5123132010 Schneider STP200-100 Hydronic Flow Thermo Element 100mm Rigid Stem 10k Ohm Curve Type 2

Behind the stem, a moulded, sealed transition separates wet metal from the cable, and the factory-fitted gland protects against condensation, dust, and wash-down spray. As a passive device, it draws no meaningful current, requires no firmware updates, and has no battery replacement schedule—the controller's measuring circuit supplies excitation and reads returning values.

Each unit is checked against a traceable temperature reference before packing, with documentation suitable for commissioning records, handover dossiers, and energy-audit evidence.

On primary and secondary heating mains, this probe provides the controller with a clean supply and return differential—the raw material for delta-T optimization and pump staging. These two functions represent where most savings in a hydronic system are achieved.

Equally suitable for chilled headers serving air-handling units, it enables stable readings that allow plant sequencing of chillers against genuine demand rather than fixed schedules.

With a stem length optimized for standard pockets yet compact enough for normal plant-room manifolds, this variant is frequently held as a spare on site and replaced most often during routine sensor audits.