NIVELCO NIVOCONT K User Manual
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1. APPLICATIONThe conductive operating principle is suitable for liquids with a specific conductivity of over10 μS / cm. The signal processor detects the resistance between the auxiliary probe and thesensing probes. Conductive devices can only be used to decide whether the level of the mea -sured medium is at a particular level or not. The level of detection is determined by the lengthof the probe stem extending into the tank.The level switch consists of the NIVOCONT KRK–512–5 signal processor and probes select-ed for the particular application. The part of the probe that can be screwed into the tank isNIVOCONT KS–0 probe head carrying one or more KLN–2 probe stems. If theinside of the tank is coated or non-conductive, an auxiliary probe has to be installed, which islonger than both sensing probes. If the tank’s walls are conductive, they can be used as anauxiliary probe.Conductive switches can control the filling and emptying of the tank or genericlevel detection.2. TECHNICAL DATA2.1 GENERAL DATA2.1.1 SwitchKRK–512–5Probe voltage max. 3.5 V ACProbe current < 0.1 mA ACSensitivity Adjustable: 5…100 kΩMax. cable capacitance 800 nF (5 kΩ) 100nF (100 kΩ)Response time max. 400 msMechanical accuracy ±5%Delay Adjustable: 0.5…10 st1 delay 1.5 sRelay output 1× toggle (SPDT)Switching voltage 250 V AC1, 24 V DCSwitching current 8 A AC1Switching power 2000 VA AC1, 240 W DCMin. output power DC 500 mWMechanical life-span 1 × 107 switchingsElectrical life-span 1 × 105 switchingsPower supply Un 24…240 V AC/DC (AC 50–60 Hz)Voltage range allowed nominal voltage –15%…+10%Power consumption max. 2 VAAmbient temperature −20…+55 °C (–4…+131 °F)Electrical connection max. 2.5 mm2 (AWG14)/ with insulation 1.5 mm2 (AWG16)Electrical protection Class IIOvervoltage category* IIPollution degree 2Ingress protection IP20Mechanical connection DIN (EN 60715) railWeight 72 g (0.16 lb)*EN61010-1, tested with 3 kVkrk512en1906hThank you for choosing a NIVELCO instrument! NIVOCONT KKRK–512CONDUCTIVE LEVEL SWITCHManufacturer:NIVELCO Process Control Co.H–1043 Budapest, Dugonics u. 11.Tel.: +36-1-889-0100 Fax: +36-1-889-0200E-mail: sales@nivelco.com www.nivelco.comUSER’S MANUALPDF KRK–512– NIVOCONT KS – 0KLN–2Type CodeCable probe KSINGLE PROBEPP socket PCarbon steel socket SStainless steel socket NMULTIPLE PROBESStainless steel socket HHousing mat. CodeAluminum 2Plastic 3Probe number Code1 + reference probe* 1*2 + reference probe 23 + reference probe 34 + reference probe 4Power supply Code24…240 V AC/DC 5Code Probe length Code0 0 m 0 m 01 1 m (3.3 ft) 0.5 m (1.64 ft) 52 2 m (6.6 ft)3 3 m (10 ft)2.2 ORDER CODES2.4 DIMENSIONS2.3 ACCESSORIES– User’s Manual– Warranty Card– EU declaration of conformity– Seal (2 mm [0.08"] thick)(KLINGER OILIT):1× ⅜" (KSP–201, KSS–201, KSN–201)1× 1½" (KSH–20)– M6 nut (standard SW):3× (KSH–202)4× (KSH–203, KSH–204)– M6 nut (non-st. SW)1× (KSH–204)KSK–201 KSP–201 KSS–201 KSN–201KSH– KLN–2 KLP–201 KLP–204202 203 204 301 302 303 304Number of probes 1 2+r 3+r 4+r 1+r 2+r 3+r 4+r 1 –Insulation of socket ABS PP PFA PP –Cable gland Pg7 M4 nut,protected by a rubber capM20x1.5cable diameter Ø6…12 mm (Ø0.25…0.5 inch) – –Process conn. – ⅜" BSP 1½" BSP M6 –Socket material – PP A44c. steelKO35stainless steel (1.4571) PP KO351.4571 –Housing material – Powder-coatedcast aluminum PBT – PP PVDFMediumtemperaturemax. +80 °C(+176 °F) max. +200 °C (+391 °F) max. +80 °C (+176 °F) –max.+80 °C(+176 °F)max.+130 °C(+266 °F)Max. pressure – 3 bar(43.5 psi) 16 bar (232 psi) 3 bar (43.5 psi) –Ingress protection – IP20 IP65 IP67 –Mass 50 g(0.11 lb) 100 g (0.22 lb) 400 g (0.88 lb) 220 g/m(0.13 lb/ft) –r = reference probe2.1.2 Probe socketsPg7M20x1.5⅜" BSPSwitchKRK–512–Cable ProbeKSK–201Probe SocketKSH–20Probe SocketKSP–201 / KSS–201 / KSN–201ProbeKLN–2Uninsulated base probeM20x1.585Probe SocketKRK–512–SeparatorKLP–204Probe SocketKSH–30SeparatorKLP–201Separator:NIVOCONT KLP–201 – for plastic versionNIVOCONT KLP–204 – for aluminum version*only plastic version |
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