Labkotec D25201FE-3 SET OS2 Capacitive Level Probe Instruction Manual
- June 13, 2024
- Labkotec
Table of Contents
SET/OS2
Capacitive Sensor for Liquid Level Detection
**Installation and Operation Instructions
**
SYMBOLS
Warning / Attention
Pay special attention to installations at explosive atmospheres
GENERAL
SET/OS2 is a level detector for high level, low level and e.g. leak detection.
Typical applications are oil separators and grease traps where oil/water
interface or water/air interface need to be detected.
The operational principle of the SET/OS2 sensor is capacitive and it can be
connected to Labkotec SET-series control units.
SET/OS2 is an apparatus of equipment group II, category 1 G. The sensor can be
installed in zone 0/1/2 hazardous area.
CONNECTIONS AND INSTALLATION
SET/OS2 is equipped with a shielded 3-wire cable. The wires 1 and 2 shall be
connected to the corresponding connectors (1 = +, 2 = -) in the control unit.
Wire 3 shall be connected to equipotential ground together with the shield of
the cable. Please refer also to the installation instructions of the control
unit.
The cable can be shortened or, when the control unit is located further away
from the sensor, the cable can be extended with the junction box. The sensor
can be installed to hang up in the air from the top of the tank to generate
the high level alarm or immersed into the liquid to generate the low level or
oil/water alarm.
When installing the sensor into an explosion hazardous area (0/1/2), the
following standards need to be followed; EN IEC 6007925 Electrical apparatus
for potentially explosive atmospheres – Intrinsically safe electrical system
“i”, EN IEC 60079-14 Electrical
apparatus for explosive gas atmospheres.
The sensor shall not be installed into a space where caustic vapour, gas or
liquid, such as aromatic and chlorinated hydrocarbons or strong alkalis or
acids, can damage the equipment.
ADJUSTING THE SWITCHING POINT
- Turn the SENSE trimmer of the control unit to the extreme clockwise position.
- Immerse the sensor to the liquid to be measured. When 30-40 mm of the sensor is immersed in liquid, the control unit should operate. If it doesn’t, adjust the SENSE trimmer slowly counter clockwise until the desired switching point is reached. As for conductive liquids (water etc.), the switching point should be achieved when 10-20 mm of the sensor is immersed.
- Check the function by lifting and immersing the sensor few times into the liquid.
IF THE SENSOR DOES NOT WORK
If the sensor is located in a hazardous area an Exi-classified multimeter must
be used and the Ex-standards mentioned in chapter 4. SERVICE AND REPAIR must
be followed.
Make sure that the sensor is properly connected to the control unit. The
voltage between connectors 1 and 2 in the control unit should be 10,5…12V.
If the voltage is correct, measure the sensor current as follows:
- Connect the ampere meter according to the picture below by disconnecting the conducting wire 1 from the central unit.
- Measure the current.
Sensor current in different conditions:
Version O (Code = SE6311)|
---|---
clean and dry sensor in air| 5…7 mA
sensor entirely in oil (εr ≈ 2)| 9…11 mA
sensor entirely in water| 12…16 mA
Version V (Code = SE6312)|
clean and dry sensor in air| 5…6 mA
sensor entirely in water| 12…16 mA
SERVICE AND REPAIR
The sensors must always be cleaned down and tested when emptying the tank or
separator and when carrying out annual maintenance. For cleaning, a mild
detergent (e.g. washing-up liquid) and scrubbing brush can be used.
Service, inspection and repair of Ex-apparatus needs to be done according to
standards EN IEC 60079-17 and EN IEC 60079-19.
TECHNICAL DATA
SETOS2 sensor
| Control units | Labkotec SET control units |
|---|---|
| Cable | Shielded, oil-proof instrumentation cable 3 x 0,5mm2 0 5,7mm. Standard |
length is 5m. Can also be delivered according to the order with a maximum 15 m
long cable. The cable can be e x t ended with a similar instrumentation cable.
The maximum pair resistance of the cable should not extend 75 0.
Temperature
Operational
Safety| -25 °C…1-60 °C
-25 °C…1-60 *C
Materials| AISI 316, PVC
EMC
Emission
Immunity| EN IEC 61000-6-3
EN IEC 61000-6-2
IP-classification
Sensor Junction box| IP68
IP67
Ex-luokitus
ATEX
Special conditions (X)| Il 1 G Ex is IIA T5 Ga
VTT 03 ATEX 009X
Ta = -25 °C…4-60 °C
The sensor cable can be extended with the junction box type LJB3-78-83 or
LJB2-78-83.
Ex-connection values| Ui = 18 V I = 66 mA Pi = 297 mW
Ci = 3 nF Li = 30 pH
UN= 9…18 V
Operating principle| Capacitive
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)
EU DECLARATION OF CONFORMITY
We hereby declare that the product named below has been designed to comply
with the relevant requirements of the referenced directives and standards.
Product Level sensor SEVOS2, SEVOSK2
Manufacturer
Labkotec Oy Myllyhaantie 6 FI-33960 Pirkkala
Finland
Directives
The product is in accordance with the following EU Directives:
2014/30/EU Electromagnetic Compatibility Directive (EMC)
2014/34/EU Equipment for Potentially Explosive Atmospheres Directive (ATEX)
2011/65/EU Restriction of Hazardous Substances Directive (RoHS)
Standards
The following standards were applied:
EMC: EN IEC 61000-6-2:2019 EN IEC 61000-6-3:2021
ATEX: EN IEC 60079-0:2018 EN 60079-11:2012
EC-type examination certificate: VTT 03 ATEX 009X.
Notified Body: VTT Expert Services Ltd, Notified Body number 0537.
The revised harmonised standards have been compared to the previous standard
versions used in the original type certification and no changes in the “state
of the art” apply to the equipment.
RoHS: EN IEC 63000:2018
The product is CE-marked since 2003.
Signature
This declaration of conformity is issued under the sole responsibility of the
manufacturer. Signed for and on behalf of Labkotec Oy.
Labkotec Oy
Myllyhaantie 6
FI-33960 PIRKKALA
FINLAND
Tel: 029 006 260
Fax: 029 006 1260
Internet:www.labkotec.fi
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>