Giersch Ionization electrode 47-90-26588

The Giersch ionization electrode 47-90-26588 is a flame sensing probe used for continuous flame monitoring in gas burners. It is designed for the Giersch MG20-LN burner series, including low-NOx versions, with power up to 1350 kW. The electrode features a body made of heat-resistant corrosion-resistant alloys and high-temperature ceramic insulation, with a plug connection for the ignition cable. It comes with a mounting bracket for precise installation in the flame zone and is resistant to soot and extreme temperatures.

When selecting a replacement ionization electrode, the overall length, bend, diameter of the ceramic insulator, gap between the electrode tip and burner earth, and mounting flange shape must match the existing part exactly. These electrodes are designed for specific burner series, so physical geometry is critical. Mounting forms include bracket or flange types, and the electrode must be positioned correctly in the flame zone. Before ordering, compare the old electrode's dimensions and connection type with the new one.

Common failure modes for ionization electrodes include eroded or blunted tips, cracked ceramic insulators, sooting that bridges the gap, and a gap that has drifted out of specification. These issues can lengthen ignition time or cause loss of flame signal, leading to burner shutdown. Regular inspection and replacement at recommended intervals help maintain flame proving.