{"product_id":"testo-multi-hole-probe-shaft-7-inch-0-32-inch-diameter-0554-5763","title":"Testo Multi-hole Probe Shaft, 7-inch, 0.32-inch Diameter","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Testo multi-hole probe shaft is built for technicians who need precise mean CO readings from flue gases. It’s an essential accessory for combustion analysers, helping you dial in efficiency and meet regulatory standards on industrial or commercial systems.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eWhen you're commissioning a new boiler or fine-tuning an older one under varying loads, getting an accurate average CO is non-negotiable for safe, efficient operation. This shaft helps get the job done right across Australia's varied climate demands.\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\u003eCombustion analysis technicians\u003c\/li\u003e\n\u003cli\u003eBoiler and burner service specialists\u003c\/li\u003e\n\u003cli\u003eIndustrial HVAC and refrigeration maintenance teams\u003c\/li\u003e\n\u003cli\u003eAnyone needing averaged CO readings for system optimisation\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 multi-hole probe shaft is designed to integrate with compatible Testo combustion analysers that support external probes, specifically those requiring mean CO calculation capabilities. It connects to an existing probe handle and hose assembly. If you're running a different model, check fittings and specs before ordering, particularly for the 0.32-inch (approx. 8.1 mm) diameter.\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\u003eMulti-hole design:\u003c\/strong\u003e Ensures a representative average sample across the flue cross-section.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal length:\u003c\/strong\u003e 7-inch (approx. 177.8 mm) shaft is suitable for a range of flue diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact diameter:\u003c\/strong\u003e 0.32-inch (approx. 8.1 mm) for easy insertion into standard test ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated function:\u003c\/strong\u003e Specifically engineered for reliable mean CO calculation.\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\n\u003ctr\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eShaft Length\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e7 in. (approx. 177.8 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eShaft Diameter\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eØ 0.32 in. (approx. 8.1 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eMean CO calculation\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\u003e1x Testo Multi-hole Probe Shaft (7 in. long, Ø 0.32 in.)\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\u003eEnsure your Testo combustion analyser is properly calibrated and ready for use.\u003c\/li\u003e\n\u003cli\u003eConnect the multi-hole probe shaft securely to your compatible Testo analyser's probe handle and hose assembly.\u003c\/li\u003e\n\u003cli\u003eCarefully insert the probe into the flue gas sampling port, ensuring the multi-hole section is positioned correctly within the gas stream.\u003c\/li\u003e\n\u003cli\u003eAllow sufficient time for the probe to stabilise to the flue gas temperature before taking readings.\u003c\/li\u003e\n\u003cli\u003eFollow your analyser's specific instructions for initiating and completing a mean CO measurement cycle.\u003c\/li\u003e\n\u003cli\u003eAfter use, carefully withdraw the probe, allow it to cool, and clean any soot or debris from the shaft.\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 probe shaft is only for use with compatible Testo combustion analysers and probe handles.\u003c\/li\u003e\n\u003cli\u003eNot designed for use in highly corrosive or high-pressure gas streams beyond typical flue gas conditions.\u003c\/li\u003e\n\u003cli\u003eAlways monitor flue gas temperatures and operate within the specified limits of your analyser and probe assembly.\u003c\/li\u003e\n\u003cli\u003eWear appropriate Personal Protective Equipment (PPE), including heat-resistant gloves, when handling hot probes during or after measurements.\u003c\/li\u003e\n\u003cli\u003eAlways follow Australian standards and Safe Work guidance for combustion analysis.\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;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cstrong\u003eTradie Pro Tip:\u003c\/strong\u003e For best results with mean CO calculations, ensure your analyser is regularly serviced and calibrated. A clean probe, free of soot and debris, also makes a big difference to accuracy, especially when you're troubleshooting tricky combustion issues.\u003c\/p\u003e\n\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 this multi-hole probe shaft with a Testo 300 series combustion analyser and a suitable flue gas hose for a complete, accurate measurement setup. Consider an analyser calibration kit to keep your readings spot on.\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\": \"What Testo analysers is this probe shaft compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This multi-hole probe shaft is designed for compatible Testo combustion analysers that require mean CO calculation, typically from the Testo 300 series. Always check your analyser's manual for specific probe compatibility and required fittings before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the physical dimensions of this probe shaft?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The probe shaft is 7 inches (approximately 177.8 mm) long with a diameter of 0.32 inches (approximately 8.1 mm). These dimensions allow it to fit into many standard flue gas sampling ports.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why is a 'multi-hole' probe important for mean CO calculation?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A multi-hole probe takes samples from several points across the flue's cross-section simultaneously. This provides an averaged, more representative CO reading, which is crucial for accurately assessing combustion efficiency and ensuring compliance.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Testo","offers":[{"title":"Default Title","offer_id":43754976051259,"sku":"0554 5763","price":1006.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/testo-0554-5763-probe-shaft.png?v=1783407330","url":"https:\/\/www.hvacshop.com.au\/products\/testo-multi-hole-probe-shaft-7-inch-0-32-inch-diameter-0554-5763","provider":"HVAC Supply Shop","version":"1.0","type":"link"}