{"product_id":"testo-no-replacement-sensor-low-0-300ppm-0390-0077","title":"Testo NO Replacement Sensor, Low 0-300 ppm","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis Testo 0390 0077 NO replacement sensor is designed to keep your Testo 335 or 350 combustion analyser running true. It's a critical component for ensuring you get accurate nitrogen monoxide readings, which is essential for environmental compliance and optimizing system efficiency.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eWhen you're out on a boiler service or tuning up industrial burners, you need confidence in your readings. Having a fresh, reliable sensor like this on hand means you won't be caught out by fluctuating or inaccurate NO levels, saving you time and callbacks.\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 boiler service and maintenance teams\u003c\/li\u003e\n\u003cli\u003eEnvironmental compliance officers monitoring emissions\u003c\/li\u003e\n\u003cli\u003eAnyone using Testo 335 or 350 analysers for NO measurement\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 nitrogen monoxide sensor is specifically designed for use with the Testo 335 and Testo 350 series combustion analysers. It provides accurate readings within a low 0-300 ppm range.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eIf 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\u003eDirect Replacement:\u003c\/strong\u003e Engineered as a straightforward swap-out for the existing NO sensor in compatible Testo analysers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate NO Measurement:\u003c\/strong\u003e Provides precise detection of nitrogen monoxide within its specified range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Range Capability:\u003c\/strong\u003e Specifically calibrated for a 0-300 ppm (parts per million) measurement range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential for Compliance:\u003c\/strong\u003e Helps ensure your combustion analyser meets the accuracy needed for emission regulations.\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;\"\u003eGas Type\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eNitrogen Monoxide (NO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e0 to 300 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eCompatible Analysers\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eTesto 335, Testo 350\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\u003eOne Testo 0390 0077 NO Replacement Sensor, Low 0-300 ppm\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 335 or 350 analyser is completely powered off and disconnected from any probes before beginning sensor replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess Sensor Bay:\u003c\/strong\u003e Follow the specific instructions in your analyser's user manual to safely open the housing and access the sensor bay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Sensor:\u003c\/strong\u003e Carefully disconnect the wiring and gently remove the old NO sensor. Note its orientation for correct installation of the new one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Sensor:\u003c\/strong\u003e Insert the new Testo 0390 0077 sensor, ensuring it seats correctly and all electrical connections are firmly reattached.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecalibrate:\u003c\/strong\u003e Close the analyser and power it on. It's crucial to perform a fresh calibration according to the manufacturer's instructions after any sensor replacement to maintain accuracy.\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 sensor is designed for specific Testo 335 and 350 analysers only; it will not work with other models.\u003c\/li\u003e\n\u003cli\u003eAlways refer to your analyser's operating manual for precise sensor replacement and calibration procedures.\u003c\/li\u003e\n\u003cli\u003eHandle all sensors with care to avoid damage to the sensitive detection elements.\u003c\/li\u003e\n\u003cli\u003eEnsure the analyser is cooled and powered off before attempting any internal maintenance.\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;\"\u003eWhen your job relies on pinpoint accuracy for compliance and efficiency, having a spare NO sensor tucked away is smart. You don't want to lose a day on-site because of a sensor that's drifted or failed.\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 NO sensor with other essential Testo analyser spares like particulate filters, various probes, and calibration gases. Check out our range of combustion analysis equipment for a full suite of tools.\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 NO sensor compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This Testo 0390 0077 NO replacement sensor is specifically designed for use with the Testo 335 and Testo 350 series combustion analysers. It will not function with other Testo models.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the measurement range of this NO sensor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This nitrogen monoxide sensor provides a low measurement range of 0 to 300 ppm (parts per million). This is suitable for applications requiring precise detection of lower NO concentrations.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What do I need to do after replacing the NO sensor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"After installing the new Testo 0390 0077 sensor, it is crucial to perform a full calibration of your Testo 335 or 350 analyser. Always refer to your analyser's user manual for the exact calibration procedure to ensure accurate readings.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Testo","offers":[{"title":"Default Title","offer_id":43785700999227,"sku":"0390 0077","price":1897.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/xtesto-0390-0077-no-replacement-sensor.jpg.pagespeed.ic.24fdNK_-fJ.jpg?v=1784012962","url":"https:\/\/www.hvacshop.com.au\/products\/testo-no-replacement-sensor-low-0-300ppm-0390-0077","provider":"HVAC Supply Shop","version":"1.0","type":"link"}