Furnace Thermocouple Assemblies — K-Type

Replacement K-type thermocouple assemblies for Vulcan, Vulcan Series-II, Vulcan 1750, and Radiance MLS multistage furnaces. Voltage-independent: same probe across 110V / 220V / 230V.

Manufacturer Features

K-type junction (chromel/alumel) — OEM specification
Voltage-independent — same part covers 110V, 220V, 230V furnaces
9493342 fits Vulcan 130 and 550 series (A-, D-, 3-) and works in 1750 chamber
9491747 longer K-type assembly designed for the larger Vulcan 1750 muffle
Also fits NEY Miniglaze glazing oven
335471 thermocouple fits Radiance MLS Multistage and Jelrus Infinity L30 / M30
Replace when 'open thermocouple' alarm or rapid-beep at power-up
Re-calibrate via Tcal panel value at normal operating temperature after install

Specifications

Junction type: K-type (chromel/alumel)
9493342 compatibility: Vulcan A-130, A-550, D-130, D-550, 3-130, 3-550 (works in 1750 chamber too)
9491747 compatibility: Vulcan A-1750, 3-1750, D-1750 (longer probe for the larger muffle)
335471 compatibility: Radiance MLS Multistage; Jelrus Infinity L30 / M30 burnout
Also fits: NEY Miniglaze glazing oven
Voltage: Voltage-independent across 110V, 220V, 230V
Calibration: Re-calibrate via panel Tcal value after install
Replacement triggers: Open-thermocouple alarm; rapid beep at power-up; offset >15 °C from external probe
Documentation source: Dentsply Sirona Vulcan 3-Series, D-Series, and multistage furnace manuals