{"id":724,"date":"2026-09-11T17:00:10","date_gmt":"2026-09-11T09:00:10","guid":{"rendered":"https:\/\/brt-testing.com\/?post_type=product&p=724"},"modified":"2026-09-23T14:15:43","modified_gmt":"2026-09-23T06:15:43","slug":"intelligent-automatic-touch-screen-oxygen-index-tester","status":"publish","type":"product","link":"https:\/\/brt-testing.com\/de\/product\/intelligent-automatic-touch-screen-oxygen-index-tester\/","title":{"rendered":"JYZS-20 Intelligent Automatic Touch Screen Oxygen Index Tester"},"content":{"rendered":"

<\/p>\n

The JYZS-20 Fully Automatic Oxygen Index Tester<\/strong> is a top-tier, touch-screen-controlled flammability testing system designed to determine the Limiting Oxygen Index (LOI \/ OI) of polymers, plastics, textiles, rubber, and building components. Engineered in strict compliance with ISO 4589-2<\/strong>, ASTM D2863<\/strong>, BS 2782-1 (Method 141)<\/strong>, NES 715<\/strong>, and national standards GB\/T 2406<\/strong> and GB\/T 5454<\/strong>, this apparatus provides automated gas mixing without manual needle-valve tweaking.<\/p>\n

Featuring a stepper-driven proportional valve with closed-loop concentration correction, an imported high-precision oxygen sensor (0\u2013100% range, \u00b10.1% resolution), a standard 500 mm \u00d7 \u226575 mm glass combustion column, and automated 40 \u00b1 2 mm\/s gas flow velocity control, this advanced Automated Limiting Oxygen Index (LOI) Apparatus<\/strong> eliminates measurement drift and ensures uncompromised data integrity for polymer producers, cable manufacturers, and third-party testing laboratories.<\/p>\n

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Fully Automatic Oxygen Index Tester Compliance & Standards<\/h3>\n

This closed-loop automated LOI testing system enables accredited laboratories to perform formal limiting oxygen index evaluations across global standards:<\/p>\n\n\n\n\n\n\n\n\n
Standard Code<\/th>\nStandard Title & Scope<\/th>\nPrimary Testing Application<\/th>\n<\/tr>\n<\/thead>\n
ISO 4589-2<\/strong><\/td>\nPlastics \u2014 Determination of burning behaviour by oxygen index \u2014 Part 2: Ambient-temperature test<\/td>\nInternational benchmark method for evaluating the flammability of rigid and flexible polymers at room temperature<\/td>\n<\/tr>\n
ASTM D2863<\/strong><\/td>\nStandard test method for measuring the minimum oxygen concentration to support candle-like combustion of plastics<\/td>\nNorth American standard for determining oxygen index across plastic resins, insulating compounds, and films<\/td>\n<\/tr>\n
BS 2782-1 (Method 141) & NES 715<\/strong><\/td>\nMethods of testing plastics \u2014 Oxygen index & Naval Engineering Standard for material flammability<\/td>\nBritish and military-grade qualification for defense, naval vessel interior materials, and industrial plastics<\/td>\n<\/tr>\n
GB\/T 2406 & GB\/T 5454<\/strong><\/td>\nPlastics and Textiles \u2014 Determination of burning behaviour by oxygen index<\/td>\nMandatory Chinese national standards for plastic sheet, cellular foam, cable jacketing, and textile flame retardancy<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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Technological Features of JYZS-20 Automatic LOI Tester<\/h3>\n
    \n
  • Closed-Loop Automatic Concentration & Flow Control:<\/strong> Touchscreen input instantly commands a stepper-driven proportional valve to adjust O\u2082\/N\u2082 ratios. The system automatically corrects real-time oxygen drift during combustion.<\/li>\n
  • High-Precision Imported Oxygen Sensor:<\/strong> Direct digital display of O\u2082 percentage with \u00b10.1% resolution and fast response time (<5 s), eliminating complex manual calculations.<\/li>\n
  • Standardized Column Flow & Velocity Dynamics:<\/strong> Maintains a constant gas velocity of 40 \u00b1 2 mm\/s inside the 500 mm (H) \u00d7 \u226575 mm (ID) glass combustion column across 0\u201320 L\/min flow ranges.<\/li>\n
  • Versatile Dual Specimen Mounting Systems:<\/strong> Includes both self-supporting rigid clamps (for thick plastics, boards, and timber) and non-self-supporting frame clamps (for thin films, flexible foams, and textiles).<\/li>\n
  • Precision Propane\/Butane Ignition System:<\/strong> Fitted with an \u00d82 \u00b1 1 mm metal burner nozzle capable of delivering an adjustable 5 mm to 60 mm ignition flame (standard setting: 16 \u00b1 4 mm).<\/li>\n<\/ul>\n
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    <\/p>\n

    Technical Specifications of JYZS-20 Automatic Oxygen Index Tester<\/h3>\n\n\n\n\n\n\n\n\n\n\n
    Governing Test Standards<\/strong><\/td>\nISO 4589-2, ASTM D2863, BS 2782-1, NES 715, GB\/T 2406, GB\/T 5454<\/td>\n<\/tr>\n
    Oxygen Concentration Measurement Range<\/strong><\/td>\n0 to 100% O\u2082; Resolution: \u00b10.1%; Response time: <5 s<\/td>\n<\/tr>\n
    Glass Combustion Column Dimensions<\/strong><\/td>\nInternal diameter \u2265 75 mm; Height: 500 mm<\/td>\n<\/tr>\n
    Gas Flow Velocity in Column<\/strong><\/td>\n40 \u00b1 2 mm\/s; Total flow adjustment: 0\u201320 L\/min (0\u20131200 L\/h)<\/td>\n<\/tr>\n
    Igniter Nozzle & Flame Geometry<\/strong><\/td>\nNozzle inner diameter: \u00d82 \u00b1 1 mm; Flame length: 16 \u00b1 4 mm (adjustable 5\u201360 mm)<\/td>\n<\/tr>\n
    Required Gas Supply (User-Provided)<\/strong><\/td>\nGaseous O\u2082 and N\u2082 (purity >99%); Cylinder pressure regulators: 0.2 MPa; Operating inlet pressure: 0.1\u20130.15 MPa<\/td>\n<\/tr>\n
    Specimen Clamping Options<\/strong><\/td>\nSelf-supporting clamp (rigid samples) & Non-self-supporting frame (flexible\/textile samples)<\/td>\n<\/tr>\n
    Operating Conditions & Power<\/strong><\/td>\nAmbient temp: -10 \u00b0C to 45 \u00b0C; RH <85%; AC 220 V \u00b1 10%, 50 Hz, 100 W<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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    <\/p>\n

    System Architecture & Testing Workflow of JYZS-20 Oxygen Index Tester<\/h3>\n

    Standardized Testing Workflow:<\/strong><\/p>\n

      \n
    1. Mount the rigid or flexible specimen into the designated holder and position it vertically along the axis of the combustion column.<\/li>\n
    2. Select the target oxygen concentration (e.g., 21.0%) on the full-color touchscreen.<\/li>\n
    3. The closed-loop system automatically modulates the proportional valve to adjust O\u2082\/N\u2082 mixing until flow stabilizes at 40 \u00b1 2 mm\/s.<\/li>\n
    4. Ignite the propane igniter (flame length 16 \u00b1 4 mm) and insert it from the top of the column to ignite the upper tip of the specimen.<\/li>\n
    5. Observe flame propagation and burning time; step the oxygen concentration up or down until the precise Limiting Oxygen Index (LOI) threshold is established.<\/li>\n<\/ol>\n

      Target Customer Applications:<\/strong><\/p>\n

        \n
      • Polymer resin manufacturers, masterbatch formulators, and compounders (PP, ABS, PVC, PE, PU).<\/li>\n
      • Wire and cable jacketing, electrical insulation, and connector component manufacturers.<\/li>\n
      • Flame-retardant textile mills, technical fabrics, and protective garment testing centers.<\/li>\n
      • Third-party fire research institutes and ISO 17025 certified testing laboratories.<\/li>\n<\/ul>\n
        \n

        <\/p>\n

        JYZS-20 Fully Automatic Oxygen Index Tester FAQ<\/h3>\n

        Q1: What is the main advantage of a fully automatic oxygen index tester over conventional manual models?<\/h4>\n

        A:<\/strong> Traditional testers require manual tweaking of rotor flowmeters or needle valves, which causes drift during combustion. The JYZS-20 utilizes a stepper-driven proportional valve and closed-loop control to automatically maintain exact target oxygen concentrations and column gas velocity without manual intervention.<\/p>\n

        Q2: What is Limiting Oxygen Index (LOI) and why is it important?<\/h4>\n

        A:<\/strong> LOI represents the minimum concentration of oxygen in an oxygen\/nitrogen mixture that will support candle-like combustion of a material. Since ambient air contains ~20.9% oxygen, materials with an LOI > 21% are harder to ignite in air, and materials with an LOI > 28% are considered flame-retardant.<\/p>\n

        Q3: Can this device test both rigid plastics and soft fabrics or thin films?<\/h4>\n

        A:<\/strong> Yes. The JYZS-20 includes two specialized holders: a self-supporting clamp for rigid plastics\/boards and a non-self-supporting frame clamp for thin films, flexible foams, and textiles.<\/p>","protected":false},"excerpt":{"rendered":"

        JYZS-20 Oxygen Index Tester<\/b> strictly complies with ISO 4589-2, ASTM D2863, BS 2782-1, NES 715, GB\/T 2406, GB\/T 5454 standards. Features automated touchscreen gas regulation, closed-loop concentration correction (\u00b10.1% accuracy), an imported 0\u2013100% oxygen sensor (<5s response), dual specimen holders for rigid\/flexible polymers, and a 40\u00b12mm\/s airflow combustion column for precise Limiting Oxygen Index (LOI) testing.<\/p>","protected":false},"featured_media":726,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[117],"product_cat":[24],"product_tag":[],"class_list":["post-724","product","type-product","status-publish","has-post-thumbnail","product_brand-brt-testing","product_cat-fire-flame-testing-equipment","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/product\/724","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/comments?post=724"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/media\/726"}],"wp:attachment":[{"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/media?parent=724"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/product_brand?post=724"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/product_cat?post=724"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/brt-testing.com\/de\/wp-json\/wp\/v2\/product_tag?post=724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}