NIVOCONT CONDUCTIVE LEVEL SWITCHES O UR P ROFESSION IS Y OUR L EVEL
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