{"product_id":"testo-no-sensor-exchangeable-filter-cartridge-0554-4150","title":"Testo NO Sensor Exchangeable Filter Cartridge","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Testo NO sensor replacement filter cartridge (SKU 0554 4150) is an essential spare part for anyone relying on a Testo 340 or Testo 350 emission analyser. It's designed to keep your Nitric Oxide sensor working accurately by blocking unwanted cross-sensitivity from Sulphur Dioxide (SO₂), ensuring your readings are precise.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eWhen you're doing boiler tuning, engine maintenance, or general industrial emissions testing, precise data is critical. A clean, correctly functioning filter means reliable results the first time, preventing costly re-runs or misdiagnoses on site.\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 performing combustion analysis\u003c\/li\u003e\n\u003cli\u003eIndustrial plant maintenance teams\u003c\/li\u003e\n\u003cli\u003eEngine tuners and mechanics\u003c\/li\u003e\n\u003cli\u003eAnyone using a Testo 340 or Testo 350 Emission Analyser\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 exchangeable filter cartridge is specifically engineered for use with Testo 340 and Testo 350 Emission Analysers only. Its primary function is to block the cross-sensitivity of SO₂, ensuring accurate NO readings. 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\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cstrong\u003eBlocks SO₂ Cross-Sensitivity:\u003c\/strong\u003e Ensures your NO sensor provides accurate data by preventing interference from Sulphur Dioxide.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cstrong\u003eGenuine Testo Part:\u003c\/strong\u003e Guarantees perfect fit and performance with compatible Testo analysers.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cstrong\u003eEasy to Exchange:\u003c\/strong\u003e Designed for quick and simple replacement in the field, minimising downtime.\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cstrong\u003eCompact and Lightweight:\u003c\/strong\u003e At just 6g, it's easy to carry spares without adding bulk to your kit.\u003c\/p\u003e\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;\"\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\n\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;\"\u003e6 g (0.21 oz.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e12.9 mm (0.51 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eDiameter (∅)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e29 mm (1.14 in.)\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;\"\u003eSilver oxide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eProduct Colour\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eWhite\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 Testo NO sensor replacement filter (SKU 0554 4150)\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\u003e\n\u003cstrong\u003ePower Down:\u003c\/strong\u003e Always ensure your Testo 340 or 350 analyser is powered off and disconnected from any power source before commencing work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess Sensor Bay:\u003c\/strong\u003e Refer to your analyser's manual for the correct procedure to open the sensor compartment. Handle with care.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Filter:\u003c\/strong\u003e Gently extract the used NO sensor filter. Note its orientation for correct installation of the new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Filter:\u003c\/strong\u003e Carefully insert the new Testo 0554 4150 filter, ensuring it seats correctly and securely within the housing. Avoid forcing it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble \u0026amp; Calibrate:\u003c\/strong\u003e Close the sensor compartment, reassemble your analyser, and then power it on. It's good practice to perform a fresh zeroing or calibration as per the Testo operating instructions after any sensor or filter replacement.\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\u003eOnly for use with Testo 340 and Testo 350 Emission Analysers. Do not attempt to use with other models or sensor types.\u003c\/li\u003e\n\u003cli\u003eHandle the filter cartridge carefully to prevent damage, as its integrity is crucial for accurate readings.\u003c\/li\u003e\n\u003cli\u003eEnsure the analyser is powered off and safely secured before opening sensor compartments for filter replacement.\u003c\/li\u003e\n\u003cli\u003eFollow all instructions in your Testo analyser's user manual for proper maintenance and filter exchange.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTradie Pro Tip\u003c\/h2\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;\"\u003eAlways carry a spare NO sensor filter for your Testo 340 or 350. It's a small part, but a blocked or degraded filter can throw off your readings and cost you time on site trying to troubleshoot what looks like a sensor issue. Better to have it on hand.\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 filter with a Testo 340 or Testo 350 Emission Analyser. Consider also grabbing spare probes and calibration gas to keep your entire setup accurate and ready for any job.\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 analysers is this filter compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This NO sensor filter cartridge (SKU 0554 4150) is designed exclusively for use with Testo 340 and Testo 350 Emission Analysers. It is not interchangeable with other Testo models or sensor types.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the primary function of this filter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The main purpose of this filter is to block Sulphur Dioxide (SO\\u2082) from interfering with the Nitric Oxide (NO) sensor. This helps maintain the accuracy and reliability of your emission readings, especially in environments where SO\\u2082 may be present.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the physical specifications of the filter?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The filter weighs 6 grams and measures 12.9 mm in length with a diameter of 29 mm. It features a silver oxide housing and comes in a white colour, making it a compact and easily identifiable component.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Testo","offers":[{"title":"Default Title","offer_id":43757168066619,"sku":"0554 4150","price":500.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/0554-4150-accessory-emission-005330_06bdfd35-e635-4828-9777-396a92827939.png?v=1783483960","url":"https:\/\/www.hvacshop.com.au\/products\/testo-no-sensor-exchangeable-filter-cartridge-0554-4150","provider":"HVAC Supply Shop","version":"1.0","type":"link"}