BASO K15DA-48 Thermocouple

The BASO K15DA-48 Thermocouple is a high-performance standing pilot ignition system component designed for stable flame supervision in commercial and residential HVACR applications. Operating with an open circuit voltage range of 20-28 mV, this 48-inch flame sensor ensures precise millivolt output to the gas safety valve, preventing fuel release in the event of pilot outage. Engineered for compatibility, the K15DA-48 is a direct replacement for the K15DA-48H, featuring a standard 11/32-32 male nut connector that fits most BASO pilot burners and thermoelectric valves. With a maximum hot junction temperature rating of 1500°F (816°C), this gas furnace thermocouple provides rugged durability in high-heat environments like boilers, furnaces, and water heaters. Technicians can rely on its consistent millivolt signal for maintaining pilot burner integrity across various gas-fired equipment platforms.

• Universal Compatibility: Interchanges with standard thread-in pilot burners and is identical to the K15DA-48H model.
• High Temperature Flux: Rated for hot junction temperatures up to 1500°F to resist premature burnout in industrial applications.
• Precise Signal: Delivers a consistent 20-28 mV open circuit range to ensure reliable safety valve hold-in.
• Extended Reach: 48-inch length provides flexibility for remote installations and complex internal routing.
• Rugged Build: Constructed with a durable outer sheath to protect the internal elements from corrosive combustion byproducts.

Is the K15DA-48 compatible with other brands?
Yes, while designed for BASO hardware, the 11/32-32 male nut and standard thread-in tip allow it to replace many Johnson Controls and competitive 48-inch thermocouples in standing pilot systems.

What causes a low millivolt reading on this unit?
Common issues include poor heat transfer at the hot junction, a loose connection at the safety valve, or internal resistance due to sharp bends in the lead. Ensure the tip is fully immersed in the pilot flame.

Can I use this for electronic ignition systems?
No, this part is specifically designed for thermoelectric standing pilot systems. Direct spark or hot surface ignition systems typically require flame rods or different sensing technology.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.