fafnir SEPARIX-Control CT Guide

Technical Documentation
FAFNIR GmbH •Schnackenburgallee 149 c •22525 Hamburg •T.: +49 / 40 / 39 82 07-0 •F.: +49 / 40 / 39 06 339
SEPARIX
SEPARIX-Control CT,
SEPARIX-C L Plus and SEPARIX-T L Plus
Edition: 2019-01
Version: 6
Art. no.: 207105

I Contents
Table of contents
1Properties of the SEPARIX system............................................................................... 1
2Safety instructions ........................................................................................................... 1
3The SEPARIX sensors.......................................................................................................3
3.1 Design and function ….............................................................................................................. 3
3.1.1 … of the interface sensor SEPARIX-C L Plus...................................................................... 3
3.1.2 … of the high-level sensor SEPARIX-T L Plus.................................................................... 4
3.2 Installation …................................................................................................................................ 5
3.2.1 … of the interface sensor SEPARIX-C L Plus...................................................................... 5
3.2.2 … of the high-level sensor SEPARIX-T L Plus.................................................................... 7
3.3 Maintenance and cleaning …................................................................................................. 9
3.3.1 … of the interface sensor SEPARIX-C L Plus...................................................................... 9
3.3.2 … of the high-level sensor SEPARIX-T L Plus.................................................................... 9
3.4 Technical Data ...........................................................................................................................10
4SEPARIX-Control CT measuring transducer .............................................................11
4.1 Design and function................................................................................................................11
4.1.1 LEDs...............................................................................................................................................12
4.1.2 Buzzer ...........................................................................................................................................12
4.1.3 Membrane buttons..................................................................................................................12
4.2 Configuration.............................................................................................................................13
4.2.1 Activation of SEPARIX-C ........................................................................................................14
4.2.2 Activation of SEPARIX-T.........................................................................................................14
4.2.3 Relay energised.........................................................................................................................14
4.2.4 Relay acknowledgeable..........................................................................................................14
4.2.5 Alarm delay.................................................................................................................................15
4.2.6 Acknowledge button...............................................................................................................15
4.2.7 Test button .................................................................................................................................15
4.2.8 Alarm buzzer ..............................................................................................................................15
4.3 Commissioning..........................................................................................................................15
4.4 Faults and alarms......................................................................................................................17

Contents II
4.4.1 Overview of fault and alarm causes .................................................................................. 17
4.4.2 Acknowledgement of faults or alarms ............................................................................. 17
4.5 Technical data ........................................................................................................................... 18
5Function test....................................................................................................................19
6List of figures..................................................................................................................20
7List of tables....................................................................................................................20
8Annex.................................................................................................................................21
8.1 SEPARIX-C ….............................................................................................................................. 21
8.1.1 EC – Declaration of Conformity .......................................................................................... 21
8.1.2 EU-Type Examination Certificate........................................................................................ 22
8.1.3 Instructions interface sensor SEPARIX-C …..................................................................... 24
8.2 SEPARIX-T …............................................................................................................................... 26
8.2.1 EC – Declaration of Conformity .......................................................................................... 26
8.2.2 EC-Type Examination Certificate ........................................................................................ 27
8.2.3 Instructions high-level sensor SEPARIX-T …................................................................... 30
8.3 SEPARIX-Control CT ................................................................................................................ 33
8.3.1 EC-Type Examination Certificate ........................................................................................ 33
8.3.2 Instructions measuring transducer SEPARIX-Control CT........................................... 36
© Copyright:
Reproduction and translation are permitted only with the written consent of the FAFNIR GmbH. The FAFNIR GmbH
reserves the right to make product alterations without prior notice.

Page 1/37 SEPARIX-C/-T and SEPARIX-Control CT
1Properties of the SEPARIX system
The SEPARIX system is a warning system that, depending on the version, is able to monitor
both the thickness of the oil or light liquid layer in a light liquid separator as well as the level
of this fluid. The system consists of the following components:
–Interface sensor SEPARIX-C L Plus
–High-level sensor SEPARIX-T L Plus
–SEPARIX-Control CT measuring transducer
The measuring transducer serves as power supply and signal processing of the sensors.
The sensors transmit a signal to the connected measuring transducer whenever the oil /
light liquid layer exceeds a defined thickness (interface sensor) or whenever the liquid level
in the separator rises above an impermissible threshold (high-level sensor). The measuring
transducer then generates alarms so that appropriate measures can be taken to stop con-
taminants from being discharged into the sewage system.
Faults and alarms are signalled visually by LEDs and audibly by a buzzer. The measuring
transducer also supports the connection of external alarm transmitters.
2Safety instructions
SEPARIX serves for monitoring the light liquid layer and/or the liquid level in light liquid
separators. Use the system exclusively for this purpose. The manufacturer accepts no liabil-
ity for any form of damage resulting from improper use.
The interface sensors, high-level sensors and measuring transducers have been developed,
manufactured and tested in accordance with the latest good engineering practices and
generally accepted safety standards. Nevertheless, hazards may arise from their use. For
this reason, the following safety instructions must be observed:
•Do not change or modify the system or add any equipment without the prior con-
sent of the manufacturer.
•The installation and maintenance of the measuring transducer and the sensors must
be carried out only by expert personnel. Specialised knowledge must be acquired
by regular training.
•All installation and maintenance work, with the exception of functional testing, must
be carried out with the power disconnected.
•Installers and service technicians must comply with all applicable safety regulations.
This also applies to any local safety and accident prevention regulations which are
not stated in this user guide.

SEPARIX-C/-T and SEPARIX-Control CT Page 2/37
•The sensors are suitable for installation in Ex Zone 0. Observe all applicable rules
and regulations for potentially explosive atmospheres.
•The measuring transducer must be installed outside the Ex Zone.
•The warning system must be tested at the intervals specified by local regulations.
•To avoid the risk of electrostatic charge, the SEPARIX-C L Plus interface sensors are
not permitted to be used in heavy-flowing, non-conducting fluids (e.g. in pipework
or stirred tanks).
•Also for cleaning the SEPARIX-C L Plus interface sensors the risk of electrostatic
charge must be prevented by the using damp cloths.
•The SEPARIX-C L Plus interface sensor and the SEPARIX-T L Plus high-level sensor
are not permitted to be used in aggressive media.
The safety instructions in this user guide are marked as follows:
If these safety instructions are not observed, it may result in the risk of ac-
cident or damage to the SEPARIX system.
Useful tips and information in this user guide you should observe, appear
in italics and are identified by this symbol.

Page 3/37 SEPARIX-C/-T and SEPARIX-Control CT
3The SEPARIX sensors
3.1 Design and function …
3.1.1 … of the interface sensor SEPARIX-C L Plus
The SEPARIX-C L Plus interface sensors, in conjunction with the SEPARIX-Control CT meas-
uring transducer, form an automatic warning device for light liquid separators. The warning
system responds to a change in the thickness of the oil / light liquid layer. It generates an
alarm signal before the automatic closure device shuts off the outlet of the separator due
to a high oil / light liquid level.
The SEPARIX-C L Plus is not permitted to be used in aggressive media.
The sensor works according to the capacitive measuring principle: To detect the interface,
it uses the difference between the relative dielectric constant of water and of light liquids,
e.g. oil. The measurement on the SEPARIX-C L Plus is made over the entire surface of the
6 cm long measuring range. This helps to achieve
significant insensitivity to contaminations that could
otherwise trigger false alarms.
The typical switch point is approximately 40 mm
above the sensor tip. Depending on the degree
of contamination, it may shift 10–20 mm upwards
(within the safe zone). In the event of heavy con-
tamination, which, due to the nature of operation,
cannot always be avoided even with regular mainte-
nance, no false alarm is triggered (without the
presence of a light liquid layer). Instead, the alarm
is triggered at a slightly reduced layer thickness.
The SEPARIX-Control CT measuring transducer
powers the sensors and evaluates the sensor sig-
nals.
Switch point
40
92
195
∅
28
∅
24
Figure
1: SEPARIX-C L Plus, dimensions

SEPARIX-C/-T and SEPARIX-Control CT Page 4/37
3.1.2 … of the high-level sensor SEPARIX-T L Plus
The SEPARIX-C L Plus high-level sensor, in conjunction with the SEPARIX-Control CT meas-
uring transducer, forms an automatic warning device for light liquid separators. The warning
system responds to the level of liquid in the separator (whether oil, light liquid or water). It
generates an alarm signal whenever the liquid level in the separator rises above an imper-
missible threshold, e.g. due to reverse flow from the separator outlet, or because the
automatic closure device has shut off the outlet of the separator due to a high oil / light
liquid layer.
The SEPARIX-T L Plus is not permitted to be used in aggressive media.
The sensors work without moving parts according to the thermal measuring principle,
based on the different thermal conductivity of gases and liquids:
A PTC resistor in the sensor tip is heated up by the measuring transducer, which increases
the resistance of the PTC resistor if surrounded by gas (e.g. air). As soon as the sensor tip
comes into contact with liquid, the resistance
of the PTC resistor drops because liquids have
a significantly higher thermal conductivity than
gases and therefore cool the sensor down.
The measuring transducer detects this change
in resistance whether it is caused by light liquid
or water and triggers an alarm.
To avoid damage and disturbances caused by
splash water, the sensor tip is protected by the
sensor housing, which is slotted and open at
the bottom end. The switch point is 35 mm
above the lower edge of the sensor housing
and is marked by a circular groove on the sen-
sor housing.
The SEPARIX-Control CT measuring transducer
powers the sensors and evaluates the sensor
signals.
After turning on the SEPARIX-
Control CT, the high-level sensor must heat
up first before it is ready for operation.
According to the ambient temperature this
heating phase can last up to 2 minutes.
10
250
ca. 278
16
Figure
2: SEPARIX-T L Plus, dimensions
Response point

Page 5/37 SEPARIX-C/-T and SEPARIX-Control CT
3.2 Installation …
For sensor installation observe the following safety instructions:
–The installation must be carried out only by expert personnel and in accordance
with all applicable safety regulations. This also applies to any local safety and
accident prevention regulations which are not stated in this user guide.
–The sensors are suitable for installation in Ex Zone 0. Observe all applicable rules
and regulations for potentially explosive atmospheres (VDE in Germany respec-
tively national installation rules and regulations).
–For installing, the sensors must be disconnected from power supply.
–
3.2.1 … of the interface sensor SEPARIX-C L Plus
To avoid the risk of electrostatic charge, the sensors are not permitted to be
used in heavy-flowing, non-conducting fluids (e.g. in pipework or stirred
tanks). The SEPARIX-C L Plus is not permitted to be used in aggressive media.
The interface sensor (4) is suspended on its cable (7) in the light liquid separator (3), im-
mersed into the fluid to be monitored and in a distance of minimum 100 mm to the
separator wall and all separator internal installations (see Figure 3). It should be observed
not to install the sensor directly near the separator’s inlet because of an increased risk of
contamination or disturbance by splashing fluids. The correct fastening method and mate-
rials depend on local installation rules and regulations and the material used for the
separator (concrete, plastic, metal, etc.).
The interface sensor must be installed in such a way that the switch point (5) is undercut at
the maximum permissible layer thickness (6). For example, if a light liquid layer of 300 mm
or more is to be detected, the switch point of the sensor must be 300 mm below the sur-
face of the fluid.
As an adjustment aid, the connection cable can be marked at the appropriate height, e.g.
with a cable tie:
(1) From the sensor tip, measure 40 mm (switch point) plus the layer thickness and
fasten the cable tie to the connection cable as a marking (for example above:
40 mm + 300 mm = 340 mm above the sensor tip).
(2) Install the interface sensor so that the marking is at the level of the liquid surface.

SEPARIX-C/-T and SEPARIX-Control CT Page 6/37
In separators with an automatic closure device, the SEPARIX-C L Plus must
be installed at a height above the closure device appropriate to the dimen-
sions and operating conditions of the separator so that the system operator
still has enough time to take the necessary measures in the event of an
alarm.
The interface sensor is equipped with a non-detachable blue cable (7) (3 x 0.5 mm²)
(SEPARIX-C L Plus: 5 m long). This cable can be shortened or extended up to 250 m with the
use of a junction box (1) suitable for the environmental conditions concerned and an exten-
sion cable (2).
If used in a potentially explosive atmosphere, the extension cable must not
exceed the maximum permissible capacitance and inductance of the meas-
uring transducer (see section 4.5). To avoid disturbances or damage to the
sensor or measuring transducer, the selected junction box must offer suffi-
cient protection against the ingress of moisture or fluid in the environmental
and operating conditions in which it is used.
For connecting the sensor to the measuring transducer, please observe the
installation instructions for SEPARIX-Control CT in this or another user guide
for compatible FAFNIR measuring transducers.
The correct operation of the sensors is guaranteed only in conjunction
with a compatible and approved measuring transducer.
Figure 3: SEPARIX-C, installation
1 Junction box
2 Extension cable
3 Light liquid separator
4 Interface sensor
5 Switch point
6 Layer thickness
7 Sensor cable

Page 7/37 SEPARIX-C/-T and SEPARIX-Control CT
3.2.2 … of the high-level sensor SEPARIX-T L Plus
The SEPARIX-T L Plus is not permitted to be used in aggressive media.
The high-level sensor is suspended on its cable (6) in the light liquid separator (3) in dis-
tance to the inlet because there is an increased risk of contamination or disturbance by
splashing fluids (see Figure 4: SEPARIX-T, installation). The correct fastening method and mate-
rials depend on local installation rules and regulations and the material used for the
separator (concrete, plastic, metal, etc.).
The measuring transducer detects when the sensor tip of the connected high-level sensor
(5) is immersed into fluid (whether light liquid or water). This response point (4) is marked
on the outside of the sensor by a circular groove. The high-level sensor must be installed
in such a way that the response point (4) is at the height above which an alarm is to be
triggered by a rising liquid level.
The high-level sensor is equipped with an undetachable blue cable (6) (2 x 0.5 mm²) with a
length of 5 m. This cable can be shortened or extended up to 250 m with the use of a junc-
tion box (1) suitable for the environmental conditions concerned and an extension cable (2).
Figure 4: SEPARIX-T, installation
1 Junction box
2 Extension cable
3 Light liquid separator
4 Threshold point
5 High-level sensor
6 Sensor cable

SEPARIX-C/-T and SEPARIX-Control CT Page 8/37
If used in a potentially explosive atmosphere, the extension cable must not
exceed the maximum permissible capacitance and inductance of the meas-
uring transducer (see section 4.5). To avoid disturbances or damage to the
sensor or measuring transducer, the selected junction box must offer suffi-
cient protection against the ingress of moisture or fluid in the environmental
and operating conditions in which it is used.
For connecting the sensor to the measuring transducer, please observe the
installation instructions for SEPARIX-Control CT in this or another user guide
for compatible FAFNIR measuring transducers.
The correct operation of the sensors is guaranteed only in conjunction
with a compatible and approved measuring transducer.

Page 9/37 SEPARIX-C/-T and SEPARIX-Control CT
3.3 Maintenance and cleaning …
For sensor maintenance observe the following safety information:
–The maintenance must be carried out only by expert personnel and in compli-
ance with all applicable safety regulations. This also applies to any local safety
and accident prevention regulations which are not stated in this user guide.
–The sensors are suitable for installation in Ex Zone 0.
Observe all applicable rules and regulations for potentially explosive atmos-
pheres (VDE in Germany respectively national installation rules and regulations).
–For servicing, the sensors must be disconnected from power supply.
–To avoid the risk of electrostatic charge, always use a damp cloth to clean the
SEPARIX-C L Plus interface sensors.
As the sensor has no moving parts, no special maintenance is required.
The sensor needs only to be cleaned routinely as part of regular maintenance, cleaning
and clearance work on the separator.
3.3.1 … of the interface sensor SEPARIX-C L Plus
Clean the sensor with a damp cloth to minimise the effects of contaminants that could
trigger a false alarm (see section 3.1). Grease-dissolving cleaning agents can be used for
heavy contamination.
It is recommended to test the sensor whenever it has been cleaned (see section 5).
3.3.2 … of the high-level sensor SEPARIX-T L Plus
Check the sensor routinely for contamination as part of maintenance work on the separa-
tor and after an alarm, and, if necessary, clean it to prevent faulty operation.
After an alarm, the sensor tip in particular should be inspected for contamination. If the
sensor tip is encrusted with dirt, this can be cleaned away using a soft brush and a grease-
dissolving cleaning agent.
Do not use sharp-edged objects to clean the sensor tip under any circum-
stances.
It is recommended to test the sensor whenever it has been cleaned (see section 5).

SEPARIX-C/-T and SEPARIX-Control CT Page 10/37
3.4 Technical Data
Interface sensors
SEPARIX-C L Plus
Ex marking:
II 1 G Ex ia IIB T4 Ga
Certificate
TÜV 03 ATEX 2368 X
Protection class
IP68
Dimensions
28 mm x 195 mm
Cable length
5.0 m
Ambient temperature
-20 °C … +70 °C
-20 °C … +60 °C (explosion-risk area)
Medium temperature
0 °C … +70 °C
0 °C … +60 °C (explosion-risk area)
Connection data
Voltage:
Current:
Power:
Capacitance (externally effective):
Inductance (externally effective):
Ui≤15 V
Ii≤30 mA
Pi≤100 mW
Ci≤10 nF
Li≤100 µH
High-level sensors
SEPARIX-T L Plus
Ex marking:
II 1 G Ex ia IIC T4 Ga
II 1/2 G Ex ia IIC T4 Ga/Gb
Certificate
TÜV 00 ATEX 1656 X
Protection class
IP68
Dimensions
16 mm x 278 mm
Cable length
5 m
Ambient temperature
-25°C … +60 °C
Medium temperature
-25°C … +50 °C
Connection data
Voltage:
Current:
Power:
Capacitance (externally effective):
Inductance (externally effective):
Ui≤30 V
Ii≤200 mA
Pi≤1W
Cinegligibly small
Linegligibly small

Page 11/37 SEPARIX-C/-T and SEPARIX-Control CT
4SEPARIX-Control CT measuring transducer
4.1 Design and function
The SEPARIX-Control CT measuring transducer serves as power supply and signal pro-
cessing of the connected SEPARIX-C L Plus interface sensor and/or the SEPARIX-T L Plus
high-level sensor and together with the sensors forms a warning system for light liquid
separators.
With the interface sensor, the warning system reacts to the thickness of the oil / light liq-
uid layer. It generates an alarm signal before the automatic closure device shuts off the
outlet of the separator due to a high oil / light liquid level.
With the high-level sensor, the warning system reacts to the fluid height (whether oil, light
fluid or water) in the separator. It generates an alarm signal whenever the liquid level in
the separator rises above an impermissible threshold, e.g. due to reverse flow of the sepa-
rator outlet, or because the automatic closure device has shut off the outlet of the
separator due to a high oil / light liquid layer.
The two connectable sensors can individually be activated or deactivated in the SEPARIX-
Control CT.
Figure 5: SEPARIX-Control CT, top view
Faults and alarms are signalled visually by LEDs (1-3) and audibly by a buzzer. Two potential-
free changeover contacts permit the connection of external alarm transmitters and are
switched in the event of an alarm.
Two membrane buttons (4/5) are used to acknowledge faults and alarms as well as to test
the alarm signalling behaviour of the device and, where applicable, connected alarm trans-
mitters. The alarm signalling of the device can be configured individually using the
"Options" DIP switch (see section 4.2).
1: Power LED (green)
2: Fault LED (yellow)
3: Alarm LED (red)
4: Acknowledge button (red)
5: Test button (yellow)

SEPARIX-C/-T and SEPARIX-Control CT Page 12/37
4.1.1 LEDs
The SEPARIX-Control CT measuring transducer is equipped with three LEDs (see Figure 5).
The measuring transducer lamps show different operating states and/or faults:
Power LED (green)
Fault LED (yellow)
Alarm LED (red)
•
blinks repeatedly 1x short if
only the interface sensor is
activated.
•blinks repeatedly 2x short if
only the high-level sensor is
activated.
•blinks repeatedly 3x short if
both sensors are activated.
•OFF, whenever both sensors
are deactivated or the device
is out of operation.
•
blinks repeatedly 1x short if
there is a fault with the inter-
face sensor.
•blinks repeatedly 2x short if
there is a fault with the high-
level sensor.
•blinks repeatedly 3x short if
there is fault with the inter-
face sensor and the high-
level sensor.
•
blinks repeatedly 1x short if
the interface sensor signals
an alarm (max. layer thick-
ness reached/exceeded).
•blinks repeatedly 2x short if
the high-level sensor signals
an alarm (liquid level too
high).
•blinks repeatedly 3x short if
both sensors signal an alarm.
•OFF, when the cause of the
alarm has been rectified.
Possible causes: cable break, short circuit, sensor signal outside the per-
missible range, sensor not working, defect in the sensor evaluation of the
measuring transducer, high-level sensor tip encrusted with dirt.
4.1.2 Buzzer
The measuring transducer is equipped with a buzzer that produces an audible signal in the
event of a fault or alarm.
The acoustic signal will be turned off after pressing the acknowledge button. If desired, the
measuring transducer configuration settings allow to deactivate the buzzer so that it no
longer sounds (see section 4.2).
4.1.3 Membrane buttons
The measuring transducer has two membrane buttons:
•The red acknowledge button (4) confirms faults and alarms signalled by the LEDs
and the buzzer (also in test mode). Pressing the button switches OFF the buzzer and
the relay output returns to the normal operating state. The LEDs continue to signal
the fault or alarm condition.
•Pressing the yellow test button (5) triggers a simulated alarm to proceed a system
test (function of the internal alarm system, the relay outputs and, where applicable,
the connected external alarm transmitters).

Page 13/37 SEPARIX-C/-T and SEPARIX-Control CT
A system test is only possible if the SEPARIX-T L Plus high-level sensor
has been heated up.
If the test button is pressed alone, an unacknowledged alarm will be sim-
ulated. If both the test and acknowledge buttons are pressed
simultaneously, an acknowledged alarm will be simulated.
The test button does not replace the function test of the warning system
(see section 5).
The measuring transducer configuration settings allow both buttons to be locked, e.g. in
cases where the measuring transducer is part of a central control system and the system
operator shall not acknowledge any faults or carry out any tests (see section 4.2).
4.2 Configuration
The measuring transducer is factory preconfigured and ready for operation. With the help
of the "Options" DIP switch you are able to configure SEPARIX-Control CT (see following
table):
Option
DIP switch OFF
DIP switch ON
1
SEPARIX-C …
OFF
ON *
2
SEPARIX-T …
OFF
ON *
3
Relay energised
Alarm *
No alarm
4
Relay acknowledgeable
Yes *
No
5
Alarm delay
60 sec. *
No
6
Acknowledge button
Locked
Unlocked *
7
Test button
Locked
Unlocked *
8
Alarm buzzer
Locked
Unlocked *
* : Default factory setting
Table 1: SEPARIX-Control CT, configuration

SEPARIX-C/-T and SEPARIX-Control CT Page 14/37
Figure 6: SEPARIX-Control CT, terminals and "Options" DIP switch
4.2.1 Activation of SEPARIX-C
With switch 1, the SEPARIX-C L Plus interface sensor is activated. The Power LED indicates
whether the sensor is activated or deactivated (see section 4.1.1). The sensor is activated
by default.
Whenever both sensors will be deactivated, the device is no longer oper-
ational and the Power LED (see Figure 5) is OFF.
4.2.2 Activation of SEPARIX-T
With switch 2, the SEPARIX-T L Plus high-level sensor is activated. The Power LED indicates
whether the sensor is activated or deactivated (see section 4.1.1). The sensor is activated
by default.
Whenever both sensors will be deactivated, the device is no longer oper-
ational and the Power LED (see Figure 5) is OFF.
4.2.3 Relay energised
With switch 3, it is configured whether the relay is energised in case of a fault/alarm or if it
is energised in normal operation. By factory default the relay is set energised in case of a
fault/alarm.
4.2.4 Relay acknowledgeable
With switch 4 the relay is configured whether it can be acknowledged and reset in case of
a fault/alarm with the red acknowledge button. Otherwise, the relay is reset only, if the
cause of the fault/alarm is corrected. By factory default the relay is set acknowledgeable.

Page 15/37 SEPARIX-C/-T and SEPARIX-Control CT
4.2.5 Alarm delay
With switch 5, the alarm delay is configured. By factory default the alarm delay is activated
(60 seconds). A fault or alarm is triggered only if the cause of the fault/alarm is present for
at least 60 seconds. The same applies to the switching off of fault or an alarm: they switch
off 60 seconds after the cause of the fault or alarm has been corrected. The alarm delay is
intended to prevent false alarms, which e.g. could occur by waves or splash water in the
separator. The alarm delay can be deactivated, e.g. for demonstration purposes. For nor-
mal operation, however, it is strongly recommended to have the alarm delay activated in
order to prevent false alarms.
4.2.6 Acknowledge button
With switch 6, the red acknowledge button is configured. By factory default the
acknowledge button is set enabled, so that the fault or alarm can be acknowledged by the
system operator. The button can be locked if an acknowledgement by the system operator
is not required. In this case, the unacknowledged state will persist until the cause of the
fault or alarm has been corrected.
4.2.7 Test button
With switch 7, the test button is configured. By factory default the yellow test button is set
enabled so that an alarm can be simulated and any connected external alarm transmitters
can be tested. If this test mode capability is not required for the system operator, it is pos-
sible to lock the button.
4.2.8 Alarm buzzer
With switch 8, the alarm buzzer is configured. By factory default the internal alarm buzzer
is set enabled so that an audible signal is given for faults and alarms. If an audible signal is
not required, it is possible to disable the buzzer.
4.3 Commissioning
Observe the following safety information for commissioning of the measur-
ing transducer:
•The installation must be carried out only by expert personnel and in accordance
with all applicable safety regulations. This also applies to any local safety and acci-
dent prevention regulations which are not stated in this user guide.
•The measuring transducer must not be installed within the potentially explosive at-
mosphere.
•The wiring must be carried out only with the power disconnected.

SEPARIX-C/-T and SEPARIX-Control CT Page 16/37
Install the measuring transducer in accordance with the connection diagram on the inside
of the device cover.
Observe the maximum operating parameter values specified in the connec-
tion diagram (see Figure 6).
(1) Check the configuration of the measuring transducer and correct if necessary (see
section 4.2).
(2) Whichever applicable, connect the SEPARIX-C L Plus interface sensor to the meas-
uring transducer according to the connection diagram.
(3) Whichever applicable, connect the SEPARIX-T L Plus high-level sensor to the
measuring transducer according to the connection diagram.
If a shielded cable is used, this must be earthed in accordance with na-
tional or local installation rules and regulations.
(4) Whichever applicable, connect external alarm devices to the terminals 6 to 8 (in-
terface relay output) and 9 to 11 (high level relay output) of the SEPARIX-Control
CT measuring transducer.
(5) Connect the measuring transducer to an auxiliary power unit of 230 VAC, 50/60 Hz,
using the terminals marked PE/N/L. The green "Power" LED of the SEPARIX-Control
CT blinks. The warning system is operational.
The SEPARIX-Control CT measuring transducer with a connected
SEPARIX-T L Plus high-level sensor is only operational after the sensor
has heated up. According to the ambient temperature this heating phase
can last up to 2 minutes.
(6) Inform owner and/or system operator about the purpose of the warning system
and, where applicable, of any additional alarm transmitters that have been con-
nected. Point out all aspects specific to the present arrangement, particularly if the
measuring transducer's default factory settings have been changed (e.g.
acknowledge button disabled). Also instruct them how to act in the event of a fault
or an alarm (e.g. acknowledge alarms and faults, customer service phone no. in the
event of an alarm, etc.).

Page 17/37 SEPARIX-C/-T and SEPARIX-Control CT
4.4 Faults and alarms
In case of a fault or an alarm the factory-set SEPARIX-Control CT triggers with the buzzer
an audible alarm signal. In case of a fault, additionally the yellow fault LED blinks, and with
an alarm, additionally the red alarm LED blinks.
4.4.1 Overview of fault and alarm causes
Figure 7:SEPARIX-Control CT, fault and alarm display
Blink code
Power LED (green)
Fault LED (yellow)
Alarm LED (red)
1x short
Interface sensor
Interface sensor
Oil layer
2x short
High-level sensor
High-level sensor
High level
3x short
Interface sensor and
high-level sensor
Interface sensor and
high-level sensor
Oil layer
and high level
4.4.2 Acknowledgement of faults or alarms
•Press red acknowledge button.
The fault or alarm is acknowledged and the buzzer stops. The yellow or red LED
continues to blink because the cause of the fault or alarm has not yet been cor-
rected.
Faults and alarms are repeated every 24 hours after they have been
acknowledged (red acknowledge button pressed) so that they are
brought to the system operator's attention again.
1: Power LED (green)
2: Fault LED (yellow)
3: Alarm LED (red)
4: Acknowledge button (red)
5: Test button (yellow)