{"product_id":"analog-output-module-yokogawa-sai533-h33","title":"Analog Output Module Yokogawa SAI533-H33","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSAI533-H33\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-reliability analog output safety module designed for the Yokogawa Electric Corporation ProSafe-RS Safety Instrumented System (SIS) platform.\u003c\/p\u003e\n\u003cp\u003eThis module is engineered to transmit\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eprecise 4–20 mA safety control signals\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto critical final control elements such as:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEmergency shutdown (ESD) valves\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSafety valve positioners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eActuator control devices\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFire \u0026amp; Gas (F\u0026amp;G) safety response equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe SAI533-H33 is designed for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efunctional safety applications up to SIL3\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewhen deployed in redundant architectures. Dual-redundant operation allows two modules to operate in parallel; if one fails, the other maintains output continuity to prevent process disturbance.\u003c\/p\u003e\n\u003cp\u003eEach channel is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eindividually galvanically isolated\u003c\/strong\u003e, preventing ground loop interference and protecting safety logic circuits from field-side electrical faults.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Designation\u003c\/td\u003e\n\u003ctd\u003eSAI533-H33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Function\u003c\/td\u003e\n\u003ctd\u003eSafety analog current output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Density\u003c\/td\u003e\n\u003ctd\u003e8 isolated output channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Output Range\u003c\/td\u003e\n\u003ctd\u003e1.25 mA – 23 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eSIL3 (in redundant ProSafe-RS configurations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Accuracy\u003c\/td\u003e\n\u003ctd\u003e±48 μA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Resistance\u003c\/td\u003e\n\u003ctd\u003e230 Ω – 600 Ω at 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Refresh Cycle\u003c\/td\u003e\n\u003ctd\u003e40 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Stability\u003c\/td\u003e\n\u003ctd\u003e±16 μA per 10°C temperature change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel and channel-to-ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART Support\u003c\/td\u003e\n\u003ctd\u003eYes (pass-through communication)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 mm × 124 mm × 32.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.34 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eSafety Application Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe SAI533-H33 is widely used in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOil refinery safety shutdown systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOffshore platform process protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChemical plant safety interlocks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFire \u0026amp; Gas detection response control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is particularly suited for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003evalve modulation during abnormal process conditions\u003c\/strong\u003e, helping maintain safe process isolation and controlled shutdown behavior.\u003c\/p\u003e\n\u003cp\u003eThe module is certified for deployment in hazardous area control cabinets, typically supporting\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eZone 2 \/ Division 2\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eenvironments when installed in compliant system enclosures.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the SAI533-H33 support HART communication?\u003c\/strong\u003e\u003cbr\u003eYes. The module supports HART signal superposition, allowing communication with smart field instruments for diagnostics, calibration, and asset monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the loop resistance is outside 230–600 Ω?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eToo high resistance → The module may not achieve full 20 mA output due to voltage saturation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eToo low resistance → The system may detect a diagnostic fault due to excessive current demand.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProper loop impedance design is essential for maintaining safety integrity performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs redundant deployment required for SIL3?\u003c\/strong\u003e\u003cbr\u003eYes. SIL3 safety integrity is typically achieved using redundant module architectures within ProSafe-RS safety configurations.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51818429153592,"sku":"SAI533-H33","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/SAI533-H33.jpg?v=1762911637","url":"https:\/\/www.automodulexpert.com\/bg\/products\/analog-output-module-yokogawa-sai533-h33","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}