NTC 20 kOhm Temperature Probe for Solar Collector

The NTC Immersion Temperature Probe 20 kOhm It is a critical precision sensor, specifically designed to reliably monitor the temperature inside solar collectors. Its correct operation is the foundation of efficiency in any solar thermal energy system.

This component ensures the reading accuracy necessary for differential controllers (such as Vitosolic models) to determine the optimal time for heat transfer. It is an essential spare part for installers and maintenance technicians.

☀️ Key Benefits: Precise Measurement for Maximum Solar Efficiency

The accuracy of the 20 kOhm NTC sensor directly impacts the performance of your installation.

• Maximum Solar Efficiency: It allows the controller to accurately identify when the collector temperature is high enough to start the pump and maximize energy capture.

• Quick and Reliable Response: NTC (Negative Temperature Coefficient) technology provides a fast response to temperature changes, crucial in the primary solar circuit.

• Compatibility Standard: The value of 20 kOhm is the standard used by major manufacturers in the measurement of solar collectors, ensuring broad compatibility.

⚙️ Technical Characteristics of the NTC 20 kOhm Sensor

Designed for the demanding conditions of the primary solar circuit.

Application in Collectors

• Primary Function: It is the Collector Temperature Probe, an indispensable element for differential control.

• Immersion Installation: Although its final application is the collector, the sensor is immersion-type, intended to be placed in the sheath of the primary circuit (supply or return line) for direct and non-surface measurement.

Ready for Installation

• 2.5m cable included: It comes with a connection cable 2.5 meters in length, facilitating its positioning in the manifold or near the regulating valve.

• Direct Connection: The probe is delivered without connectorThis allows the installer to professionally carry out the wiring and connection to the terminals of the electronic regulator, ensuring optimal fixation.

📋 Technical Specifications

Essential details for verifying new spare parts and installations.

• Sensor Type: Negative Temperature Coefficient (NTC) Resistor

• Resistance Value: 20 kOhm (at 25°C)

• Application: Solar Collector Temperature Measurement (Collector Probe)

• Mounting Type: Immersion Probe

• Cable Length: 2.5 m (250 cm)

• Connection: Without connector (terminal connection required)

• Replacement: Compatible with systems that use 20 kOhm NTC solar regulators.

❓ Frequently Asked Questions

What is the risk of using a 10 kOhm NTC probe instead of a 20 kOhm NTC probe on the collector?

The risk is the inoperability or severe inefficiency of the system. The regulator reads the resistance and translates it into temperature.If you use a 10 kOhm NTC probe when the controller expects 20 kOhm, the temperature differential will be calculated incorrectly, which may cause the solar pump to fail to start or to start at inefficient times.

Is this probe resistant to the high temperatures reached in the solar collector?

Yes, this 20 kOhm NTC Collector probe is made of 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.

Why does it come without a connector if it's a spare part?

Direct terminal connection, without a pre-assembled connector, is the professional standard in many solar control systems. This allows the installer adjust cable length and ensure the highest quality of contact at the regulator terminal block, which is essential for an accurate signal in the electrical environment.

📞 Technical Support and Professional Assistance

Choosing the right probe is crucial. If you need to confirm the compatibility of this 20 kOhm NTC probe with your current regulator or have any questions about the wiring, our technical support team is available to assist you. Contact our experts to answer your installation and setup queries.