De Dietrich 95365487 sensor VF40 SIEMENS

De Dietrich 95365487 sensor VF40 SIEMENS, also listed as catalogue article 336.208.009, is a sensor component intended for use in boiler and heating systems. Parts of this type form part of the temperature sensing loop that reports thermal conditions to the control board. In a typical installation, such sensors monitor flow temperature, return temperature, cylinder temperature, or outdoor temperature. The signal from the sensor allows the controller to modulate burner output and manage system operation. When selecting a replacement sensor, the key parameters are the resistance characteristic (for example 10 kΩ or 12 kΩ at 25 °C), the probe form (immersion, clamp-on, or sleeve), and the cable length and connector type. For thermostats, the switching point and reset type also matter. Common failure modes include a drifting resistance characteristic, which causes incorrect modulation, a broken cable, or poor thermal contact between a clamp-on probe and the pipe. This article is identified by the manufacturer codes 95365487 and 336.208.009. Before ordering, verify that the resistance curve and physical configuration match the original part in your system. Always check the probe type and connection details to ensure a direct replacement.