notice
Oil Alarm and Fault LED indicators are immediately on.
Buzzer is immediately on.
Relays de-energize after 2 sec of continuous pressing.
When the Test push button is released:
LED indicators and buzzer go immediately off.
Relays energize immediately.
Alarm on
When pressing the Test push button:
Fault LED indicator is immediately on.
Oil Alarm LED indicator remains on.
Buzzer remains on. If it has been reset earlier, it will return to be on.
If relay 1 was already reset, it will de-energize again after 2 sec. of
continuous pressing.
Test will not affect relay 2, because it is already in alarm status.
When the Test push button is released:
The device returns without delay to the preceding status.
Fault alarm on
When pressing the Test push button:
The device does not react to the test at all.
3.2 Factory settings
If the operation of OilSET-1000 is not as described in the previous
chapter, check that the device settings are as in figure 7. Change the
settings according to the following instructions if needed.
The following tasks must only be executed by a person with proper
education and knowledge of Ex-i devices.
We recommend, that when altering the settings the mains voltage is off
or the device is initialized before the installation is executed.
Figure 7. Factory settings
The settings are made with switches (MODE and DELAY) and
potentiometer (SENSITIVITY) located in the upper printed circuit board,
and the jumper located in the lower board (figure 7). In figure 7, the
switches are as set in the factory.
Switch S2 is used to set the operational delay of the control unit. When the switch is in low
position, relays operate and buzzer is on after 5 seconds after the level has reached the trigger
level, and if the level still remains on the same side of the trigger level.
When the switch is in high position, the delay is 30 seconds.
Delays are operational in both directions (energizing, de-energizing). Alarm LED follows the
sensor current value and trigger level without delay. Fault alarm takes place after a fixed delay
of 5 sec.

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 8/13 We reserve the right for changes without notice
4 TROUBLE-SHOOTING
Problem:
MAINS LED indicator is off
Possible reason:
Supply voltage is too low or the fuse is blown. Transformer or MAINS LED
indicator is faulty.
To do:
1. Check if the two pole mains switch is off.
2. Check the fuse.
3. Measure the voltage between poles N and L1. It should be 230 VAC + 10 %.
Problem:
No alarm when sensor in oil or air, or the alarm will not go off
Possible reason:
The SENSITIVITY setting is wrong in the control unit (see figure 7), or sensor is
dirty.
To do:
1. Clean-up the sensor and lift it up in the air or immerse it into oil.
2. Turn the SENSITIVITY potentiometer slowly anticlockwise until the sensor gives
an alarm.
3. Immerse the sensor into water and wait until the alarm goes off. If the alarm
does not go off, turn the potentiometer slowly clockwise until the alarm goes off.
4. Lift the sensor up in the air or oil. The sensor should give an alarm again.
Problem:
FAULT LED indicator is on
Possible reason:
Current in sensor circuit too low (cable break) or too high (cable in short circuit).
The sensor might also be broken.
To do:
1. Make sure, that the sensor cable has been connected correctly to the OilSET-
1000 control unit. See sensor specific instructions.
2. Measure the voltage separately between the poles 10 and 11. The voltages
should be between 10,3….11,8 V.
3. If the voltage is correct, measure the sensor current. Do as follows:
3.1 Disconnect sensor’s [+] wire from sensor connector (pole 10).
3.2 Measure short circuit current between [+] and [-] poles.
3.3 Connect mA-meter as in figure 8.
Make a comparison to the values in Table 1.
3.4 Connect the wire back to the connector.
If the problem can not be solved with the above instructions, please contact
Labkotec Oy’s local distributor or Labkotec Oy’s service.
Attention! If the sensor is located in an explosive atmosphere, the multimeter must
be Exi-approved!
SET/DM3AL, channel 1
Poles 10 [+] ja 11 [-]
Shortcircuit
20 mA –24 mA
Sensor in the air
9 –11 mA
Sensor in oil (r 2)
9 –11 mA
Sensor in the water
3 –4 mA
Factory setting for
alarm point
approx. 6.5 mA
Figure 8. Sensor current measurement Table 1. Sensor currents

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 9/13 We reserve the right for changes without notice
5 REPAIR AND SERVICE
The sensor should be cleaned and the operation should also be tested
when emptying the oil storage chamber or at least once every six
months. The easiest way to check the operation is to lift the sensor up
in the air and to put it back to the separator. The operation is described
in chapter 3.
For cleaning, a mild detergent (e.g. washing-up liquid) and a scrubbing
brush can be used.
The mains fuse (marked 125 mAT) can be changed to another glass
tube fuse 5 x 20 mm / 125 mAT complying IEC/EN 60127-2/3. Any other
repair and service works on the device may be carried out only by a
person who has received training in Ex-i devices and is authorized by
the manufacturer.
In case of queries, please contact Labkotec Oy’s service.
SAFETY INSTRUCTIONS
OilSET-1000 control unit must not be installed in potentially explosive
atmosphere. Sensors connected to it may be installed in zone 0, 1 or 2
potentially explosive atmospheres.
In case of installations in explosive atmospheres the national
requirements and relevant standards as IEC/EN 60079-25 and/or
IEC/EN 60079-14 must be taken into account.
Warning! If the cabling is voltage-tested, the sensor must be
disconnected.
If electrostatic discharges can cause hazards in the operating
environment, the device must be connected into equipotential ground
according to requirements with regards to explosive atmospheres.
Equipotential grounding is made by connecting all conductive parts into
same potential e.g. at the cable junction box. Equipotential ground must
be earthed.
The device does not include a mains switch. A two pole mains switch
(250 VAC 1 A), which isolates both lines (L1, N) must be installed in the
main power supply lines in the vicinity of the unit. This switch facilitates
maintenance and service operations and it has to be marked to identify
the unit.
When executing service, inspection and repair in explosive atmosphere,
the rules in standards IEC/EN 60079-17 and IEC/EN 60079-19 about
instructions of Ex-devices must be obeyed.

OilSET-1000 Oil Separator Alarm Device D15492AE-2
Installation and Operating Instructions
Copyright © 2019 Labkotec Oy 10/13 We reserve the right for changes without notice
6 TECHNICAL DATA
OilSET-1000 control unit
Dimensions
175 mm x 125 mm x 75 mm (L x H x D)
Enclosure
IP 65, material polycarbonate
Operation temperature
-25 ºC…+50 ºC
Supply voltage
230 VAC ± 10 %, 50/60 Hz
Fuse 5 x 20 mm 125 mAT (IEC/EN
60127-2/3)
The device is not equipped with a mains
switch
Power consumption
2 VA
Sensors
One SET sensor (SET/DM3AL)
Max. resistance of the
current loop between the
control unit and a sensor
75 Ω.
Relay outputs
Two potential-free relay outputs
250 V, 5 A, 100 VA
Operational delay 5 sec or 30 sec.
Relays de-energize at trigger point.
Operation mode selectable for increasing
or decreasing level.
Electrical safety
IEC/EN 61010-1, Class II , CAT II /
III
Insulation level
Sensor / Mains supply
voltage
375V (IEC/EN 60079-11)
EMC Emission
Immunity
IEC/EN 61000-6-3
IEC/EN 61000-6-2
Ex-classification
Special conditions (X)
ATEX
IECEx
II (1) G [Ex ia] IIC
(Ta = -25 C…+50 C)
VTT 04 ATEX 031X
IECEx VTT 10.0003X
Electrical parameters
Characteristic curve of the
output voltage is trapezoidal
See table 2.
Uo = 14,7 V Io = 55 mA
Po = 297 mW R = 404 Ω
Manufacturing year:
Please see the serial number
on the type plate
xxx x xxxxx xx YY x
where YY = manufacturing year
(e.g. 19 = 2019)
Due to non-linear characteristics of the sensor voltage, the interaction of
both, capacitance and inductance, must be taken into account. The
table below indicates the connecting values in explosion groups IIC and
IIB. In explosion group IIA the values of the group IIB can be applied.
Max. permissible value
Combined Co and Lo
Co
Lo
Co
Lo
II C
608nF
10 mH
568nF
458 nF
388 nF
328 nF
258 nF
0,15 mH
0,5 mH
1,0 mH
2,0 mH
5,0 mH
II B
3,84μF
30 mH
3,5 µF
3,1 µF
2,4 µF
1,9 µF
1,6 µF
0,15 mH
0,5 mH
1,0 mH
2,0 mH
5,0 mH
Lo/Ro= 116,5 µH/Ω (IIC) and 466 µH/Ω (IIB)
Table 2. OilSET-1000 electrical parameters
SET/DM3AL sensor
Principle of operation
Measurement of conductivity
Signal
Supply voltage
Analog 3 mA / 10 mA
8 V…16 V (DC)
Material
PVC (black); AISI 316, NBR, PA
IP-classification
IP68
Temperature
Operation: 0 ºC…+60 ºC
Safety: -30 ºC …+60 ºC
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.
EMC Emission
Immunity
IEC/EN 61000-6-3
IEC/EN 61000-6-2
Ex-classification
Special conditions (X)
ATEX
IECEx
II 1 G Ex ia IIA T5 Ga
(Ta -30 ºC …+60 ºC)
–The risk of electrostatic charge must
be observed!
EESF 19 ATEX 004X
IECEx EESF 19.0004X
Electrical parameters
Ui= 16 V Ii= 80 mA
Pi= 400 mW Ci= 3500 pF
Li = 85 μH
Manufacturing year:
Please see the serial
number on the type plate
x xxx x xxxxx xx YY x
where YY = manufacturing year
(e.g. 19 = 2019)
Figure 9. Dimensional drawing of SET/DM3AL sensor

DECLARATION OF CONFORMITY

DECLARATION OF CONFORMITY

DECLARATION OF CONFORMITY