Brahma Flame sensor UV2/N 18210070

The Brahma UV2/N flame sensor, SKU 18210070, is a UV-type detector designed for use on oil and industrial burners. It operates on the principle of UV detection, with a UV photocell as the sensing element. This sensor is intended for applications where the flame is luminous and requires a direct line of sight to the combustion zone. It is typically paired with a burner control that expects a UV signal during the flame-proving phase of the ignition sequence.

When selecting a replacement UV flame sensor of this kind, verify that the detection principle (UV, IR, or ionisation), spectral range, and response time match the original. The cable length, connector type, and mounting sleeve dimensions must also correspond to the existing installation. Ensure the sensor is positioned to see the flame core and that the burner control is compatible with the UV output.

Common failure modes for UV flame sensors include a contaminated quartz window that blocks the UV signal, an aged photocell producing a weak output, or a broken sheath exposing internal electronics to heat and moisture. When such failures occur, the burner may fail to prove flame during ignition, leading to lockout. Check the sensor window for cleanliness and integrity, and verify the photocell output.