Level measurement Float switch For industrial applications Model RLS-000 WIKA data sheet LM 50.0 Applications Level measurement of liquids in machine building Control and monitoring tasks for hydraulic power packs, compressors and cooling systems Special features Media compatibility: Oil, water, diesel, refrigerants and other liquids Permissible medium temperature range: -0... +50 C (-... +0 F) Up to 4 switching outputs freely definable as normally open, normally closed or change-over contact Potential-free switching reed contacts Description Fig. left: Mounting thread, angular connector, float from NBR Fig. right: Mounting thread, circular connector M x, float from stainless steel The model RLS-000 float switch has been developed for monitoring the level of liquids. The stainless steel used is suitable for a multitude of media, such as, for example, oil, water, diesel and refrigerants. Measuring principle A permanent magnet built into the float triggers, with its magnetic field, the potential-free reed contacts built into the guide tube. The triggering of the reed contacts by the permanent magnet is contact-free and thus free from wear. Depending on customer wishes, the switching functions of normally open, normally closed or change-over can be realised for the defined liquid level. WIKA data sheet LM 50.0 /07 Page of 8 Data sheets showing similar products: Float switch, plastic version; model RLS-000; see data sheet LM 50.04 Float switch with temperature output; model RLS-000; see data sheet LM 50.06 Float switch, intrinsic safety Ex i; model RLS-4000; see data sheet LM 50.07
Specifications Float switch, model RLS-000 Measuring principle Guide tube length L Output signal Switching function Switch position Distance between switch points ) Switching power Accuracy Mounting position Vertical ±0 Process connection Material Wetted Non-wetted Permissible temperatures Medium Ambient Storage Potential-free switching reed contacts are triggered by a magnet in the float. 60...,500 mm (.5... 59 in), other lengths on request Up to, depending on the electrical connection: SP, SP,, Alternatively normally open (NO), normally closed (NC) or change-over (SPDT) contact - on rising level Specified in mm, starting from the upper sealing face (SP... ) At the end of the guide tube 45 mm (.8 in) cannot be used for switch positions. Minimum distance SP to the upper sealing face: 50 mm (.0 in) Minimum distance between the switch points: 50 mm (.0 in), for floats with outer = 44 mm (.7 in), 5 mm (.0 in) 0 mm (. in), for floats with outer = 5 mm (.0 in), 0 mm (. in) Minimum distance with switch points: 80 mm (. in), either between SP and SP or SP and Minimum distance with : 80 mm (. in), between SP and Floats with outer = 44 mm (.7 in), 5 mm (.0 in) Normally open, AC 0 V; 00 VA; A normally closed: DC 0 V; 50 W; 0.5 A Change-over contact: AC 0 V; 40 VA; A DC 0 V; 0 W; 0.5 A Floats with outer = 5 mm (.0 in), 0 mm (. in) Normally open, AC 00 V; 0 VA; 0.5 A normally closed: DC 00 V; 0 W; 0.5 A Change-over contact: AC 00 V; 5 VA; 0.5 A DC 00 V; 5 W; 0.5 A ± mm switch point accuracy incl. hysteresis, non-repeatability G, installation from outside G ½, installation from outside G, installation from outside Flange DN 50, form B per EN 09- (DIN 57), PN 6, installation from outside Process connection, guide tube: Stainless steel 6Ti Float: See table on page Case: Stainless steel 6Ti Electrical connection: See table on page -0 +80 C (- +76 F) -0 +0 C (- +48 F) -0 +50 C (- +0 F) -0 +80 C (- +76 F) -0 +80 C (- +76 F) 4) 6) 5) 6) G ⅛, installation from inside ) ) G ¼, installation from inside ) ) G ⅜, installation from inside ) G ½, installation from inside ) ) Smaller minimum distances on request ) Only for versions with cable outlet ) Not with 4) Not with cable material: PVC, PUR; max. change-over contact or normally closed/normally open contacts with float outer diameter D = 0 mm; not with connection housing 58 x 64 x 6 mm 5) Only with cable material: Silicone or connection housing 75 x 80 x 57 mm 6) Not for shipbuilding version Page of 8 WIKA data sheet LM 50.0 /07
Electrical connections ) Angular connector DIN EN 750-80 A ) Circular connector M x (4-pin) ) Cable outlet ) Cable outlet ) Cable outlet ) Cable outlet shipbuilding Connection housing standard Dimensions: 75 x 80 x 57 mm (.0 x. x. in) For cable diameter: 5... 0 mm (0.... 0.4 in) Connection housing compact Dimensions: 58 x 64 x 6 mm (. x.5 x.4 in) For cable diameter: 5... 0 mm (0.... 0.4 in) Max. switch point definition NO/NC SPDT NO/NC NO/NC + SPDT 4 SPDT 4 SPDT NO/NC + SPDT 4 SPDT 4 SPDT NO/NC + SPDT SPDT Ingress protection per IEC/EN 6059 ) Protection class Material IP65 SK I PA - IP65 SK II TPU, brass Cable length IP67 SK II PVC m (6.5 ft) 5 m (6.4 ft) IP67 SK II PUR other lengths on request IP67 SK II Silicone IP67 SK II Polyolefin IP66 SK I Aluminium, glands from polyamide, brass, stainless steel IP66 SK I - Float Form Outer diameter D Height H Operating pressure Medium temperature Density Material Cylinder 4) 7) 44 mm (.7 in) 5 mm (.0 in) 6 bar ( psi) 50 C ( 0 F) 750 kg/m³ (46.8 lbs/ft³) 6Ti H Cylinder 5) 0 mm (. in) 6 mm (.4 in) 0 bar ( 45 psi) 0 C ( 48 F) 850 kg/m³ (5. lbs/ft³) 6Ti D Cylinder 5) ) 5 mm (.0 in) 7 mm (0.7 in) 6 bar ( psi) 80 C ( 76 F) 750 kg/m³ (46.8 lbs/ft³) Buna / NBR Sphere 6) 7) 5 mm (.0 in) 5 mm (.0 in) 40 bar ( 580 psi) 50 C ( 0 F) 750 kg/m³ (46.8 lbs/ft³) 6Ti H D ) Not for shipbuilding version ) Versions with protective conductor on request ) The stated ingress protection (per IEC/EN 6059) only applies when plugged in using mating connectors that have the appropriate ingress protection. 4) Not with process connection G, guide tube length L 00 mm (L.94 in) 5) Guide tube length L,000 mm (L 9.7 in), switch points max. NO/NC or SPDT definable 6) Not with process connection G, G ½, guide tube length L 00 mm (L.94 in) 7) Not with process connection G ⅛ WIKA data sheet LM 50.0 /07 Page of 8
Cable outlet ) Normally open/normally closed (NO/NC) Change-over contact (SPDT) Connection diagram Angular connector DIN EN 750-80 A Normally open/normally closed (NO/NC) Change-over contact (SPDT) switch points switch point 4 SP SP SP 4 4 Circular connector M x (4-pin) Normally open/normally closed (NO/NC) switch points SP SP Change-over contact (SPDT) switch point SP 4 switch points SP SP 4 SP SP SP SP WH GN GY BU WH YE BU VT BN YE PK RD BN GY RD GYPK GN PK BK RDBU ) For combinations of different switching output functions the PIN assignment is marked on the product label. Page 4 of 8 WIKA data sheet LM 50.0 /07
Aluminium case Standard Normally open/normally closed (NO/NC) Change-over contact (SPDT) SP SP SP SP W7 0 W7 0 W8 W8 W W6 W9 Compact ) Normally open/normally closed (NO/NC) Change-over contact (SPDT) switch points SP SP switch points SP SP switch points W W6 SP SP W W6 SP SP W ) For combinations of different switching output functions the PIN assignment is marked on the product label. Legend SP - WH BN GN YE GY PK BU RD BK VT GYPK RDBU Switch points White Brown Green Yellow Grey Pink Blue Red Black Violet Grey/Pink Red/Blue Electrical safety Insulation voltage DC,0 V WIKA data sheet LM 50.0 /07 Page 5 of 8
Dimensions in mm (in) with angular connector form A with M x circular connector with cable outlet with connection housing Angled version (on request) Compact Standard Legend L Guide tube length T Non-usable range for switching points Float stop Adjusting collar, for medium temperature 80 C ( 76 F) Pipe clamp, for medium temperature > 80 C (> 76 F) and shipbuilding versions Page 6 of 8 WIKA data sheet LM 50.0 /07
Process connection Installation from outside Installation from inside G L G 6 mm (0,6 in) G ½ 8 mm (0,7 in) G 0 mm (0,79 in) G L G ⅛ B mm (0,47 in) G ¼ B mm (0,47 in) G ⅜ B mm (0,47 in) G ½ B 4 mm (0,55 in) Flange DN 50, form B per EN 09- (DIN 57), PN 6 Accessories Circular connector M x with moulded cable Description Temperature range Cable diameter Cable length Order no. Straight version, cut to length, 4-pin, PUR cable, UL listed, IP67-0... +80 C (-4... +76 F) 4.5 mm (0.8 in) m (6.6 ft) 4086880 5 m (6.4 ft) 408688 0 m (.8 ft) 4086884 Angled version, cut to length, 4-pin, PUR cable, UL listed, IP67-0... +80 C (-4... +76 F) 4.5 mm (0.8 in) m (6.6 ft) 4086889 5 m (6.4 ft) 408689 0 m (.8 ft) 408689 WIKA data sheet LM 50.0 /07 Page 7 of 8
Approvals Logo Description Country EU declaration of conformity European Union Low voltage directive RoHS directive DNV GL ) Ships, shipbuilding (e.g. offshore) International ) Only for shipbuilding version Manufacturer s information and certificates Logo Description - China RoHS directive Approvals and certificates, see website Ordering information Model / Output signal / Switching function / Electrical connection / Process connection / Guide tube length L / Medium temperature 0/07 WIKA Alexander Wiegand SE & Co. KG, all rights reserved. The specifications given in this document represent the state of engineering at the time of publishing. We reserve the right to make modifications to the specifications and materials. Page 8 of 8 WIKA data sheet LM 50.0 /07 /07 EN WIKA Alexander Wiegand SE & Co. KG Alexander-Wiegand-Straße 0 69 Klingenberg/Germany Tel. +49 97-0 Fax +49 97-406 info@wika.de www.wika.de