N I V O C O N TC O N D U C T I V E L E V E L S W I T C H E S

O U R P R O F E S S I O N I S Y O U R L E V E L

PPRROOBBEESS

AACCCCEESSSSOORRIIEESS DDEERRAATTIINNGG DDIIAAGGRRAAMM

CCOOMMPPAACCTT SSWWIITTCCHH

AAPPPPLLIICCAATTIIOONN

KSH-202 KSH-203 KSH-204KSK-201 KKH-102

Uninsulated reference probeUninsulated reference probe

Insulated probes

KLN-2_ _ KLP-204 Maximum allowed pressure-temperature values for steel probe socket

Single probe socket Multi probe socket

Probe Separator

Insulated probes

O U R P R O F E S S I O N I S Y O U R L E V E L

Level switches, based on the conductivity principle, can beapplied to liquids with conductivity higher than 10 µS/cm. Fordetecting the level, probes are immersed into the tank. Theseprobes (and the conductive tank wall) serve as contacts of anelectric circuit. Instruments can be equipped with maximum 4 probes and an additional reference probe for cases of non-conductive tank wall. Their length should be in accordancewith the level to be detected. The liquid in the tank changes theelectrical conductivity between the tank wall (or the referenceprobe) and probes. The established connection will beconverted to an output signal. If the tank wall is conductive itcan be used as a reference probe, otherwise a separatereference probe must be used.

NNIIVVOOCCOONNTT CCOONNDDUUCCTTIIVVEE LLEEVVEELL SSWWIITTCCHHEESS

PPRROOBBEE AANNDD RREELLAAYY UUNNIITT CCOOMMPPAACCTT CCOONNDDUUCCTTIIVVEE LLEEVVEELL SSWWIITTCCHH

MMAAIINN FFEEAATTUURREESS

KKRRKK--551122 KKRRKK--552222 KKKKHH--110022

Level switchingFilling-emptying controlSelectable NO/NC relay functionAdjustable delay timeAdjustable sensitivityAC/DC versions

2 independent relay outputs for 1 level2 independent relay outputs for 2 independent levels2 relay outputs for filling-emptying controlSelectable NO/NC relay functionAdjustable delay ON and delay OFF timeAdjustable sensitivityAC/DC versions

Probe and relay in one unit2 independent relay outputs for pump control or differential level switchingSelectable NO/NC relay functionSwitch on/off delayAdjustable sensitivity

Submersible probe

LLEEVVEELL DDEETTEECCTTIIOONN

11 ttaannkk,, 11 lleevveell 11 ttaannkk,, 22 lleevveellss

KRK-512 KRK-522

22 ttaannkk,, 11 lleevveell ffoorr eeaacchh

KRK-522

LLEEVVEELL CCOONNTTRROOLL

KRK-512 KRK-522

AA11,, AA22 .......power supplyCC................reference probeEE11 ..............upper level probeEE22 ..............bottom level probe

SS.......................cable shielding1155,, 1166,, 1188.........1st relay output2255,, 2266,, 2288.........2nd relay output

AAPPPPLLIICCAATTIIOONN EEXXAAMMPPLLEESS,, WWIIRRIINNGG

DDIIMMEENNSSIIOONNSS OOPPEERRAATTIIOONN

KKKKHH--110022 CCOOMMPPAACCTT LLEEVVEELL SSWWIITTCCHH

KRK-512

KRK-522

* Ref. probeconductive tanknon-conductive tank

Pump control (filling - emptying)

O U R P R O F E S S I O N I S Y O U R L E V E L

KKRRKK--

551122

KKRRKK--

552222

NNIIVVOOCCOONNTT KK SS –– 22 00

TTEECCHHNNIICCAALL DDAATTAA

OORRDDEERR CCOODDEESS

PPrroobbee

RReellaayy UUnnii tt

SSeeppaarraattoorr ::

CCoommppaacctt sswwii ttcchh

NNIIVVOOCCOONNTT KK RR KK –– 55 22 ––

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N I V E L C O P R O C E S S C O N T R O L C O.H - 1 0 4 3 B U D A P E S T , D U G O N I C S U . 1 1.TEL. : (36-1) 889-0100 FAX: (36-1) 889-0200E - m a i l : s a l e s @ n i ve l c o. c o m h t t p : / / w w w. n i ve l c o. c o m

NNIIVVOOCCOONNTT KKLLPP--220044

NNIIVVOOCCOONNTT KKKKHH--110022

PPRROOBBEESSSSIINNGGLLEE PPRROOBBEE MMUULLTTII PPRROOBBEE SSUUBBMMEERRSSIIBBLLEE

KKSSPP--220011 KKSSSS--220011 KKSSNN--220011 KKSSHH--220022 KKSSHH--220033 KKSSHH--220044 KKSSKK--220011

Number of probes 1 2+reference 3+reference 4+reference 1

Probe socket material PP carbon steel 1.4571 1.4571 1.4571

Housing – Aluminium cast PP

Insulation of socket PP P FA –

Medium temperature –20°C...+80°C –20°C...+200°C / see Derating Diagram –20°C...+80°C

Pressure max. 0.3 MPa max. 1.6 MPa –

Process connection 3/8” BSP 1 1/2” BSP with integratedcable

Electrical connection M6 nut, with rubber cap M20x1.5 1xPg 9

Ingress protection IP 20 IP 65 –

Mass (w.o. probe) 0.1 kg 0.4 kg 0.04 kg

RREELLAAYY UUNNIITTSS KKRRKK--551122 KKRRKK--552222

Power supply110,230 VAC 24 V AC/DC 110,230 VAC 24 V AC/DC

–15...+10%

Power consumption max. 2.5 VA max. 2.5 VA

Probe voltage 5 V AC

Probe current max. 0.5 mA max. 1 mA

Output 1 pc SPDT 250V 16A, AC1 2 pcs SPDT 250V 16A, AC1

Ingress protection IP 20

Electrical protection Class II. Class III. Class II. Class III.

Ambient temperature –20°C...+55°C

Sensitivity adjustable: 5 kΩ - 100 kΩ

Delay ON 0.5 – 10 sec

Delay OFF – 0.5 – 10 sec

Mech. connection DIN EN 60715 rail

Mass 76 g 240 g

CCOOMMPPAACCTT UUNNIITT KKKKHH--110022

Probes 4 insulated + reference probe

Medium temperature –15 °C ... +120 °C

Pressure max. 1.6 MPa

Ambient temperature –15 °C ... +80 °C

Output 2 pcs. SPDT relay 250 V AC, 8A, AC1

Sensitivity Adjustable, 35...50 kΩ

Probe voltage 24 V AC

Probe current max. 0.45 mA

Supply voltage24/110/230 V AC, +10% -15%,

50/60 HzPower consumption < 4 VA

Housing Aluminium cast

Materialofwettedparts

Process conn. Stainless Steel 1.4571

Insulation PFA

Probe Stainless Steel 1.4571

Process connection 1 1/2” BSP

Electrical connection 2 x M20x1.5 for Ø 6 …12 mm cables0.75 … 2.5 mm2 wire cross section

Electrical protection Class I.

Ingress protection IP 65

Mass 0.6 kg (without probe stems)

TTYYPPEE CCOODDEESingle probe, PP socket P

Single probecarbon steel socket (A 38) S

Single probe, 1.4571 socket N

Multi probe, 1.4571 socket H

Plastic House K

NNRR.. OOFF PPRROOBBEESS CCOODDEE1 pc 1

2 pcs + reference probe 2

3 pcs + reference probe 3

4 pcs + reference probe 4 LLEENNGGTTHH CCOODDEE0 m 0

1 m 1

2 m 2

3 m 3

4 m 4

PPOOWWEERR SSUUPPPPLLYY CCOODDEE230 V AC 1

110 V AC 2

24 V AC/DC 4

TTYYPPEE CCOODDEE1 x SPDT 1

2 x SPDT 2

NNIIVVOOCCOONNTT KK LL NN -- 22