LSK x2x Conductive Level Sensor Wetted parts in acid-proof, stainless steel and PEEK Compact, food compatible, hygienic design 3A approved, FDA and EHEDG compliant Process temperature -20...140°C LSK320 Optimised flow geometry Millimetre precise switch point LSK420 Installation in pipes from DN25 and upwards Optional PTFE coating Optional switching electronics (LKP100) LKP100 Description The conductive level sensor LSK is used for level detection and dry run The LSK provides a resistance output by itself. A level control module protection in conductive liquids. e.g. LKP 100 or DNGA 230100 must be installed to provide a relay output. The LSK measures the resistance between the ground potential and the sensing element covered by the conductive liquid. The hygienic installation is ensured by using a hygienic process weld-in sleeve e.g. PM 020. The rod electrode can be shortened to any The tank or pipe side acts as the ground potential. If the tank is made required length simply by cutting the length. of a non-conducting material a ground electrode must be installed. The LSK is well suitable for CIP and SIP processes. www.baumerprocess.com Design and specifications subject to change without notice Data Sheet LSK-1 Page 1 Technical Data Amplifier LKP100 Sensor Principle Resistive measurement Input Process connection G1/2 hygienic Amb. temperature-20...60°C Stub ø8 mm Power supply 18...36 Vdc; 10 mA max. (+ load) Rod ø4 mm Sensitivity 200 Ohm; 2 KOhm, 20KOhm (wiring) Electrode 20...200 cm, see "Ordering Details" Switching function Selectable output polarity Insulating material PEEK Damping 0.5 sec. (fixed) Relay output Max. load 50 mA, short circuit protected Electrical connection MonitorLED Cable gland M16 Plast Plug M12 Electrode and ground Nickel-plated brass or Stainless Steel Dimensions ø44 x 21 mm EMC data Mechanical data Housing Stainless Steel, W1.4301/AISI 304 Process conn. and rod Stainless Steel, W1.4404/AISI 316 L Immunity EN 61326 Emission EN 61326 Process temperature-20...140°C Disposal of product and packing Amb. temperature-20...85°C According to national laws or by returning to Baumer Protection classIP67 Media pressure Max. 16 bar Vibrations IEC 68-2-6, GL test2 Powder Coating PTFE, Accofal 3G54 Approval3A Adapters Refer to “Accessories” data sheet Dimensional Drawings [mm] ø55 M12 Plug 58 M16 Gland AF22 46 G1/2 Rod ø4 length 18,5 ø8 Metal tip Housing + stub sensor www.baumerprocess.com Design and specifications subject to change without notice Rod sensor Data Sheet LSK-1 Page 2 Electrical Installation Amplifier LKP100 2 + 3 4 5 S 6 Input 1 Gnd 18...36 Vdc + 2 Input 3 4 5 S 6 Gnd 1 18...36 Vdc - 4 2: White 50 mA 2 3 3: Blue Gnd 1 1 Input 2 4 3 Gnd + 4 1 50 mA 2 0 mA - 3 S LED Connection ø7 Typical application 20 KOhm / 50 mS/cm2 Terminal S connected to + (plus) Water 2 KOhm / 500 mS/cm2 Terminal S not connected Beer, juice, youghurt 200 Ohm / 50 mS/cm Acid, Alkalis 2 2 4: Black S - LED E 1: Brown 1 Output load max. 50 mA Sensibility Connection terminal M12 Plug 0 mA Output load max. 50 mA - + M12 Plug Terminal S connected to - (minus) 33 ø44 Note: Terminal S is for local or remote setting of the sensibility. Ordering Details - LSK x2x LSK x2x (xxx) x Type (Excl. welding part or adapter) Approval Stub (Do not specify rod length) Uncoated - 1 rod Coated (PTFE) - 1 rod Stub (Do not specify rod length) 3A Uncoated - 1 rod 3A Coated (PTFE) - 1 rod 3A 4´ digit Amplifier Without amplifier With built-in LKP100 6´ digit 0 1 2 3 4 5 0 1 Rod Length (cm) 7´...9´ digit As customers specification (max. 200 cm) Electrical connection 10´ digit Cable gland, M16, Polyamid Plug, M12, Nickel Plated Brass Plug, M12, Stainless Steel 3.1 material certificate, type number 5509-227 xxx 1 2 3 www.baumerprocess.com Design and specifications subject to change without notice Data Sheet LSK-1 Page 3 3A Approval The LSK32x, LSK42x and LSK52x are approved by 3A providing it is mounted in a 3A approved counter part and installed according to the guidelines given in the installation manual. The 3A approved products fulfill the FDA demands and follow the EHEDG guidelines regarding design, materials and finishing. Refer to the 3A marked counter parts in the data sheet “Accessories”. PEEK natura Angle > 135 deg. R > 6.35 mm UK/2012-08-29 This data sheet may only be reproduced in full. PEEK natura Angle > 135 deg. www.baumerprocess.com Design and specifications subject to change without notice Data Sheet LSK-1 Page 4