{"product_id":"sonda-de-temperatura-ntc-20-kohm-para-colector-solar","title":"NTC 20 kOhm Temperature Sensor for Solar Collector","description":"\u003cp\u003eThe \u003cb\u003eNTC 20 kOhm Immersion Temperature Sensor\u003c\/b\u003e is a critical precision sensor, specifically designed to reliably monitor the temperature inside solar collectors. Its proper operation is the foundation of efficiency in any solar thermal energy system.\u003c\/p\u003e\n\u003cp\u003eThis component ensures the reading accuracy required for differential controllers (such as Vitosolic models) to determine the optimal moment for heat transfer. It is an essential spare part for installers and maintenance technicians.\u003c\/p\u003e\n\u003ch3\u003e☀️ Key Benefits: Precise Measurement for Maximum Solar Efficiency\u003c\/h3\u003e\n\u003cp\u003eThe precision of the NTC 20 kOhm sensor directly impacts the performance of your installation.\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMaximum Solar Efficiency:\u003c\/b\u003e Allows the controller to accurately identify when the collector temperature is high enough to start the pump and maximize energy harvesting.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eFast and Reliable Response:\u003c\/b\u003e NTC (Negative Temperature Coefficient) technology provides a rapid response to temperature changes, which is crucial in the solar primary circuit.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eCompatibility Standard:\u003c\/b\u003e The 20 kOhm value is the standard used by major manufacturers for measuring solar collectors, ensuring broad compatibility.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003e⚙️ Technical Features of the NTC 20 kOhm Sensor\u003c\/h3\u003e\n\u003cp\u003eDesigned for the demanding conditions of the primary solar circuit.\u003c\/p\u003e\n\u003ch4\u003eCollector Application\u003c\/h4\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003ePrimary Function:\u003c\/b\u003e It is the \u003cb\u003eCollector Temperature Sensor\u003c\/b\u003e, an indispensable element for differential control.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eImmersion Installation:\u003c\/b\u003e Although its final application is the collector, the sensor is an immersion type, intended to be placed in the primary circuit thermowell (flow or return line) for direct, non-surface measurement.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation-Ready\u003c\/h4\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003e2.5m Cable Included:\u003c\/b\u003e Supplied with a \u003cb\u003e2.5-meter long\u003c\/b\u003e connection cable, facilitating its positioning on the collector or near the control valve.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eDirect Connection:\u003c\/b\u003e The probe is delivered \u003cb\u003ewithout a connector\u003c\/b\u003e. This allows the installer to perform the wiring and connection to the electronic controller terminals professionally, ensuring an optimal connection.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e📋 Technical Specifications\u003c\/h3\u003e\n\u003cp\u003eEssential details for verifying spare parts and new installations.\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eSensor Type:\u003c\/b\u003e Negative Temperature Coefficient (NTC) resistance\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eResistance Value:\u003c\/b\u003e 20 kOhm (at 25\u003cspan class=\"math-inline\" data-math=\"{^\\circ}\\text{C}\"\u003eºC\u003c\/span\u003e)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eApplication:\u003c\/b\u003e Solar Collector temperature measurement (Collector Sensor)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMounting Type:\u003c\/b\u003e Immersion sensor\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eCable Length:\u003c\/b\u003e 2.5 m (250 cm)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eConnection:\u003c\/b\u003e Without connector (terminal connection required)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eReplacement:\u003c\/b\u003e Compatible with systems using NTC 20 kOhm solar controllers.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e❓ Frequently Asked Questions \u003c\/h3\u003e\n\u003ch4\u003eWhat is the risk of using an NTC 10 kOhm probe instead of an NTC 20 kOhm in the collector?\u003c\/h4\u003e\n\u003cp\u003eThe risk is the \u003cb\u003einoperability or severe inefficiency\u003c\/b\u003e of the system. The controller reads the resistance and translates it into temperature. If you use an NTC 10 kOhm probe when the controller expects 20 kOhm, the temperature differential will be calculated erroneously, which may cause the solar pump not to start or to start at inefficient times.\u003c\/p\u003e\n\u003ch4\u003eIs this probe resistant to the high temperatures reached in the solar collector?\u003c\/h4\u003e\n\u003cp\u003eYes, this NTC 20 kOhm Collector probe is manufactured with heat-resistant materials, designed to withstand the stagnation temperatures (maximum temperature) that can be generated in solar collectors during the summer, ensuring a long service life under extreme conditions.\u003c\/p\u003e\n\u003ch4\u003eWhy does it come without a connector if it is a spare part?\u003c\/h4\u003e\n\u003cp\u003eDirect connection to terminals, without a pre-assembled connector, is the professional standard in many solar control systems. This allows the installer to \u003cb\u003eadjust the cable length\u003c\/b\u003e and ensure maximum contact quality at the controller terminal block, which is fundamental for a precise signal in the electrical environment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e📞 Technical Support and Professional Assistance\u003c\/h3\u003e\n\u003cp\u003eChoosing the correct probe is essential. If you need to confirm the compatibility of this NTC 20 kOhm probe with your current controller or have questions about wiring, our technical support team is at your disposal. \u003cb\u003eContact our experts\u003c\/b\u003e to resolve your installation and commissioning queries.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":56181651505496,"sku":"VI-7831913","price":118.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0015\/4592\/8792\/files\/VIESSMANN-Sonda-temperatura-inmersion-NTC-00.webp?v=1762947240","url":"https:\/\/q-tech.es\/en-en\/products\/sonda-de-temperatura-ntc-20-kohm-para-colector-solar","provider":"Q-Tech ® ","version":"1.0","type":"link"}