{"title":"Load cells SIL \/ PL","description":"\u003ch2\u003eLoad cells and force transducers for SIL and PL applications\u003c\/h2\u003e\n\u003cp\u003eWhen a force measurement takes on a protective function — overload protection on a crane, rope force monitoring above the audience area, closing force limitation on a press, force monitoring in human-robot collaboration — the transducer becomes the first link in the safety chain. It then has to do more than measure accurately: it has to make its own failure detectable.\u003c\/p\u003e\n\u003ch3\u003eOne measuring circuit is not enough for that\u003c\/h3\u003e\n\u003cp\u003eIf a single strain gauge bridge fails, it often keeps delivering a plausible signal — and the controller notices nothing. Safety-related transducers therefore work \u003cstrong\u003etwo-channel in a 1oo2 architecture\u003c\/strong\u003e: two completely independent full bridges sit on the same spring element, galvanically isolated, with physically separated wiring and separate cable outlets or isolated connectors. Both measure the same force. If they diverge, the safety system detects the discrepancy and moves into the safe state.\u003c\/p\u003e\n\u003ch3\u003eTwo ways to make a fault visible\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInverted analogue signals.\u003c\/strong\u003e Channel A outputs 4…20 mA, channel B runs the other way with 20…4 mA. The sum has to be 24 mA at all times, and any deviation is a fault — an addition in the controller is enough to check it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital safety protocols.\u003c\/strong\u003e Integrated electronics with CANopen Safety or PROFIsafe monitor timing, data integrity and lost telegrams cyclically.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe evidence is part of the transducer\u003c\/h3\u003e\n\u003cp\u003eSIL to EN IEC 61508 (SIL 1 to SIL 4) and PL to EN ISO 13849-1 (PL a to PL e) call for figures, not just hardware. For the Sistema calculation of your installation we supply MTTFd, B10d for electromechanical components, the diagnostic coverage DC of the built-in electronics and the FMEA.\u003c\/p\u003e\n\u003ch3\u003eVersions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLREA load washer\u003c\/strong\u003e — low-profile, fitted under the bolt head or nut, for preload and clamping forces. 10 to 300 kN, bolt sizes M6 to M48, 17-4 PH stainless steel, protection class IP66; on request in a version with SIL 2 to IEC 61508-2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith the other designs the two-channel version is an order option and therefore not listed as a separate item. If you need a particular design for a safety function — \u003ca href=\"\/en\/collections\/kraftmessbolzen\"\u003eload pin\u003c\/a\u003e, \u003ca href=\"\/en\/collections\/zugmesslaschen-kraftmesslaschen\"\u003etension link\u003c\/a\u003e, load cell — just ask: we \u003ca href=\"\/en\/pages\/kundenspezifische-kraftaufnehmer-kraftmessdosen\"\u003edesign the spring element with two channels\u003c\/a\u003e and supply the reliability figures with it.\u003c\/p\u003e\n\u003ch3\u003eWhat goes with it\u003c\/h3\u003e\n\u003cp\u003eYou will find the evaluation under \u003ca href=\"\/en\/collections\/messelektronik-sil-pl\"\u003eMeasurement Electronics SIL \/ PL\u003c\/a\u003e — amplifiers with two galvanically isolated outputs and the programmable safety controller to go with them. Architecture, reliability figures and typical applications are explained on the page \u003ca href=\"\/en\/pages\/funktionale-sicherheit-sil-pl\"\u003eFunctional Safety SIL | PL\u003c\/a\u003e. The complete range is in the \u003ca href=\"\/en\/collections\/waegezellen-kraftaufnehmer\"\u003eload cells \u0026amp; force transducers\u003c\/a\u003e overview.\u003c\/p\u003e","products":[{"product_id":"lrea-kraftmessring-vollbruecke-in-4-leiter-technik-ip66","title":"LREA force measuring ring, 4-wire full bridge, IP66","description":"\u003cp\u003eThe \u003cstrong\u003eLREA\u003c\/strong\u003e is a low-profile force transducer ring for compressive force measurements.\u003c\/p\u003e\n\u003cp\u003eIt is placed under the screw head or nut and is intended for monitoring preload and clamping forces, including in safety-critical applications.\u003c\/p\u003e\n\u003cp\u003eThe rated load range extends from \u003cstrong\u003e10 kN to 300 kN\u003c\/strong\u003e, optionally in kilograms from \u003cstrong\u003e100 kg to 3,000 kg\u003c\/strong\u003e, with screw sizes from \u003cstrong\u003eM6 to M48\u003c\/strong\u003e. The total error is \u003cstrong\u003e≤ ±0.5 % FS\u003c\/strong\u003e, non-linearity and hysteresis are each \u003cstrong\u003e≤ ±0.35 % FS\u003c\/strong\u003e, repeatability is \u003cstrong\u003e≤ ±0.1 % FS\u003c\/strong\u003e, and creep is \u003cstrong\u003e≤ ±0.2 % FS\u003c\/strong\u003e over 30 minutes. The rated output is \u003cstrong\u003e1.0 mV\/V ±2.0 %\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe material is stainless steel \u003cstrong\u003e17-4 PH \/ 1.4542\u003c\/strong\u003e, with protection class \u003cstrong\u003eIP66\u003c\/strong\u003e according to IEC 60529. The measuring bridge is a \u003cstrong\u003eWheatstone full bridge in 4-wire technology\u003c\/strong\u003e with \u003cstrong\u003e375 or 750 Ω\u003c\/strong\u003e input resistance and \u003cstrong\u003e370 or 700 Ω\u003c\/strong\u003e output resistance; the insulation resistance is \u003cstrong\u003e≥ 500 MΩ at 100 V\u003c\/strong\u003e, the excitation voltage is \u003cstrong\u003e\u0026lt; 15 V\u003c\/strong\u003e. The cable is \u003cstrong\u003e4 m\u003c\/strong\u003e long. The compensated temperature range is from \u003cstrong\u003e-10 °C to +40 °C\u003c\/strong\u003e, the operating temperature range from \u003cstrong\u003e-20 °C to +60 °C\u003c\/strong\u003e. The cell complies with \u003cstrong\u003eCE, RoHS and REACH\u003c\/strong\u003e; upon request, \u003cstrong\u003eISO-17025 calibration\u003c\/strong\u003e, an \u003cstrong\u003eATEX\/IECEx\u003c\/strong\u003e version according to \u003cstrong\u003eEx ia IIC T6\u003c\/strong\u003e and \u003cstrong\u003eEx tb IIIC Db T85 °C\u003c\/strong\u003e, and a version with \u003cstrong\u003eSIL 2\u003c\/strong\u003e according to IEC 61508-2 are available.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eLow-profile force transducer ring for screw forces\u003c\/li\u003e\n\n\u003cli\u003eRated loads from 10 kN to 300 kN, screw sizes M6 to M48\u003c\/li\u003e\n\n\u003cli\u003eTotal error ≤ ±0.5 % FS\u003c\/li\u003e\n\n\u003cli\u003eStainless steel 17-4 PH \/ 1.4542\u003c\/li\u003e\n\n\u003cli\u003eProtection class IP66 according to IEC 60529\u003c\/li\u003e\n\n\u003cli\u003eWheatstone full bridge in 4-wire technology\u003c\/li\u003e\n\n\u003cli\u003eOptional ATEX\/IECEx according to Ex ia IIC T6\u003c\/li\u003e\n\n\u003cli\u003eOptional SIL 2 according to IEC 61508-2\u003c\/li\u003e\n\n\u003cli\u003eOptional with ISO-17025 calibration\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"100 kg","offer_id":56766837391686,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"200 kg","offer_id":56766837424454,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"400 kg","offer_id":56766837457222,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"800 kg","offer_id":56766837489990,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"1 t","offer_id":56766837522758,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"1.2 tons","offer_id":56766837555526,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"1.6 tonnes","offer_id":56766837588294,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"2 t","offer_id":56766837621062,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"3 tons","offer_id":56766837653830,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"10 kN","offer_id":56766837686598,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"20 kN","offer_id":56766837719366,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"40 kN","offer_id":56766837752134,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"80 kN","offer_id":56766837784902,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"100 kN","offer_id":56766837817670,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"120 kN","offer_id":56766837850438,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"160 kN","offer_id":56766837883206,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"200 kN","offer_id":56766837915974,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"300 kN","offer_id":56766837948742,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/LREA.webp?v=1782213526"},{"product_id":"lklf-drucklast-waegezelle","title":"LKLF compression load cell","description":"\u003cp\u003e\u003cstrong\u003eLKLF Compression Load Cell\u003c\/strong\u003e – low-profile force transducer made of 17-4PH stainless steel for very high loads, with redundant measuring bridges for safety systems.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003eRated capacity 200,000–750,000 kg (2,000–7,500 kN)\u003c\/li\u003e\n\n\u003cli\u003eTotal error ≤ ±0.10 % FS\u003c\/li\u003e\n\n\u003cli\u003eProtection class IP68, 17-4PH (1.4542) stainless steel housing\u003c\/li\u003e\n\n\u003cli\u003eRated output 2 mV\/V ±0.1 %\u003c\/li\u003e\n\n\u003cli\u003eSafe overload 150 % FS, ultimate overload 300 % FS\u003c\/li\u003e\n\n\u003cli\u003eOperating temperature range −30…+90 °C\u003c\/li\u003e\n\n\u003cli\u003eCE, REACH, ROHS; ATEX, IECEx, ISO-17025 calibration on request\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon Shop","offers":[{"title":"200,000 kg","offer_id":57423717630278,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"300,000 kg","offer_id":57423717663046,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"500,000 kg","offer_id":57423717695814,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"750,000 kg","offer_id":57423717728582,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"2000 kN","offer_id":57423717761350,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"3000 kN","offer_id":57423717794118,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"5000 kN","offer_id":57423717826886,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true},{"title":"7500 kN","offer_id":57423717859654,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/LKLF_02_2048.svg?v=1790068319"}],"url":"https:\/\/octogon-sensors.com\/en\/collections\/load-cells-sil-pl.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}