{"product_id":"hayward-cat-controller-ph-sensor-probe-24-inch-cable","title":"Hayward CAT Controller pH Sensor Probe 24 Inch Cable","description":"\u003c!-- more --\u003e\n\u003cstyle\u003e\n  .product-description {\n    color: inherit;\n    line-height: 1.75;\n    max-width: 860px;\n  }\n  .product-description h2 {\n    font-size: 1.2rem;\n    font-weight: 700;\n    margin: 2rem 0 0.6rem;\n    border-bottom: 2px solid #cce0ff;\n    padding-bottom: 0.3rem;\n  }\n  .product-description h3 {\n    font-size: 1rem;\n    font-weight: 700;\n    margin: 1.5rem 0 0.4rem;\n  }\n  .product-description p { margin: 0 0 1rem; }\n  .product-description ul { margin: 0 0 1rem 1.4rem; padding: 0; }\n  .product-description ul li { margin-bottom: 0.4rem; }\n  .product-description .spec-list {\n    margin: 1rem 0 1.5rem;\n    font-size: 0.95rem;\n    border: 1px solid #c4d9f0;\n    border-radius: 4px;\n    overflow: hidden;\n  }\n  .product-description .spec-row {\n    display: flex;\n    flex-wrap: wrap;\n    border-bottom: 1px solid #c4d9f0;\n  }\n  .product-description .spec-row:last-child { border-bottom: none; }\n  .product-description .spec-key {\n    flex: 0 0 38%;\n    background-color: #e8f1fb;\n    font-weight: 700;\n    padding: 0.5rem 0.75rem;\n    box-sizing: border-box;\n  }\n  .product-description .spec-val {\n    flex: 1 1 62%;\n    padding: 0.5rem 0.75rem;\n    box-sizing: border-box;\n  }\n  .product-description .spec-row:nth-child(even) .spec-val { background-color: #f5f9ff; }\n  .product-description .spec-row:nth-child(even) .spec-key { background-color: #edf4fc; }\n  @media (max-width: 540px) {\n    .product-description .spec-key,\n    .product-description .spec-val { flex: 0 0 100%; }\n    .product-description .spec-key { padding-bottom: 0.2rem; }\n    .product-description .spec-val { padding-top: 0.2rem; }\n  }\n  .product-description .doc-links {\n    background-color: #f0f6ff;\n    border-left: 4px solid #0066cc;\n    padding: 0.75rem 1rem;\n    margin: 1.5rem 0;\n    border-radius: 0 4px 4px 0;\n  }\n  .product-description .doc-links h2 {\n    border-bottom: none;\n    margin: 0 0 0.4rem;\n    font-size: 1rem;\n    padding-bottom: 0;\n  }\n  .product-description .doc-links ul { margin: 0 0 0 1.2rem; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"product-description\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n  \u003cmeta itemprop=\"name\" content=\"Hayward CAT Controller pH Sensor Probe 24 Inch Cable Pool Controls\"\u003e\n  \u003cmeta itemprop=\"brand\" content=\"Hayward\"\u003e\n  \u003cmeta itemprop=\"category\" content=\"Pool Controls\"\u003e\n  \u003cmeta itemprop=\"sku\" content=\"W3PRO15-2\"\u003e\n\n  \u003cp itemprop=\"description\"\u003eHayward CAT Controller pH Sensor Probe, 24-inch cable (W3PRO15-2). OEM replacement pH electrode for Hayward CAT and HCC series chemical automation pool controls. 1\/2\" NPT ABS body, BNC connector. Designed for compact equipment rooms where controller and flow cell are in close proximity.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eSKU: W3PRO15-2\u003c\/li\u003e\n    \u003cli\u003eOEM pH replacement probe for Hayward CAT and HCC series controllers\u003c\/li\u003e\n    \u003cli\u003e24-inch cable for installations where the controller and flow cell are within close reach\u003c\/li\u003e\n    \u003cli\u003eCompatible with CAT1000, CAT3500, CAT4000, CAT5000, CAT5500, HCC1000, HCC2000\u003c\/li\u003e\n    \u003cli\u003eDirect replacement; same connector and port threading as factory-installed probe\u003c\/li\u003e\n    \u003cli\u003e1\/2\" NPT injection-molded ABS body; color-coded BNC connector\u003c\/li\u003e\n    \u003cli\u003eTwo-point calibration via CAT controller interface (pH 7.0 and 4.0 buffers)\u003c\/li\u003e\n    \u003cli\u003eDo not extend or splice the cable; added impedance distorts the pH signal\u003c\/li\u003e\n    \u003cli\u003eMeasure the routed cable path before ordering; use the 10-foot version if the run exceeds 22 inches\u003c\/li\u003e\n    \u003cli\u003eRecommended replacement interval: every 12 to 24 months\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHayward CAT Controller pH Probe (W3PRO15-2): OEM Replacement for CAT and HCC Series Pool Controls\u003c\/h2\u003e\n  \u003cp\u003eThe W3PRO15-2 is the factory pH sensor for Hayward CAT and HCC series chemical automation. It plugs directly into the controller's pH input with no adapters or modifications. The 24-inch cable suits compact equipment rooms where the flow cell and controller cabinet are side by side. Install in a flow cell or bypass sample cell on the pool return line, downstream of filtration and chemical injection points, for accurate continuous pH measurement.\u003c\/p\u003e\n\n  \u003ch2\u003e24-Inch Cable: Is It the Right Length?\u003c\/h2\u003e\n  \u003cp\u003eMeasure the actual routed cable path from the flow cell pH port to the controller's pH input before ordering. The 24-inch version is appropriate when that distance is 18 to 22 inches with service slack. For longer runs, use the 10-foot version. Never splice or extend the cable.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward CAT Controller pH Probe 24-Inch Specifications\u003c\/h2\u003e\n  \u003cdiv class=\"spec-list\"\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eSKU\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eW3PRO15-2\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eMeasurement\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003epH (potential of hydrogen)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCable Length\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e24 inches (2 feet)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eConnector\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eBNC (color-coded)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBody\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003e1\/2\" NPT injection-molded ABS\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCompatible Controllers\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCAT1000, CAT3500, CAT4000, CAT5000, CAT5500, HCC1000, HCC2000\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eCalibration\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eTwo-point (pH 7.0 and 4.0 buffer solutions) via controller interface\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eFlow cell or bypass sample cell on pool return line, after filtration\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eBest-Fit Installation\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eCompact equipment rooms; controller and flow cell in close proximity\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cdiv class=\"spec-key\"\u003eReplacement Interval\u003c\/div\u003e\n\u003cdiv class=\"spec-val\"\u003eEvery 12 to 24 months\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003ch3\u003eIs the 24-inch cable version the same probe as the 10-foot version?\u003c\/h3\u003e\n  \u003cp\u003eYes. Same sensing element, electrode technology, and BNC connector. The only difference is cable length.\u003c\/p\u003e\n\n  \u003ch3\u003eWhat calibration buffers do I need?\u003c\/h3\u003e\n  \u003cp\u003eUse fresh, unexpired NIST-traceable pH 7.0 and 4.0 buffer solutions. Expired buffers are a common cause of calibration error. After calibration, verify the controller's displayed pH against a handheld photometric test kit; agreement within 0.1 to 0.2 pH units is acceptable.\u003c\/p\u003e\n\n  \u003ch3\u003eHow should I store the probe during seasonal shutdown?\u003c\/h3\u003e\n  \u003cp\u003eStore in a manufacturer-recommended probe storage solution or pH 4.0 buffer in a sealed cap. Never store dry, and never store in distilled or deionized water.\u003c\/p\u003e\n\n  \u003ch3\u003eShould I replace the ORP probe at the same time?\u003c\/h3\u003e\n  \u003cp\u003eReplacing both probes in a single service visit is the most efficient approach. The matching ORP probe is available separately.\u003c\/p\u003e\n\n  \u003cdiv class=\"doc-links\" role=\"complementary\" aria-label=\"Hayward CAT Controller pH Sensor Probe 24-Inch Cable Manual and Warranty Info\"\u003e\n    \u003ch2\u003eHayward CAT Controller pH Probe 24-Inch Manual and Warranty Info\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-controller-ph-probe-24in-installation-guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation \u0026amp; Flow Cell Plumbing Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-controller-ph-probe-24in-calibration-procedure.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTwo-Point Calibration \u0026amp; Verification Procedure (PDF)\u003c\/a\u003e\u003c\/li\u003e\n      \u003cli\u003e\u003ca href=\"\/docs\/hayward-cat-series-probe-compatibility-and-cable-selection-guide.pdf\" target=\"_blank\" rel=\"noopener\"\u003eProbe Compatibility \u0026amp; Cable Length Selection Guide (PDF)\u003c\/a\u003e\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cscript type=\"application\/ld+json\"\u003e\n  {\n    \"@context\": \"https:\/\/schema.org\/\",\n    \"@type\": \"Product\",\n    \"name\": \"Hayward CAT Controller pH Sensor Probe 24 Inch Cable Pool Controls\",\n    \"brand\": { \"@type\": \"Brand\", \"name\": \"Hayward\" },\n    \"description\": \"OEM pH replacement probe for Hayward CAT and HCC series chemical automation pool controls. SKU W3PRO15-2. 24-inch cable, BNC connector, 1\/2\\\" NPT ABS body. Compatible with CAT1000, 3500, 4000, 5000, 5500, HCC1000, HCC2000. Two-point calibration. Recommended replacement every 12 to 24 months.\",\n    \"sku\": \"W3PRO15-2\",\n    \"category\": \"Pool Controls\",\n    \"offers\": {\n      \"@type\": \"Offer\",\n      \"availability\": \"https:\/\/schema.org\/InStock\",\n      \"priceCurrency\": \"USD\",\n      \"seller\": { \"@type\": \"Organization\", \"name\": \"Your Store Name\" }\n    }\n  }\n  \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48566385443033,"sku":"W3PRO15-2","price":429.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/3592\/7513\/files\/hayward-logo.jpg?v=1731006221","url":"https:\/\/nonstopswim.com\/products\/hayward-cat-controller-ph-sensor-probe-24-inch-cable","provider":"Nonstop Swim","version":"1.0","type":"link"}