Leabhar-làimhe stiùireadh atharrachadh ìre Labkotec Oy SET-TSHS2 Sensors Ìre Capacitive
SYMOBAIL
Rabhadh/An aire
Thoir aire shònraichte do ionadan aig àileachdan spreadhaidh
Fig. 1. SET/TSH2 and SET/TSHS2 dimensional drawings
COITCHEANN
SET/TSH2 and SET/TSHS2 are capacitive level detectors for liquids.
V-versions are utilized with conductive liquids to indicate either low or high level, or for example oil/water interface in an oil separator. Oversions are convenient for use with non conductive liquids, like oil, to indicate low or high level.
SET/TSH2 is a generic sensor and it suits for most applications.
SET/TSHS2 is basically the same sensor with a fork as a counterelectrode. It is meant for more challenging environments, e.g. grease, heavy oil or clogging liquids. The sensors are apparatus of equipment group II, category 1 G and can be installed in Zone 0/1/2 hazardous area.
Fig. 2. Iarrtasan
LEANMHUINN AGUS GNATH-FHOCAIL
The sensor is equipped with a shielded 3-wire cable. 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 and Operating Instructions of the control unit.
The sensor 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 causes an alarm when its sensing element is half-immersed in the measureable liquid. The sensor can be installed by hanging it on its cable from a tank ceiling or it can be fixed in its place with an installation pipe equipped with a ¾” inside thread. The fixed mounting prevents movement of the sensor when there is flow in the tank.
When installing the sensor into an explosion hazardous area (0/1/2), the following standards need to be followed; IEC/EN 60079- 25 Electrical apparatus for potentially explosive atmospheres – Intrinsically safe electrical system “i”, IEC/EN 60079-14 Electrical apparatus for explosive gas atmospheres.
Fig. 3. Ceangal example
A 'CUR A' phuing SWITCHING
- Immerse the sensor into the liquid to be measured so that the sensing element of SET/TSH(S)2-O/V sensor is half-immersed in the liquid (the teflon coated rod acts as the sensing element) as in fig. 4.
- Turn the sensitivity trimmer of the Labkotec SET control unit so that the alarm led just goes on.
- Check the function by lifting and immersing the sensor couple of times into the liquid.
Check also the Installation and Operating Instructions of the control unit in case of special instructions for the particular application.
Fig. 4. Adjusting the switching point
Mura h-eil AN SENSOR ag obair
If the sensor is located in a hazardous area an Exi-classified multimeter must be used and the Ex-standards mentioned in chapter 5. SERVICE AND REPAIR must be followed. Make sure that the Fault-led, which reports malfunction, is not on. If the
Fault-led is on, repair any breakdown or short circuit in the electric circuit.
You can also check the function of the sensor by measuring its supply voltage (V) and current consumption (I) using a multimeter.
Tomhas voltage between control unit connectors + and -. The voltage should be 10.5…12 VDC.
Connect mA-gauge to the sensor circuit according to the figure below by disconnecting wire no. 1 from the control unit.
Fig. 5. Measuring the sensor current
Sensor sruth ann an diofar shuidheachaidhean:
| TSH2-O | TSHS2-O | |
| sensor clean and entirely air | 5…6,5 mA | 5…6,5 mA |
| sensor entirely immersed in oil | 9,,,12,5 mA | 9…12,5 mA |
| TSH2-V | TSHS2-V | |
| sensor clean and entirely air | 5…6 mA | 5…6 mA |
| sensor entirely immersed in water | 10…12 mA | 10,5…12,5 mA |
SEIRBHEIS AGUS CÀRADH
The sensor must always be cleaned up 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.
Feumar seirbheis, sgrùdadh agus càradh ex-inneal a dhèanamh a rèir inbhean EN IEC 60079-17 agus EN IEC 60079-19.
DATA TEICNEACH
| SET/TSH(S)2 sensor | |
| Aonad smachd | Aonadan smachd SET Labkotec |
| Càball | Shielded oil-proof instrumentation cable 3 x 0.5 mm2 Ø 5,1mm.Standard length 5 m. Other lengths optional.Max. cable loop resistance 75 Ω. |
| TeòthachdGnìomhachSàbhailteachd | -25 C…+60 C-25 C…+70 C |
| Stuthan | AISI 316, Teflon, NBR-concentrate |
| EMCDìonachd Emission | EN IEC 61000-6-3EN IEC 61000-6-2 |
| Seòrsachadh IPBrathadair Bogsa ceangail | IP68 IP67 |
| Ex-seòrsachadh ATEX Suidheachaidhean sònraichte (X) | II 1 G Ex ia IIB T5 Ga VTT 03 ATEX 024XTa = -25 C…+70 CThe sensor cable can be extended with the junction box type LJB3-78-83 or LJB2-78-83. |
| Luachan ceangail roimhe | Ui = 18 V I = 66 mA Pi = 297 mWCi = 3 nF Li = 30 µH |
| Prionnsabal obrachaidh | Capacitive |
| Bliadhna saothrachaidh: Feuch an toir thu sùil air an àireamh sreathach air an t-seòrsa truinnsear | xxx xxxxx xx YY xwhere YY = manufacturing year (e.g. 19 = 2019) |
FOILLSEACHADH AN EU
Tha sinn le seo a’ cur an cèill gu bheil an toradh a tha air ainmeachadh gu h-ìosal air a dhealbhadh gus gèilleadh ri riatanasan buntainneach nan stiùiridhean agus inbhean ainmichte.
Bathar
Level Sensor SEMSH2, SEVISHS2, SET/TSH2/VP
Dèanadair
Labkotec Oy Myllyhaantie 6 EI-33960 Plrkkala Finland
Stiùiridhean
The product is In accordance with the following EU Directives: 2014/30/EU Electromagnetic Compatibility Directive (EMC) 2014/30/EU Equipment for Potentially Explosive Atmospheres Directive (ATEX) 2011/65/EU Restriction of Hazardous Substances Directive (RoHS)
Ainm-sgrìobhte
Tha an dearbhadh co-chòrdaidh seo air a thoirt seachad fo uallach an neach-dèanamh a-mhàin. Air a shoidhnigeadh airson agus às leth Labkotec Oy.
Pirkkala 4.8.2021
Janne Uusinoka, Ceannard Labkotec Oy
Sgrìobhainnean/Goireasan
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