NIVOPOINT MR Series User Manual
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Thank you for choosing a NIVELCO instrument.We are sure that you will be satisfied throughout its use.APPLICATIONThe NIVOPOINT MR series of magnetic float level switches are applicable for point levelswitching (high or low) or for alarm (overfill, empty) in liquids.In case of liquids containing metal particles protect the device by using a magnetic filter.2. TECHNICAL DATAModel MR _ _ _ MR _ _ _ ExProbe length 0,25...3 mMaterial of wetted parts Stainless steel DIN 1.4571 / BS 316Ti)Max. process pressure 2,5 MPa (25 bar) (at 20°C)Medium density min. 0,7g/cm3Medium temperature range -40°C to +150°CAmbient temperature range -40°C to +100°COutput 1 to 5 pcs. NO or NC reed relaysSwitching rate 120 W / VA, 250 V AC, 3 A /reed relay, max. 9 ASwitch differential < 10 mmDistance between switch points min. 110 mmScrew terminals in housing withPg 16 for cables ∅7 to ∅14 mmScrew terminals in housing withPg 16 for cables ∅9,5 to∅10Electrical connectionWire cross section: 0,5 to 2,5 mm2Process connection 1" or 2" BSP/NPTSealing material Klingerit 400Electrical protection Class I.Mechanical protection IP 65Dimension of the housing 110 x 80 x 65 mm 160 x 80 x 65 mmCertificate for Ex versions − EEx d IIC T4-T6Weight 0.4 kg + 0.3 kg/m 0.45 kg + 0.3 kg/mUSER’S MANUALManufacturer:NIVELCO Process Control CoH-1043 Budapest, Dugonics u. 11.Tel.: (36-1)-369-7575 Fax: (36-1)-369-8585E-mail: sales@nivelco.com http://www.nivelco.comOPERATIONA magnetic float moving alongside the protection tube trackingthe level, is activating the reed relays incorporated the tube. Afterpassing of the float, the reed relays will retain their output state.The device is capable of direct switching a load within itsspecification.INSTALLATIONThe device should be mounted in vertical position via its processconnection and handled with care to avoid any damage or bendof the protection tube during transportation or installation.After fastening, the position of the cable gland can be rotated±180° as well as the position of reed relays can be set ±25mm.Both adjustments can be done by the switch point adjustmentgland, as follows:– loosen the nut above the hexagon neck– turn the housing as well as adjust the reed relays vertically tothe required position– tighten the nutUse a wrench at the hexagon neck to hold the device againstrotation while loosening and tightening the nut.WARNING!The switch point adjustment gland must not beloosened in tanks under pressure.DIMENSIONS86155-20518 or 24L1L2 L3L4L5min.85min.110min.110min.110min.110min.80Ln=500-3000Pg16S=55 or 701” or 2”± 25mm (adjustment)Ø 52Ø 12Figure 1.: Dimensions of the standard version |
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