{"product_id":"testovent-417-flow-straightener-0554-4172","title":"Testovent 417 Flow Straightener","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThe Testovent 417 Flow Straightener is your go-to accessory for getting reliable airflow readings, especially on tricky swirl outlets. If you've ever tried to measure volume flow from a diffuser and got inconsistent numbers because of turbulent air, you know the struggle.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis unit helps redirect that chaotic air into a steady stream, making your vane anemometer readings accurate every time. It's built tough enough for regular use on site, ensuring your commissioning or maintenance reports are always based on solid data.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eBest For\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eHVAC technicians and installers\u003c\/li\u003e\n\u003cli\u003eCommissioning specialists\u003c\/li\u003e\n\u003cli\u003eService and maintenance teams\u003c\/li\u003e\n\u003cli\u003eAnyone needing accurate airflow measurements from swirl diffusers or grilles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis flow straightener is designed to be used with the Testo 417 Rotating Vane Anemometer, the Testo 440 Air Velocity and IAQ measuring instrument, and 100mm vane probes from the Testo 435 and Testo 480 series. It requires optional Testovent 417 measurement funnels to operate correctly. If you're running a different model, check fittings and specs before ordering.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate Readings:\u003c\/strong\u003e Corrects swirling airflow to ensure precise volume flow measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Works seamlessly with Testo 417, Testo 440, and 100mm vane probes for Testo 435\/480.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Data:\u003c\/strong\u003e Essential for obtaining consistent and repeatable measurement results on turbulent swirl outlets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Housing made from PA66 GF30% for trade-level resilience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 16px; margin-bottom: 20px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e554 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e370 x 190 x 210 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e0 to +50 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eHousing Material\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003ePA66 GF30%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eVolume Flow Measuring Range\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e0.1 to +200 m³\/h (preferred 0.1 to +100 m³\/h)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003e1 x Testovent 417 Flow Straightener (SKU: 0554 4172)\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eNote: Measurement funnels and anemometer are sold separately.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eUsing It on the Job\u003c\/h2\u003e\n\u003col style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eFirst, attach the Testovent 417 Flow Straightener to the correct Testovent measurement funnel (sold separately) for your application.\u003c\/li\u003e\n\u003cli\u003eNext, connect your compatible Testo vane anemometer, such as the Testo 417 or a Testo 440 with a 100mm vane probe, to the assembled straightener and funnel.\u003c\/li\u003e\n\u003cli\u003ePosition the measurement funnel firmly and flat against the swirl outlet or grille from which you need to take volume flow readings.\u003c\/li\u003e\n\u003cli\u003eTake your measurements using your Testo instrument. The flow straightener will ensure the air hitting the vane is uniform, preventing artificially high or low readings from turbulent air.\u003c\/li\u003e\n\u003cli\u003eUtilise your instrument's 'hold' function to capture stable readings once the flow has equalised.\u003c\/li\u003e\n\u003cli\u003eAfter use, carefully disconnect the components, clean them if necessary, and store them securely in their designated cases to prevent damage.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eLimitations \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli\u003eThis unit requires separate purchase of Testovent 417 measurement funnels and a compatible Testo vane anemometer.\u003c\/li\u003e\n\u003cli\u003eOnly designed for redirecting turbulent airflow for measurement; not for structural support or handling corrosive materials.\u003c\/li\u003e\n\u003cli\u003eAlways refer to the instruction manuals for both the flow straightener and your Testo measuring instrument for full operational and safety guidance.\u003c\/li\u003e\n\u003cli\u003eDo not operate outside the specified temperature range of 0 to +50 °C to avoid damage and ensure measurement accuracy.\u003c\/li\u003e\n\u003cli\u003eEnsure all connections are secure before taking readings to prevent air leakage and inaccurate data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003eTrying to get a stable volume flow reading from a swirl diffuser without one of these is a nightmare. You'll be chasing numbers all day. This tool is cheap insurance for accurate commissioning reports, especially on larger commercial fit-outs where airflow balance is critical.\u003c\/blockquote\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003ePair with the Testo 417 Rotating Vane Anemometer or the Testo 440 Air Velocity and IAQ Measuring Instrument, along with the Testovent 417 measurement funnels, for a complete volume flow measurement setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which Testo instruments are compatible with this flow straightener?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Testovent 417 Flow Straightener works with the Testo 417 Rotating Vane Anemometer and the Testo 440 Air Velocity and IAQ measuring instruments. It can also be used with 100mm vane probes from the Testo 435 and Testo 480 series.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are the measurement funnels included with the Testovent 417?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No, the measurement funnels, such as the Testovent 417 funnel set, are optional accessories and need to be purchased separately. This SKU (0554 4172) is for the flow straightener unit only.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the primary benefit of using a flow straightener for volume flow measurements?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The main benefit is achieving reliable and accurate volume flow measurements at swirl outlets. It converts turbulent, swirling airflow into a uniform, laminar flow, preventing false readings that can occur when swirling air directly impacts a vane anemometer.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Testo","offers":[{"title":"Default Title","offer_id":43799308664891,"sku":"0554 4172","price":429.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/0554-4172-accessory-velocity-004248_b98be6b8-b92f-4cba-aae6-51a5febe7e86.jpg?v=1784272700","url":"https:\/\/www.hvacshop.com.au\/products\/testovent-417-flow-straightener-0554-4172","provider":"HVAC Supply Shop","version":"1.0","type":"link"}